Governorate Nozha Directorate of Education Nozha Language Schools Ismailia R oad Branch

Department: Science Form : 6th primary

A- Complete:

Unit One

1- is a rigid bar that rotates around a fixed point called and is affected by . and .. 2- . is a fixed point that the bar rotates on. 3- The effort point (E): is the point at which the affects. 4- Functions that can be performed by level are determined according to the locations of the force, .. ,. And according to their . 5- Levers can be classified into types. 6- In levers of first order the . Is located between the .. and the .. 7- The levers of first type save effort when the is longer than the . 8- Levers of second type save effort because effort arm is always .. Than resistance arm. 9- In the levers of third order, the located between the .. and the.. 10- The bottle opener and wheel barrow are levers of the .. kind, while the pilers are levers of the kind. 11- The pincers are from the levers of . Class while the ice holder is from the levers of the .. Class. 12- The nutcracker is a lever of .. Class, while the scissors are a lever of . Class. 13- The forceps are lever of the third order in which the . is longer than.. 14- . and are examples of the first class levers. 15- . and are examples of second class levers. 16- . and are examples of third class levers.

B- Look at the following figures, then determine the kind of lever and write the name of the parts of which arrows point.

C- in the figures show: 1. what are the types of ( A ) and ( B ) levers ? C- Choose 1- The effort lies between resistance and fulcrum in the. ( Wheel borrow pincers hammer sugar holder ). 2- .. Are examples of third order levers. ( Pincers scissors coal tongs pliers ). 3- Fulcrum is located between resistance and effort in the .. ( Nutcracker ice holder Scissors bottle opener ). D- Give reason for: 1- Man depends in his life on levers. 2- The seesaw is a lever of first class. 4- Levers of the third class do not save effort but we use them in our life.
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E- Mention the type of lever for each of the following 1- Nutcracker 2- Tweezers 3- Wheel barrow 4- Scissors 5- Cool tongs 6- Seesaw 7- Pliers 8- Forceps F- In the opposite figure The load and the wheel barrow Weigh 50 kg. Weight What force must the man exert To move the barrow G- Put ( ) or ( ) 1- Second class levers has a force between the resistance and the fulcrum. ( ) 2- The crowbar is an example of first class levers ( )

Unit.2 Electric energy I- Complete: 1- . is the main source of heat & light 2- . A tool that converts electric energy to light 3- ............. is are considered one type of light bulb. 4- The filament of the light bulb is made of 5- The electric lamp connected to the electric circuit by .. , .. 6- We fill the lamp with . gas to stop combustion. II- Write the Sc. Term: 1- The element which the filament of the electric lamp made of () 2- The most popular source of artificial light in all houses 3- The flow of electric charges through a conductor () ()

4- The coiled wire which made of tungsten in the electric lulls () 5- The part of lamp which protects the filament from burning by isolating the air () () 7- The lamp which has 2 filament of tungsten. III- G.R.F: 1- Man invented the electric lamp. 2- The electric lamp is filled with inert gas. 3- the base of the lamp has 2 pieces of lead
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6- A part of the electric lamp which connects the lamp in the circuit ()

4- its preferred to connect lamps at home in parallel 5- The connected lamp in series has one route from electric lamp. 6- Connecting lamps in series in not preferred. IV- Write the lable: 1- 2- 3- 4- 5-

II-V- With drawing explain how can you connect a group of lamps in series.

Danger of electricity. I- complete: 1- , ... & . from the leses of electricity. 2- Electricity is dangerous to .. 3- ..,. & from the dangerous effects of electricity. 4- .., are good conductor of electricity. 5- ..,,.. are bad conductor of electricity. 6- The harms of electric shock depend on . & 7- From the precautions in dealing with electricity are. a) .. b) .. c) .. d) .. e) .. f) .. II- Give reason for: 1- Our use of electricity increases. 2- Electricity can cause danger. . 3- We must place a piece of plastic in the socket. 4- We must not leave the wire UN isolated. 5- You have an electric shock if you touch a source of electricity. III- Write the sc. Term: 1- Its the result of an electric current passing through the human body. ()
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2- A closed path that the electric current passes in

() ()

3- The isolated parts that the electric current cables stretched on 4- Its caused by neglected the safety precautions that have to be followed while dealing with electricity () () 6- the materials that dont allow the electric charges to flow through them () IV- What happens it: 1- If you touch a source of electricity which your hands. 2- Deal with electricity with neglected way. 3- If the injured person from electricity cant breathe 4- If we place several connections in the same socket. 5-You put a source of heat near the furniture & curtains. 5- The materials that allow the electric charges to flow through them

A- Complete:

Unit Three

1- Occurs when earth, moon and sun are nearly on one straight line with the moon in the middle. 2- hides the sunlight from us and a . Of the moon is formed. 3- Solar eclipse does not last more than . Minutes and .. Seconds. 4- There are three types of solar eclipse which are ., and . 5- Total Solar eclipse is .. 6- Partial Solar eclipse is .. 7- Annular Solar eclipse is .. 8- Doctors warn of . As its rays .. and can lead to within few minutes. 9- Solar eclipse effects the eye in general or the . 10-The outer solar corona keeps on emitting . To the eye like ..and 11- . Are used to observe the solar eclipse. 12- The lunar eclipse occures in of lunar month. 13- Lunar eclipse occures when earth hides .. Or apart of it from moon at a rate of .. lunar eclipses per year. 14- There are two types of lunar eclipse which are .. and 15- The lunar eclipse becomes if the moon falls in the penumbra area. 16- When the earth comes between moon and sun, lunar eclipse will be ..

B- Compare between solar eclipse and lunar eclipse. C- Compare between total solar eclipse, partial solar eclipse and annular solar eclipse. D- Compare between total lunar eclipse and partial lunar eclipse. E- Put ( ) or ( ) 1- Two phenomena of lunar and solar eclipse are repeated regularly and can be predicted 2- More than one type of solar eclipse can be observed. eclipse can be observed What is meant by? 1- Partial solar eclipse. 2- Total solar eclipse. 3- Cone umbra. 4- Penumbra. 5- Annular solar eclipse. ( ( ( ) ) )

3- When the cone shadow doesnt reach earth surface so annular solar

Unit. 4 I- Complete: 1- Green plants depend on ..,.. from the air .. & .. From the soil 2- Plants make their own food through a process called .. 3- .,..,., are the elements which the plants need in small amounts 4- Absorbing minerals & water from the soil occurs by . in the root. 5- The root systems composed of . &. 6- The root hair is lined from in side with a thin layer of .. 7- The root hair is lined for med from layer. 8- The role of root hair in absorption of water & minerals. a) .. b) .. c) .. d) .. 9- The tissue which Transfers water & salts to the plant parts is called.. 10- Osmotic properties is . 11- The vital process by which the plant get rid of water is called II Write Sc. Term: 1- The tissue that transfers the water & mineral to all parts of the plants. () 2- The part of the root that responsible for absorption () () 4- The two cells which surround the stomata
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3- The openings in the plant leaves to get rid of water in the form of w.v ()

5- A force produced due to the lost of water which creates pressure () 6- The transfer water of high concentration to the low concentration. () III- G.R.F: 1- the rises of water to the top of the plant .. 2- Stomata are very important. .. 3- Root hair has a concentrated solution more than the soil solution. .. 4- The age of root hair is short ( few days ) .. 5- The root hair secretes sticky substance. .. IV- What happens if: 1- The root hair doesnt secrete sticky substance. 2- The osmotic pressure of the root hair is less than that of the soil. 3- The plant root cant respire to produce energy. 4- The leaves dont have stomata. 5- The plant doesnt make photosynthesis.

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