Question 1 choose the correct answer

1 ………………is one of the basic needs of the plant.

(a) Soil (b) Air (c) Oxygen

2 The………………transports water from root to all parts of the plant

(a) stem (b) flowers (c) seeds

3 The plant makes its food, which is……………., through the process of
photosynthesis
(a) sugar (b) protein (c) seeds

4 The……………… absorbs water and salt from the soil

(a) stem (b) leaves (c) root

6 The………. delivers water and salts from the root to the plant leaves
(a) stem (b) leaves (c) root

7 The process of photosynthesis occurs in …………

(a) stem (b) flowers (c) leaves

8 The needs of plant and animal are similar in all of the following except…..
water
Air
method of obtaining food

9 A component within a plant that absorbs sunlight during photosynthesis....

(a) Green chlorophyll (b) Stomata (c) Xylem

10 Air passes through small openings in the leaves of the plant called
(a) stomata (b) Green chlorophyll (c) xylem

2
11 There are several types of leaves, including wide flat leaves such as the
leaves of ................
banana tree (b) pine tree (c) grapes

12 The potato plant is known to have a.......stem that extends underground

(a) Tuberous (b) Extension (c) Limber

13 Root hairs help in…………the amount of water that the plant can take
from the soil.
(a) Increasing (b) decreasing (c) no change

14 Phloem vessels carry glucose down from……….to the rest of the plant
parts
(a) leaves (b) stems (c) roots

15 During photosynthesis, plants release………..into the air so that we can

breathe
(a) carbon dioxide (b) oxygen (c) sugar

16 Xylem vessels are tubes that allow water to move .............. from the roots
to other parts of the plant
(a) up (b) down (c) in its place

17 The human transportation system is called. ....... system.

(a) digestive (b) circulatory (c) respiratory

18 The plant absorbs …………. gas during the process of photosynthesis

(a) oxygen (b) carbon dioxide (c) nitrogen

19 The is considered as an organ of the circulatory system

(a) skin (b) heart (c) brain

3
20 The heart consists of................. chambers
three (b) four (c) five

21 Glucose moves inside the plant through the phloem vessels to......
(a) up (b) down (c) up and down

22 Blood rich in oxygen moves inside the body from the heart to the body's
organs through....
(a) arteries (b) veins (c) phloem

23 In the process of photosynthesis, light energy is converted into…….energy

(a) gravity (b) thermal (c) chemical

24 The process of transporting seeds from one place to another is

called…….............
(a) seed germination (b) transpiration (c) seed dispersal

25 Blood rich in carbon dioxide returns to the heart through……….

veins (b) arteries (c) phloem
Unit1 o
26 The……………. organisms increase soil fertility 1.2
(a) producers (b) carnivore (c) herbivore (d) decomposers

27 All of the following are considered as producer organisms except ………

(a) carrot (b) rabbit (c) grass (d) cactus

28 Which of the following is a correct example of a food chain?

(a) Mouse - Snake - Grass (b) Rabbit – carrots - bacteria
(c) Grass - Deer - Bacteria (d) Hawk - fish - algae

4
29 Which of the following organisms could end the food chain?
Mouse and snake (b) Rabbit and carrots
(c) Grass and cactus. (d) Bacteria and fungi

30 Among the non-living components of the ecosystem

Animal (b) Plant (c) Soil

31 Among the organisms that produce food

(a) Animal (b) Plant (c) Soil

32 Fungi are found in the………….of the food chain

(a) beginning (b) middle (c) end

33 The ……….. obtains energy directly from the sun

(a) plant (b) human (c) animal

34
Which of the following represents a correct food chain?
Hawk - Grass - Bacteria - Rabbit - Snake.
Grass Rabbit - Bacteria - Hawk - Snake
Grass - Rabbit - Snake - Hawk - Bacteria

35 All of the following are considered as consumers’ organisms except…….

owl (b) rabbit (c) algae

36 Energy passes from the sun to the consumers’ organisms through…….

organisms
predators (b) producer (c) decomposers

37 Fungi and bacteria are found in the……….of the food chain

(a) beginning (b) middle (c) end

38 The food chain starts with the source of energy which is……………
(a) oxygen (b) sun (c) Moon

5
39 The food chain begins with…………..
decomposers (b) producers (c) consumers

40 plant obtains energy directly from the…………

(a) moon (b) animal (c) sun

41 The organisms are responsible for returning the organic elements to the
soil………………….
producers (b) consumers (c) decomposers

42 The energy passes between living organisms through ………………..

ecosystem (b) food web (c) air

43 Which of the following are decomposers?

(a) Bacteria (b) Hawk (c) Grass Unit1
Concept 1.3

44 The ……………. is Considered one of the cause of disruption in the marine

ecosystem
(a) Habitat restoration (b) Establishing marine reserves
(c) Over fishing (d) Recycling plastic materials

45 All of the following organisms are affected by plastic materials in the water
except ……………………….
(a) Seabirds (b) Algae
(c) Whales (d) Sea turtle

46 The .................. Cause the death of marine organisms when feeding on them
(a) Fish (b) Plants
(c) Algae (d) Plastic materials

47 The phenomenon of coral bleaching occurs as a result of ........................ the

temperature of water
(a) Increasing (b) Moderating
(c) Decreasing (d) Stabilizing

6
48 The ……….....………. Is created to preserve marine organisms in their
ecosystem
(a) Desert (b) Aquarium (c) Protected marine environment

49 All of the following cause disruption to food webs in the desert environment
except ………
(a) drought (b) Light rain (c) pollution

50 The drying up of lakes leads to .................. The ecosystem

(a) Stability (b) Imbalance (c) Strength

51 When the grass in the ecosystem decrease , the number of rabbits………

(a) Increases (b) In not affected (c) Decrease

52 Which of the following organisms begins the marine ecosystem ?

(a) Algae (b) Molluscs (c) Shark

53 The cactus is considered a ......................... organism in the desert foot web

(a) Producer (b) Consumer (c) decomposer

54 Locusts feed on grass, so locusts are considered consumer organisms of the

……… class
(a) First (b) Second (c) Third

55 The .............................. are considered a home to many fish

(a) Microorganisms (b) Marine algae
(c) Sea turtles (d) Coral reefs

56 The …………… are considered one of the human activities that negatively
affect the marine environment
(a) Loss of algae
(b) Climate change
(c) Throwing plastic materials into the seas
(d) Recycling plastic

7
57 The food chain in the oceans begins with………………..
(a) Small fish (b) Microorganisms
(c) Sea turtle (d) Starfish

58 Overfishing lead to .......................... The number of marine organisms

(a) Increase (b) Growth (c) Decrease

59 All the following happen when the temperature of water rises in the oceans
except ………
(a) Increase in the number
(b) Coral get rid of algae
(c) Coral bleaching

60 The microorganisms need.................. water to survive

(a) Moderate (b) Cold
(c) Hot (d) warm

61 The ………………. Is considered one of the causes of disruption in the marine

environment web
(a) Overfishing
(b) Habitat restoration
(c) Building a marine reserves
(d) Recycling of plastic materials

62 ......................is an area in the ocean where the small pieces of coral are nurtured
(a) Population (b) Nursery
(c) garden (d) Protectorate

63 Marine microorganisms are ……………

(a) Producer (b) Consumer (c) Decomposer

64 When the water is warm , the coral turns….............................. Color

(a) Red (b) Black
(c) Green (d) White

Unit2
Concept 2.1

8
65 The particles move more freely in the matter...........
(a) liquid (b) gaseous
(c) frozen (d) solid

66 Which of the following substances consists of particles that are closely

connected to each other?
(a) Helium gas (b) Wood
(c) Water vapor. (d) Cooking oil.

67 The matter consists of a group of .........

(a) organs (b) devices
(c) gases (d) particles

68 The atmospheric air is considered a .......... matter.

(a) solid (b) frozen
(c) liquid (d) gases

69 Which of the following is not considered a matter?

(a) Wood (b) Air (c) light

70 The amount of space that a matter takes up is called ……………..

(a) Volume (b) Mass
(c) Area (d) Weight

71 Particles of........................... Vibrate around their place

(a) glass (b) air
(c) Oxygen (d) Water

72 One of the substance that doesn’t take the shape of its container is .........
(a) Oil (b) Coin
(c) Oxygen (d) water

73 Matter can found in ........................... states

(a) 2 (b) 3
(c) 6 (d) 7

9
74 Pen and ruler are examples of............. matter
(a) solid (b) liquid
(c) gaseous (d) all of the previous

75 The particles of matter are very close to each other in the state of...
(a) oxygen (b) water
(c) oil (d) iron

76 Water is found in nature in .......................... states

(a) three (b) four
(c) five (d) six

77 Everything that has mass and occupies space is called………..

(a) volume (b) state
(c) matter (d) mass

78 All of the following are matter except ......

(a) air (b) light
(c) juice (d) tree

79 The distances between the particles of a gaseous matter are…….the distances

between the particles of a liquid matter
(a) double (b) greater than
(c) equal to (d) smaller than

80 The……. is considered a similar copy to the real thing to illustrate its shape or
the way of its work
(a) Energy (b) Particle
(c) Model (d) matter

81 The .............. matter has a fixed volume and a variable shape

(a) solid (b) liquid
(c) frozen (d) gaseous

10
82 Which of the following matters consists of particles that are interconnected and
very close together?
(a) edible oil (b) water vapor
(c) helium (d) wood

83 The movement of water particles is slower than the movement of……….

(a) oil (b) car
(c) hydrogen (d) juice

84 The matter consists of……………..

(a) sugars (b) proteins
(c) particles (d) d-cells

85 The particles of matter come very close to each other in the case of
(a) oil (b) oxygen
(c) iron (d) water

86 Steam rising from food is an example of a............... state

(a) solid (b) liquid
(c) gaseous (d) frozen

87 Which of the following substances can be poured……….

(a) salt (b) water vapor
(c) milk (d) air

88 The shape of …………… is fixed as it is a .................. Matter

(a) Gold – liquid (b) Water – liquid
(c) Air – gas (d) Gold – solid

89 Oil takes the ...................... Of its container

(a) Volume (b) Shape
(c) Color (d) Mass

11
90 By changing the ……………. Of a matter, its state may change
(a) Mass (b) Volume
(c) Color (d) Temperature

91 To examine the structure of tiny particles of a matter, we can use a special type
of ……………
(a) Microscope (b) Balances
(c) Thermometer (d) rulers

92 The movement of particles of water is slower than that of ………….

(a) Wood (b) Plastic
(c) Air (d) Gold

93 The model of earth shows how much of its surface is covered with……
(a) Gasoline (b) Water
(c) Milk (d) Animals

94 We can see all the planets of the …. System including earth by using a model
(a) Solar (b) Digestive
(c) Respiratory (d) Muscular

95 Particles of........................ are organized and have a regular pattern

(a) Solids only (b) Gases only
(c) Solids and liquid (d) Liquids and gases
Unit2
96 We use the………unit to measure the mass of the body Concept 2.2
(a) liter (b) kilogram
(c) meter (d) cubic centimeter

97 All of the following are chemical properties of matter except ………

(a) burn (b) combustion
(c) color (d) rust

98 We use.................. to measure temperature

(a) ruler (b) thermometer
(c) measuring cup (d) balance

12
99 The amount of the matter that the body contained is known as…………..
(a) volume (b) temperature
(c) mass (d) length

100 A tape measure is used to measure………….

(a) temperature (b) volume
(c) weight (d) length

101 The ..................... is known as the space that occupied by a body.

(a) mass (b) volume
(c) weight (d) length

102 We use.................. to measure the mass of a book

(a) common balance (b) thermometer
(c) measuring cup (d) ruler

103 The .................. is considered one of the chemical properties of matter.

(a) color of apples (b) smell of vinegar
(c) burning of the paper (d) color of gold

104 5 liters=. ...... cm3

(a) 0.5 (b) 50
(c) 500 (d) 5000

105 .............................. is used to make the medical glasses

(a) Helium (b) Glass
(c) Rubber (d) Iron

106 . ..... is used to measure the volume of a matter.

(a) Common balance (b) Measuring tape
(c) Measuring cup (d) Thermometer

107 All of the following describe the physical properties of matter except
(a) Texture (b) Taste
(c) Iron rust (d) Color

13
108 All of the following are units of mass measurement except
(a) tons (b) grams
(c) liters (d) kilograms

109 . ......... is used in making car tires

(a) Copper (b) Helium
(c) Rubber (d) Glass

1W
10e use .................to measure the mass of a book.
(a) common balance (b) measuring tape
(c) measuring cup (d) thermometer

111 ............... floats above the surface of the water

(a) Iron (b) Aluminum
(c) Wood (d) Copper

112 Which of the following properties of matter cannot be measured?

(a) Length (b) Mass
(c) Taste (d) Volume

113 ………. is considered one of the matters that are attracted to magnets.
(a) Plastic (b) Wood
(c) Iron (d) Cork
Unit2
Concept 2.3
114 Liquid chocolate can be returned to its solid state by……… ……..
(a) heating (b) cooling
(c) evaporation (d) condensation

115 The speed of particle movement increases in the process of…….

(a) freezing (b) melting
(c) condensation (d) cooling

116 The components of a mixture of sand and water are separated by..................
(a) filtration (b) evaporation
(c) cooling (d) filtration and cooling

14
117 Condensation is the change of matter from the …….state to the liquid state
(a) solid (b) gaseous
(c) physical (d) chemical

118 The mass of the ice after melting is the mass of the ice before melting.
(a) double (b) greater than
(c) equal to (d) less than

119 When water is placed in the freezer, it turns into ice as a result of
(a) melting (b) freezing
(c) filtration (d) evaporation

120 All of the following are ways of separating mixture except

(a) stirring (b) filtrations
(c) evaporation (d) stirring and filtrations

121 The process of freezing is the reverse process of

(a) boiling (b) melting
(c) condensation (d) evaporation

122 Examples of physical process include

(a) iron rusting (b) wood burning
(c) paper burning (d) making fruit salad

123 Both of ................ processes need increasing in temperature

(a) evaporation and freezing (b) melting and freezing
(c) melting and evaporation (d) freezing and condensation

124 Which of the following changes take place in this activity?........

(a) The hot water changes from gas to solid
(c) The hot water changes from liquid to solid
(b) The ice cubes change from solid to liquid
(d) The ice cubes change from solid to gas

15
125 Cutting a paper into small pieces causes a change in its…….
(a) shape only (b) size only.
(c) shape and color. (d) shape and size

126 All the following can pass through filters during desalination of water, except
(a) salts (b) minerals
(c) seaweed (d) gases

127 On decreasing the temperature of water vapor, it

(a) freezes (b) condenses
(c) melts (d) evaporates

128 The change produced as a result of coloring a paper is the same change
produced from……………
(a) rusting of iron (b) mixing baking soda with vinegar
(c) mixing iodine with starch (d) melting of wax

129 When the water is heated, its particles………..

(a) move faster (b) move slower
(c) move with the same speed (d) don't move

130 Exposing an amount of salty water to sunlight for a long time causes………….
(a) freezing of water (b) formation of a new substance
(c) a chemical change to water (d) a physical change to water

131 Desalination process means that we remove……. from water to drink it.
(a) sugar (b) salt
(c) oxygen gas (d) hydrogen gas

132 The of iodine will not change after mixing it with starch……………
(a) amass only (b) color only
(c) color and mass (d) properties and mass

16
 Question 2 Put (true) or (false) answers Unit1
Concept 1.1

1) Roots absorb light from sun ( )

Plant and human does not depend on themselves to obtain

2) ( )
food.
3) Soil is considered a basic need for plant growth ( )

4) The plant absorbs water from the soil through the root ( )

5) The plant uses natural resources to grow and flourish ( )

6) Photosynthesis occurs in plant seeds ( )

7) Chlorophyll gives the plant its distinctive green color ( )

The xylem carry glucose from the leaves to the rest of the
8) ( )
plant
The plant does not need sunlight in the process of
9) ( )
photosynthesis.
The arteries and veins in the human body are similar to
10) the vessels of xylem and phloem in transporting water ( )

and food.
Glucose provides the plant with the energy that needed
11) ( )
for growth and survival
12) Blood moves in the arteries and veins in two directions ( )

13) The lion is a consumer organism. Unit1 ( )

Concept 1.2
14) Humans are the main source of energy on Earth ( )
In the ecosystem, energy is transferred from ism to
15) ( )
another
16) The food chain begins with consumers ( )

An ecosystem is several interconnected of the food chains

17) ( )
with each other
The snake is an example of a predator and prey in some
18) ( )
food chains
Unit1
Concept 1.3
17
 19) Habitat loss is one of the most important causes of extinction ( )

20) The ecosystem is affected when decomposers disappear ( )

21) The food chain in the desert environment begins with algae ( )

The octopus is an example of productive organism in the

22) ( )
marine ecosystem
23) Heavy rain leads to disruption in the desert ecosystem ( )

Overfishing is one of the human activities that affects the

24) ( )
marine ecosystem
It producers were removed from an ecosystem the primary
25) ( )
consumers will need to move away
Microorganisms are producers that small fish feed on to get
26) ( )
energy
Energy transfers when a prey gives energy to the predator
27) ( )
which feeds on it
Healthy habitats provide living organisms with clean air ,
28) ( )
healthy food and water
29) Human activities impact the nonliving factors in an ecosystem ( )

When the temperature of seawater decreases, coral reefs

30) ( )
receive more algae
Coral bleaching occurs as a result of throwing plastic in
31) ( )
seawater
Removing plants negatively affects consumers in an
32) ( )
ecosystem
It is better to keep natural habitat back to its healthy
33) ( )
condition
Citizens must share in returning a habitat back to its healthy
34) ( )
condition
Nursery is the natural habitat in the sea , in which scientists
35) ( )
take care of corals until they grow
People can recycle plastic products instead of throwing term
36) ( )
in the sea

18
 Microorganisms that live in water increase when the water
( )
37) becomes warmer
If the climate change is suitable , the population of a species
( )
38) will decrease

Unit2
39 Sound is a form of energy Concept 2.1
( )

40 Ice turns into a liquid by cooling ( )

41 Gaseous matter does not occupy space ( )

Milk has a fixed shape whatever the shape of the container is

42 ( )
different

43 the same substance can exist in nature in more than one state. ( )

44 Ice is considered a solid state of water ( )

45 When we press on a balloon, its volume increases ( )

46 Models help understand how things work ( )

47 Particles of solid matter spread very quickly ( )

48 Germs can be seen with the naked eye ( )

49 Solids, liquids, and gases have a specific shape in common ( )

50 A gaseous matter has a fixed volume and an unstable shape ( )

After desalination process, the water that is returned back to ( )

51 Unit2
oceans is useful to marine life
Concept 2.2
52 The shape of houses varies from one environment to another. ( )

53 A ruler is used to measure the mass of objects. ( )

The texture of the fabric is one of the chemical properties of

54 ( )
the matter.

19
 55 Iron rust is considered a physical change in the matter. ( )

Temperature expresses the speed of particles movement of

56 ( )
matter.
It is possible to distinguish between iron and gold using the
57 ( )
sense of smell.
58 Balloons are filled with helium gas ( )

59 Wood is a good conductor of electricity ( )

60 A measuring cup is used to measure temperature ( )

61 The mass of matter changes from one state to another ( )

62 Shape and volume are physical properties of matter. ( )

The roof of a desert house is similar to the roof of a house in

63 ( )
a tropical forest
Unit2
64 Heat is a form of matter Concept 2.3
( )

65 Melting is the transformation of ice into water ( )

66 The mixture consists of only one substance ( )

67 Changing temperature affects the shape and mass of matter ( )

68 When a liquid matter is heated, it turns into a solid state ( )

Separating mixtures by evaporation requires raising the

69 ( )
temperature
70 Dehydration means that human body loses water. ( )

71 The change of water into water vapor is a physical change ( )

20
 Question 3 Complete the following sentences Unit1
Concept 1.1
1- The ………… and water are considered basic needs for the growth
and survival of living organisms

2- The ………… help the plant get water from the soil

3- The plant gets. ………… and ………… from the soil

4- The plant needs …………water and sunlight to carry out of

photosynthesis process.
5- Light energy in the plant is converted into…………energy in
photosynthesis process

6- The energy source of plant is ..................sugar

7- There are three types of blood vessels in the human circulatory

system …………, ………… and …………
8- The transport system in plants is similar to the .................. system in
humans.
9- The ………… gas is produced through the process of photosynthesis
and humans used it for breathing.
10- If the appropriate conditions are available for the seeds, they grow
and form …………

11- Plant cells depend on ………… as a source of energy and growth

12- The process of ………… is the production of new individuals of

the same special

13- Flowers in plants perform the function of. …………

21
 14- Coconut seeds are transmitted by. …………

Unit1
Concept 1.2
15- An animal that feeds on another animal is called …………

16- Energy is transferred from …………organisms to consuming

organisms

17- An animal that feeds on another animal is called. ……………………

18- The main source of energy on the surface of the Earth is …………..

19- The ecosystem consists of ………… and non-living things

20- The feed on the remains of dead organisms. …………

21- ………… is a consumer organism.

22- Energy is transferred from to consumers through the food chain.

…………
23- The organisms responsible for returning organic elements to the
soil are the …………

24- Light seeds are spread by …………

25- The food chain begins with a ................. organism

26- Fish and birds are .................. organisms

27- The food chain ends with organisms. …………

22
 28- An animal that feeds on another animal is called...………………

29- When a fox feeds on a rabbit, the rabbit is called …………….

30- The interconnection of a group of food chains is known.…………

Unit1
31- Frog eats an insect that feeds on plants, this means that frog is a Concept 1.3
………… consumers.
32- Some marine animals can not differ between food and plastic as
………… …………

33- The zooplankton feed on ...................in the food web

34- In a marine habitat micro plastic could be ingested by the …………

and this process harms it.

35- Secondary consumers feed on …………

36- If the climate change is suitable, the population of the species will
…………
37- The human activity that directly decrease the marine population is
………… …………
38- Plastic products get broken into small particles by the effect of
…………

39- The absence of producers leads to the ......................of consumers

40- Energy is passes from .................to the locust in the desert environment

41- When producers organisms disappear from an ecosystem, the …………

organisms die.

23
 42- The island of Palau needs to establish .................. protect its waters from
pollution

43- Loss of habitat is one of the most important reasons for …………

44- Seabirds depend on.................. for their food

45- Marine microorganisms move to a new habitat when there is a change

in …………

46- Algae are considered .................. organisms in the marine environment

47- ................. causes plastic materials to break down into small particles

48- Coral reefs turned to white due to ................... water temperature

49- Marine algae are considered................... , organisms

50- Particles of .................. matter spread very quickly Unit2

Concept 2.1

51- The.................... matter can be poured but the solid matter cannot be
poured.

52- The pen is an example of a................... matter

53- The................... state of water changes when it is heated or cooled.

54- Matter consists of small units called …………

55- Gases have an ...................shape and an unstable volume

24
 56- The.................. matter has a fixed shape and a fixed volume

57- The shape of the.................. matter and its volume are variable

58- Matter can exist in ................ states.

59- Matter can be poured in the................ state

60- Sound is considered a form of.................

61- Everything that has mass and occupies space is called.........

62- Water can exist in a solid state in the form of...................

63- the particles of matter are very close together in.................... matter.

64- States of matter are ............................and liquid

65- Iron and gold are examples of .................. state of matter.

66- The state of an ice cube is ..................while the state of the air we breathe
is …..…………

67- Any matter takes up space means that it has ………………

68- In the................... matter, the volume and shape don't change

69- Water is a matter in ................. state, while water vapor is a matter

in ........................state

25
 70- Matter that takes the shape of its container, but its volume cannot be
changed is………………

71- We can measure the ........................of a pen by using a ruler

72- Particles of .................. matter are very close to each other

73- Any matter is made up of tiny ...................... that we cannot see with our
eyes.
74- The shape of ..................matter doesn't change unless something is
happening to change it

75- Particles of ................... matter have a lot of energy and spaces

76- When an ice cube is exposed to the Sun, the speed of movement of its
particles will.……………
77- We can use ping pong balls to describe the
movement of ................ of the three states of matter Unit2
Concept 2.2

78- The ............ of matter is measured by a measuring cup

79- The length of the classroom can be measured by cubic .......... unit

80- 3 kilograms= ..................... grams

81- Iron rust is an example of........................... a properties change of a matter

82- Color, taste and smell are the............................. properties of a matter

83- ......................is used to measure the volume of a matter

26
 84- ......................gas is used to fill balloons

85...................... is used to make the electrical wires because it is a good

conductor of electricity.

86...................... is used to make cooking utensils

87-The roof of the house is sloping in places with...................... weather

88-The roof of the house is flat in places with ...................... weather

89- Thermal conduction is one of the ...................... properties of the matter.

Unit2
90- Water turns into steam as a result of....................... thermal energy Concept 2.3

91...................... consists of two or more substances combined chemically

92-The movement of matter particles increases when the temperature of the

matter …………….
93-The change of matter from the gaseous state to the liquid state is called
…………….

94-A mixture of a solid dissolved in water is separated by …………….

95- If we mix an amount of oil with an amount of vinegar,

the ......................of both of them will not change

96- Ice is turned into water by ....................... process.

97- When a matter is .................. its particles speed will increase.

27
 Unit2
Concept 2.3

98- Melting and evaporation take place by …………

99- When ice gain .................. energy, its temperature increases and changes
into water

100- We can change water vapor into water by using ………… will process

101- When ice melts and changed into water, its .................. will increase

102- We can separate sand from sand and water mixture by using
…………process
103- In salty water, the …………and ................. of salt and water don't
change after mixing
104- Matter can be changed from one state to another by changing its
…………
105- The mass of mixed substances will not be changed during formation of
… ............ but their properties will be changed.

106- Making salad doesn't produce ................. substances

107- Making yoghurt from milk is a ..................change

Question 4 Write the scientific term of each of the followings Unit1

Concept 1.1

1- Small openings in the leaves of the plant through which (…………..)

air passes
2- Vessels that transport water and nutrients from the roots (…………..)
to the parts of the plant.

28
3- Vessels that transport blood rich in carbon dioxide and a (… ............. )
little oxygen and nutrients from parts of the body to the
heart
4- A group of tubes that transport important nutrients in (…………..)
one direction between parts of the plant

5- They are small, dark parts located in the middle of the (…………..)
flower
6-The main source of energy on Earth (… ............. )
7- A process in which the plant obtains energy. (… ............. )
8- A system consisting of living organisms and non-living (…………..)
things
9- Stems that extend horizontally on the surface of the earth (…………..)
and help in the formation of new plants such as the
strawberry plant
10- A process that occurs inside the leaves of the plant to (…………..)
make its food

11- Thick and solid stems such as the roots of trees and (… ............. )
shrubs Unit1
Concept 1.2,1.3
12- The path of energy flow from one organism to another. (…………..)
13- A group of different food chains. (… ............. )

14- Organisms that produce their own food (… ............. )

15- Flying living organisms that build their nests on the top of (…………..)
mountain cliffs and dive deeply into the sea to eat.
16- A human activity that leads to decreasing the number of fish (…………..)
and affecting many marine food webs

17- They are consumers that exist at the top of food chains (… ............. )
 18- It is the number of organisms of one type of species living in (…………..)
an area

19- The process of returning a habitat back to its natural state (… ............. )

20- The corals turn completely into white (… ............. )

21- An area in the ocean where small pieces of coral are cared (… ............. )

22- Small pieces of plastic materials are a grain of rice sized (… ............. )
23- The disappearance or death one of a species of marine (…………..)
organisms
Unit2
24- Anything that has mass and volume Concept 2.1 (…………..)

25- The state of water after its boiling (…………..)

26- The state of matter that has definite volume and shape (…………..)
27- The state of matter that is characterized by having a definite (…………..)
volume but it doesn't have a definite shape
28- Substances that take the shape and the volume of their (…………..)
containers
29- The state of matter that has a lot of spaces between its (…………..)
particles

30- The tool used to measure the length of a wall. (…………..)

31- The tool used to measure the temperature of some matter (…………..)

32- The state of water after its heating for a high temperature (…………..)
33- A device used to examine one tiny particle such as a blood (…………..)
cell
34- A device used to examine objects that are too small to be seen (…………..)
with the naked eye

30
35- A model of the whole Earth that is made in the shape of a (…………..)
large ball
36- A copy that is similar to a real thing which we cannot (…………..)
observe it with our eyes

37- The properties that can observed using the five senses. (… ............. )
38- The ability of a material to transfer electricity and heat (…………..)
through it

39- A non-toxic material used to fill air balloons. …………

(…………..)
40- Two or more substances mix and can be easily separated (…………..)
again

41- The process of changing a matter from a gaseous state to a (…………..)

liquid state.
42- The process of changing a matter from a solid state to a (…………..)
liquid state by raising the temperature

43- A matter that is formed when two or more materials (…………..)

combine chemically

44- The process of removing salt from salt water (… ............. )

45- It is the process by which the particles of matter gain energy (…………..)
and changes from solid to liquid state
46- It is the substance that consists of more than one matter (…………..)
which don't have any chemical change in their properties

47- The process which can be used to remove any large materials (…………..)
from sea and ocean water.
48- They are changes in matter which is usually reversible and (…………..
don't affect its structure
 Question 5 Give reason Unit1
Concept 1.1
1. Sugar is not a basic need for plants
…………………………………………………………………………………
2. The little squirrel needs food
…………………………………………………………………………………
3. The human body needs water and food daily
…………………………………………………………………………………
4. Soil is not one of the basic needs of the plant
…………………………………………………………………………………
5. The presence of root hairs in the plant root
…………………………………………………………………………………
6. The plant does not grow well in a paper towel
…………………………………………………………………………………
7. Plants need sunlight
…………………………………………………………………………………
8. Oxygen gas and water vapor are considered byproducts of the
photosynthesis process for plants
…………………………………………………………………………………
9. Dandelion seeds spread in the presence of wind.
…………………………………………………………………………………
10. Trees are considered as producers Unit1
…………………………………………………………………………… …… Concept 1.2

11. The food web is a system of energy flow

…………………………………………………………………………………
12. The presence of root hairs in the plant root
…………………………………………………………………………………
13. The plant stem has many different shapes, mention them
…………………………………………………………………………………
14. Soil is not one of the basic needs of plants
…………………………………………………………………………………

32
15. Plants need sunlight.
…………………………………………………………………………… ……
Unit1
16. Coral reefs are important for marine organisms and human Concept 1.3

…………………………………………………………………………………
17. Importance of healthy habitat for all living organisms
…………………………………………………………………………………
18. Gentle rains cause a healthy ecosystem
…………………………………………………………………………………
19. Plastics are so harmful for marine ecosystem
…………………………………………………………………………………
20. Microplastics have a bad effect on corals
…………………………………………………………………………………
21. The occurrence of the phenomenon of coral bleach
…………………………………………………………………………………
22. The food web is considered a system for energy flow
…………………………………………………………………………………
23. Sea turtles eat a lot of plastic materials
…………………………………………………………………………………
24. It is better to recycle plastic waste materials than throwing them in water
…………………………………………………………………………………
25. Oil is matter Unit2
…………………………………………………………………………… …… Concept 2.1

26. Gasoline is a liquid matter

…………………………………………………………………………………
27. Water vapor has no definite shape or volume
…………………………………………………………………………………
28. Wood is solid matter
…………………………………………………………………………………
29. Scientists make models of germs
…………………………………………………………………………………
30. Particles of a piece of iron are very close to each other
…………………………………………………………………………………
31. Sometimes we need to use an electron microscope
…………………………………………………………………………………
 32. Oil takes different shapes when it is placed in some containers that have
different shapes
…………………………………………………………………………………
33. Oxygen has no definite shape or volume
…………………………………………………………………………………
34. Sweet taste of sugar doesn't change after mixing an amount of Unit2
Concept 2.2,2.3
sugar with water

…………………………………………………………………………………
35. Both of melting and freezing processes are considered as physical changes.
…………………………………………………………………………………
36. Formation of a layer with reddish color on the surface of a wet iron wire
after a period of time
…………………………………………………………………………………
37. Wood is not used to make electrical wires
…………………………………………………………………………………
38. Glass is used to make electric lamps.
…………………………………………………………………………………
39. Cookware handles are made of plastic not metal
…………………………………………………………………………………
40. Melting is a physical change.
…………………………………………………………………………………
41. The Earth's atmosphere is a mixture
…………………………………………………………………………………
42. Heat is not a matter.
…………………………………………………………………………………
Question 6 What happens Unit1
Concept 1.1
1) The plant does not receive the necessary care
…………………………………………………………………………………
2) The plant does not have natural resources.
…………………………………………………………………………………
3) The plant does not have roots
…………………………………………………………………………………

34
 4) The green plant is placed in a dark place for a week.
…………………………………………………………………………………
5) The plant obtains natural resources
…………………………………………………………………………………
6) Plants disappear from the surface of the earth
…………………………………………………………………………………
7) A green plant is placed in a dark place for a period of time
…………………………………………………………………………………
8) The roots disappear from the plant.
…………………………………………………………………………………
9) When a green plant is placed in a dark place for a period of time
…………………………………………………………………………………
10) The process of photosynthesis
…………………………………………………………………………………
11) If sunlight does not reach the Earth.
…………………………………………………………………………………
12) A seed of a plant fall on a suitable environment
…………………………………………………………………………………
13) If the decomposers disappear Unit1

… .................................................................................................................……
Concept 1.2

14) For plant when the sun is absent for a long time
…………………………………………………………………………………
15) Leaving the plant without water for long periods
…………………………………………………………………………………
16) The seed of a plant fall on an unsuitable environment
…………………………………………………………………………………
17) The coral reefs when the seawater temperature rises.
…………………………………………………………………………………
18) The number of secondary consumer decrease in an ecosystem Unit1

…................................................................................................................ Concept
…… 1.3
19) Bleaching of coral reefs
…………………………………………………………………………………
20) Seawater becomes warm (Concerning corals and microorganisms)
…………………………………………………………………………………

35
21) he food web in the ecosystem may be destroyed
…………………………………………………………………………………
22) When grass disappears from the desert ecosystem
…………………………………………………………………………………
23) When the amount of plastic materials in the marine environment increases
…………………………………………………………………………………
24) If living organisms cannot adapt t to climate changes
…………………………………………………………………………………
25) When the water temperature increases for microorganisms
…………………………………………………………………………………
Unit2
26) The state of water after it is heated in the kettle for few minutes Concept 2.1

…………………………………………………………………………..……
27) The shape of water if we put three equal amounts of water in three different
containers.
…………………………………………………………………………………
28) The volume of a coin if we move it from a cup to another cup.
…………………………………………………………………………………
29) The shape of water if it changes into ice
…………………………………………………………………………………
30) The speed of particles of an ice cube when it is exposed to the Sun
…………………………………………………………………………………
31) The size of a balloon when you blow it up
…………………………………………………………………………………
32) The speed of particles of liquid when it changes into gas
…………………………………………………………………………………
33) The arrangement of particles of water after its freezing
…………………………………………………………………………………
34) The distance between particles will decrease and the force of attraction
increases and change from liquid state to solid state
…………………………………………………………………………………
35) The mass and properties of sugar when it is mixed with an Unit2
Concept 2.2,2.3
amount of flour.

…………………………………………………………………………………
36) You leave an amount of salty water exposed to sunlight for several days
…………………………………………………………………………………
 37) If the density of the matter is less than the density of the liquid.
…………………………………………………………………………………
38) If the density of the substance is greater than the density of the liquid
…………………………………………………………………………………
39) If the particles of the matter are interconnected and close in relation to
their density.
…………………………………………………………………………………
40) When the water is cooled to a temperature below zero degrees Celsius.
…………………………………………………………………………………
41) When placing a piece of ice in the sun for a long period of time
…………………………………………………………………………………
42) To the mass of a matter when heated or cooled.
…………………………………………………………………………………
Question 7 Answer the following

A- Form a food chain by using the following organisms

1. Rat → Grass → Hawk → Snake
o …………………………………………………………………………….
2. Hawk → Snake → Insect → Grass → Frog
o …………………………………………………………………………….
3. Coral → Zooplankton → Shark → Algae → Parrotfish → shark
o …………………………………………………………………………….

Question 8 Cross the odd word

1. Wood-Iron - Oxygen – Plastic
2. Carbon dioxide gas - Sunlight - Water- Oxygen gas
3. Oil-Milk - Water – Wood
4. Roots - Stems - Leaves - Sunlight
5. Clam - Zooplankton - Algae – Hawks
6. Pine trees - Apple trees - House flies - Grasses.
7. Mouse - Eagle - Grass – Snake

37
 Question 8 Various questions

1. Look at following pictures that shows two different states of water , then
put ( ✓ ) or (  )

1- Matter (b) can change into matter (a) …………….

2- When we boil matter (b) , it changes into liquid state …………….

2. Study the following figures that represent particles of three states of matter,
then put ( ✓ ) or (  )

1- Figure (1) represents solid matter …………….

2- Figure (2) represents liquid matter …………….

3- By increasing the spaces between the particles of figure

…………….
(2) this matter change into solid state

4- Particles of figure (1) have more energy than particles

…………….
of figure (3)

38
 3. Look at the opposite ball model that shows the
particles of a matter, then complete the following
sentences
1. This model represents a substance in
( ......... ) state
2. If we want to make changes in this model to
make this matter in a liquid state, we should (
......... ) the distances between balls.

4. Look at the opposite figures that represent the

three states of matter, then complete the following
sentences
1. Matter in figure …………takes the shape of
its container but its volume doesn't change
2. Particles of figure …………move faster than
that of figure …………and figure …………
3. Particles of figure …………are not held
together

5. Mention the importance of the Earth model

1. ……………………………………….
2. ………………………………………..
6. Mention the importance of the solar system model.
1. ……………………………………….
2. ……………………………………….
6. (B) Look at the opposite figure, then answer
1. What will happen to the ice cube ?
…………………………………………………..
2. What is the type of change? (Give a reason for your answer)
……………………………………………………………….

39
 Model answer

40
 Question 1 choose the correct answer

1. Air 2. stem 3. sugar

4. root 5. root 6. stem
7. leaves 8. method of obtaining 9. Green chlorophyll
food
10. stomata 11. banana tree 12. Tuberous
13. Increasing 14. leaves 15. oxygen
16. up 17. circulatory 18. carbon dioxide
19. heart 20. four 21. down
22. arteries 23. chemical 24. seed dispersal
25. veins 26. decomposers 27. rabbit
28. Grass - Deer - 29. Bacteria and fungi 30. Soil
Bacteria
31. Plant 32. end 33. plant
34. Grass - Rabbit - 35. algae 36. producer
Snake - Hawk -
Bacteria
37. end 38. sun 39. producers
40. sun 41. decomposers 42. food web
43. Bacteria 44. Over fishing 45. Algae
46. Plastic materials 47. Increasing 48. Protected marine
environment
49. Light rain 50. Imbalance 51. Decrease
52. Algae 53. Producer 54. First
55. Coral reefs 56. Throwing plastic 57. Microorganisms
materials into the seas
58. Decrease 59. Increase in the 60. Cold
number
61. Overfishing 62. Nursery 63. Producer
64. White 65. Gaseous 66. Wood
67. particles 68. gases 69. light
70. Volume 71. glass 72. Coin
73. 3 74. solid 75. iron
76. three 77. matter 78. light
79. greater than 80. Model 81. Liquid

41
 82. wood 83. hydrogen 84. particles
85. iron 86. gaseous 87. milk
88. Gold – solid 89. Shape 90. Temperature
91. Microscope 92. Air 93. Water
94. Solar 95. Solids only 96. Kilogram
97. Color 98. Thermometer 99. Mass
100. Length 101. volume 102. Common balance
103. burning of the 104. 5000 105. Glass
paper
106. Measuring tape 107. Iron rust 108. liters
109. Rubber 110. common balance 111. Wood
112. Taste 113. Iron 114. cooling
115. melting 116. filtration 117. gaseous
118. equal to 119. freezing 120. stirring
121. melting 122. making fruit salad 123. melting and
evaporation
124. The ice cubes 125. shape and size 126. seaweed
change from solid to
liquid
127. condenses 128. melting of wax 129. move faster
130. a physical change 131. salt 132. amass only
to water

Question 2 Put (true) or (false) answers

1.  26. ✓ 51. 
2.  27. ✓ 52. ✓
3.  28. ✓ 53. ×
4. ✓ 29. ✓ 54. ×
5. ✓ 30. ✓ 55. ×
6.  31.  56. ✓
7. ✓ 32. ✓ 57. ×
8.  33. ✓ 58. ✓
9.  34. ✓ 59. 
10. ✓ 35. ✓ 60. 

42
 11. ✓ 36. ✓ 61. 
12.  37.  62. ✓
13. ✓ 38.  63. 
14.  39.  64. ×
15. ✓ 40.  65. ✓
16.  41.  66. ×
17.  42.  67. ×
18. ✓ 43. ✓ 68. ×
19. ✓ 44. ✓ 69. ✓
20. ✓ 45.  70. ✓
21.  46. ✓ 71. ✓
22.  47. 
23. ✓ 48. 
24. ✓ 49. 
25. ✓ 50. 
Question 3 Complete the following sentences

1. sunlight 2. roots 3. Water , nutrients

4. carbon dioxide 5. chemical 6. glucoses
7. Arteries, Veins and 8. Circulatory 9. Oxygen
Blood capillaries
10. new plant 11. sugar 12. reproduction
13. reproduction 14. Water 15. Consumers
16. producer 17. (consumers 18. the sun
(predator)
19. living organisms 20. decomposers 21. lion
22. producers 23. decomposers 24. wind
25. producers 26. Consumers 27. Decomposers
28. (consumer 29. prey 30. food web)
(predator)
31. secondary 32. sea turtle 33. algae
34. coral reefs 35. primary consumers 36. increase
37. over fishing 38. UV rays from sun 39. Death

43
 40. grass 41. consumer 42. conservation
programs
43. Extinction 44. small fish 45. temperature
46. producer 47. Sunlight 48. rising in
49. Producer 50. gaseous 51. Liquid
52. solid 53. liquid 54. particles or atoms
55. variable 56. solid 57. gas
58. three 59. liquid 60. energy
61. matter 62. ice
63. solid 64. Solid ,gas
65. solid 66. Solid---- gas 67. Volume
68. solid 69. liquid ----- gas 70. liquid
71. length 72. solid 73. particles
74. solid 75. gas 76. Increase
77. Particles 78. Volume 80. 3000
79. centimeter
81. Chemical 82. physical 83. Measuring cup
84. Helium 85. Copper 86. Copper
87. Cold 88. Hot 89. Physical
90. Increase 91. Compound 92. Increase
93. Condensation 94. Evaporation
95. mass 96. melting 97. heated
98. heating 99. thermal 100. condensation
101. temperature 102. filtration 103. mass , properties
104. temperature 105. compounds 106. new
107. chemical
Question 4 Write the scientific term of each of the followings
1. stomata 19. Habitat restoration 37. Physical properties
2. xylem 20. Coral bleaching 38. Conductivity
3. Veins 21. Nursery 39. Helium
4. phloem 22. microplastic 40. mixtures
5. seeds 23. Extinction 41. Condensation
6. The sun 24. Matter 42. Melting process
7. photosynthesis process 25. Gas state 43. Compound
8. Ecosystem 44. Desalination
26. Solid state
process

44
 9. Runner stem 27. Liquid state 45. Melting process
10. photosynthesis process 28. Gases 46. Mixture
11. wood stem 29. Gas state 47. Filtration process
12. food chain 30. Measuring tape 48. Physical change
13. Food web 31. thermometer
14. Producers organisms 32. Gas state
15. Seabirds 33. Electron microscope
16. overfishing 34. Normal microscope
17. Top predator 35. Globe
18. Population 36. model

Question 5 Give reason

1. Because, Plant produce sugar after making photosynthesis process

2. Because it provides energy to survive and grow
3. Because it provides energy for survive and reproduce
4. Because plant can grow initially without soil
5. Because it increases the amount of absorbed water and nutrients from soil
6. Because it can grow initially on it but finally it need soil to complete growing
7. Because it needs sunlight to make its own food by photosynthesis process
8. Because Plant doesn't need oxygen or water vapour
9. Because it is light seed
10. Because They make its own food by photosynthesis process
11. Because it shows several interconnected food chains among living organisms
12. Because it increase the amount of absorbed water and nutrients from soil
13. 1-wood stem ,2-Upright stem ,3-tuber stem, 4-climb stem ,5-Runner stem
14. Because plant can grow initially without soil
15. Because plants leave absorb sunlight to make its own food by photosynthesis
process
16. It provide food and shelter for many fish and it is important for tourism
17. It provide food , water and shelter
18. Because rainwater will feed the plants which will feed the consumers
19. Because they are toxic and sharp
20. When corals filter the seawater to get their food they ingest these microplastics
so corals get harmed
21. Coral bleaching happens when the water temperature rises , where coral will get
rid of algae and turn completely into white

45
 22. Because all organisms depend on each other for survive
23. because it can’t differentiate between the plastic bags and jelly fish
24. Because plastics area so harmful for marine ecosystem and may be toxic or sharp
for marine organisms
25. Because it has a mass and volume
26. Because it has a fixed volume and take the shape of the container
27. Because it is a gas matter
28. Because it has definite shape and volume
29. To see the shape and parts of germs without microscope
30. Because it is a solid matter
31. Because normal microscope are not powerful enough to see tiny particles
32. Because it is a liquid matter liquids take the shape of the container
33. Because it is a gas matter
34. Because each material in a mixture keeps its properties without any change
35. Because in this process the matter changes without any change in its structure
36. Because when iron reacts with oxygen and water it rusts
37. Because, it is bad conductor of electricity
38. Because , it is transparent materials
39. Because , plastic is bad conductor of heat
40. .Because ,it doesn’t change in structure of mater it change in sates of matter
41. Because it composed of two or more gases together
42. Because , it doesn’t contain mass of volume

Question 6 What happens

Concept 1.3
1. The plant will not make photosynthesis process and will die
2. It will not make its own food and may die
3. It will not fix in soil and absorb water or nutrients
4. The leaves become smaller and pale green color and may die
5. It will make its own food and grow..
6. the amount of oxygen will decrease and amount of carbon dioxide will increase
7. the leaves become smaller and pale green colour and may die
8. the plant will not fix in soil and does not absorb water or nutrients
9. The leaves become smaller and pale green color and may die
10. It is process through which the green parts of plants (leaves)absorb sunlight to
make their own food
11. The plant cannot make its own food and may die
12. They can grow into a new plant
13. The nutrients will not return to the soil and become infertility

46
 14. The plant cannot make its own food and may die
15. It will die
16. They can grow into a new plant
17. They get rid of algae from their tissues causing coral bleaching
18. number of primary consumer increase and amount of producers (plants) decrease
and it disturb the ecosystem
19. coral color turns to white and it will die
20. coral get rid of algae, coral color turns to white, microorganisms will move to cool
water
21. Plants may die due to lack of water and primary don't find food to eat
22. The number of primary consumer decrease or will die and number of secondary
consumers decreases
23. The amount of pollution in the marine environment increase
24. They will move to new habitat or will die
25. they will move to another area where water is cold
26. It changes from liquid state into gas state
27. It will take the shape of each container
28. It will not change
29. It will have a definite shape
30. It will increase
31. It will increase
32. It will increase
33. It will be organized
34. It charges from liquid state to solid state
35. The mass and properties of sugar don’t change
36. The water will evaporate leaving the salt in the container
37. It will float on the surface of liquid
38. It will sink on the liquid
39. The density of matter will increase
40. It will change into ice
41. The ice will change into water
42. It doesn’t change

Question 7 Answer the following

A- Form a food chain by using the following organisms

o Grass → Rat → Snake → Hawk
o Grass → insect → frog → snake → Hawk
o Algae → zooplankton → coral → parrotfish → shark

47
 Question 8 B-Cross the odd word
1. Oxygen
2. Oxygen gas
3. Wood
4. Sunlight
5. Hawks
6. House flies.
7. Grass
Question 8 Various questions
1. Look at following pictures that shows two different states of water , then
put ( ✓ ) or (  )

1- Matter (b) can change into matter (a) ✓

2- When we boil matter (b) , it changes into liquid state 

2. Study the following figures that represent particles of three states of matter,
then put ( ✓ ) or (  )

1- Figure (1) represents solid matter ✓

2- Figure (2) represents liquid matter ✓

3- By increasing the spaces between the particles of figure (2)


this matter change into solid state
3- Particles of figure (1) have more energy than particles of

figure (3)
3. Look at the opposite ball model that shows the particles of a matter, then
complete the following sentences
1. This model represents a substance in (solid) state

48
 2. If we want to make changes in this model to make this matter in a liquid
state, we should (increase) the distances between balls.

4. Look at the opposite figures that represent the three states of matter, then
complete the following sentences
1. Matter in figure (B) takes the shape of its container but its volume doesn't
change
2. Particles of figure (C) move faster than that of figure ( B ) and figure (A)
3. Particles of figure (C) are not held together

5.Mention the importance of the Earth model

1. see and understand how thigs work
2. Learn about many things at just the right size
6. Mention the importance of the solar system model.
1. See all the planet at once
2. Compare between the planet which one is the biggest and which one closest
to earth
6. (B) Look at the opposite figure, then answer
1. What will happen to the ice cube ?
* It will melt and changes into water
2. What is the type of change? (Give a reason for your answer)
* physical change /Because it is the change of state of water without any change
in its structure

49