Queen’s College

Half-yearly Examination 2018 - 2019

Integrated Science
Question-answer Book
Secondary 1 Date : 10 January, 2019
Max. mark: 100 Time: 08:30 a.m. – 09:30 a.m.
Class: _________( )

Sections A B Total
Marks
/40 /60 /100
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Instructions:
1. Answer ALL questions.
2. For Section A, the answers must be marked on the Multiple-choice Answer Sheet.
3. For Section B, the answers must be written in the spaces provided on this Question-answer Book.
4. ALL drawings and graphs must be drawn using HB pencil, otherwise 1 mark will be deducted.
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Section A – Multiple-choice Questions (40 marks, 2 marks each)
Choose the correct answer for each question and mark the answer on the Multiple-choice Answer Sheet.

1. Which of the following branches of science involves the study of matter, energy and force?
A. Geology B. Physics C. Chemistry D. Biology

2. Which of the following are the steps involved in a scientific investigation?

(1) make an observation (2) form a hypothesis (3) draw a conclusion
A. (1) and (2) only B. (1) and (3) only
C. (2) and (3) only D. (1), (2) and (3)

3. Which of the following statements about the non-luminous Bunsen flame is/are correct?
(1) The flame is regular in shape.
(2) The flame is produced when the air hole of the Bunsen burner is closed.
(3) The flame has a lower temperature than the luminous Bunsen flame.
A. (1) only B. (2) only
C. (1) and (3) only D. (2) and (3) only

4. Which of the following combinations is incorrect?

What to measure Instrument used Unit
o
A. Temperature Thermometer C
B. Mass Balance cm3
C. Volume of liquid Mesuring cylinder mL
D. Length Metre rule cm

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5. When we perform an experiment using a corrosive chemical, we should
(1) have fire extinguishers ready.
(2) wear protective gloves.
(3) wear safety goggles.
A. (1) only B. (2) only
C. (1) and (3) only D. (2) and (3) only

6. Which of the following statements best explains why water drops are formed on the surface of a glass
containing iced water?

A. Some water in the glass leaks through the surface of the glass.
B. Some water vapour in the air is cooled by the glass and changes to water drops.
C. Some ice in the glass melts and changes to the water drops.
D. Some water in the glass evaporates and becomes the water drops.

7. Which of the following is not an observation about a burning candle?

A. The wax melts when the wick is lit.
B. The burning candle gives out some black smoke.
C. The flame is yellow in colour.
D. The wax is produced from petroleum.

8. We should repeat the measurements several times and average the results. This is to
A. avoid the errors totally during measurements.
B. minimise the errors during measurements.
C. make sure the measurement in each trial is accurate.
D. make a meaningful measurement.

9. Which of the following descriptions about shark is/are correct?

(1) Body covered with hair
(2) Breathe with gills
(3) Body temperature does not change with environment
A. (2) only B. (1) and (2) only
C. (2) and (3) only D. (1), (2) and (3)

10. Which of the following statements about plants is correct?

A. All plants produce flowers.
B. All plants produce seeds for reproduction.
C. Vascular plants usually grow taller than non-vascular plants.
D. Non-vascular plants usually grow in dry areas.

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11. Which of the following situations will take the shortest time for the sugar to dissolve completely?
Given the masses of the sugar in all situations are the same.
A. B.

sugar powder sugar powder

water water
(100 cm , 30oC)
3
(100 cm , 60oC)
3

C. D.

sugar cube sugar cube

water water
(100 cm , 30oC)
3
(100 cm , 60oC)
3

12. A potted plant and its key features are shown in the table below:

Feature Present / Absent

vascular tissue present
seed absent
flower absent

To which group does this plant belong?

A. Flowering plant B. Seed plant
C. Non-vascular plant D. Vascular plant

13. The important characteristic used for the classification of seed plants is whether they have
A. fruits. B. leaves.
C. flowers. D. roots.

14. We sweat when we feel hot. This shows that living things
(1) can excrete. (2) can reproduce. (3) can detect and react to stimuli.
A. (2) only B. (1) and (2) only
C. (1) and (3) only D. (1), (2) and (3)

15. Which of the following descriptions about freezing is correct?

A. It is a change of state from liquid to solid. B. It is a change of state from solid to liquid.
C. It is a change of state from gas to liquid. D. It is a change of state from gas to solid.

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16. A key is shown below for identifying three animals.
1 a With wings X
b Without wings 2
2 a With limbs Y
b Without limbs Z
Which of the following combinations is possible for animals X, Y and Z?
X Y Z
A. seahorse crocodile shark
B. sparrow turtle shrimp
C. spider eagle dolphin
D. butterfly frog salmon

17. Which of the following definitions is the best to describe evaporation?

A. The change of a liquid into a gas at its boiling point.
B. The change of a liquid into a gas above its boiling point.
C. The change of a liquid into a gas at any temperature.
D. The change of a liquid into a gas at a fixed temperature.

18. Which of the following statements is incorrect?

A. Plants do not breathe. B. Animals move faster than plants.
C. Animals react to stimuli quickly. D. Green plants can make food by themselves.

19. Which of the following statements about classification is incorrect?

A. Classification helps scientists study things systemically.
B. Living things with similar key features are put into the same group.
C. The features change over time should be used in classification.
D. A key can be used in classification.

20. The feeding relationship of three kinds of living things in the ocean is shown in the food chain below.
Lobster → Octopus → Shark
If the sharks are hunted by humans and decreases in number greatly,
(1) the number of octopuses will decrease.
(2) the number of lobsters will decrease.
(3) the number of lobsters will increase.
A. (2) only B. (3) only
C. (1) and (2) only D. (1) and (3) only

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Section B – Structured Questions (60 marks)

1. Describe how to measure the volume of a cork shown below. You are provided with a 1cm3 iron block
and a measuring cylinder to help the measurement. [Q1=3M] (3 marks)

Cork 1cm3 iron block

_______________________________________________________________________________________

_______________________________________________________________________________________

_______________________________________________________________________________________

_______________________________________________________________________________________

2. Andy wants to find out the time needed for a certain amount of sugar to dissolve in water. The steps of
his experiment are shown below. [Q2=4M]

① Measure 5 g of sugar.
② Put the sugar into a beaker.
③ Measure 200 mL of water using apparatus X.
④ Pour the water into the beaker.
⑤ Start measuring the time and stir the liquid with apparatus Y until all the sugar dissolves.

(a) What are apparatuses X and Y? (2 marks)

X: ___________________________________ Y: ____________________________________

(b) Suggest one instrument Andy can use to measure the mass of sugar in Step 1. (1 mark)
_______________________________________________________________________________________

(c) What instrument should Andy use to measure the time for the sugar to dissolve in water
completely? (1 mark)
_______________________________________________________________________________________

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3. David would like to study how the mass of an object affects the time for it to fall from a certain height
to the ground. He made a hypothesis: ‘The heavier the object, the shorter the time it takes to fall from
the top of a building to the ground.’ He designed four tests for the investigation. [Q3=6M]
Test A Test B Test C Test D
Mass of object 100 g 100 g 200 g 200 g
Material of object iron iron iron copper
Height of building 20 m 10 m 20 m 20 m

(a) Which two tests should David carry out to test his hypothesis? Explain your answer. (2 marks)
_______________________________________________________________________________________

_______________________________________________________________________________________

(b) Based on your answer to (a), complete the table below to show the independent variable, the
dependent variable and the controlled variables involved in this investigation. (4 marks)
Independent variable Dependent variable Controlled variables

4. The photographs below show a lizard and a salamander. [Q4=6M]

Lizard Salamander
(a) Referring to the photographs, give one external feature of a lizard which allows it to be classified
as a reptile. Explain how this feature helps the survival of the lizard. (2 marks)
_______________________________________________________________________________________

_______________________________________________________________________________________

(b) Suggest one habitat of salamander. How can adult salamander achieve breathing apart from using
its lungs? (2 marks)
_______________________________________________________________________________________

_______________________________________________________________________________________

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 (c) Both lizard and salamander belong to the same group of animals. Name the group and explain
briefly why they are placed in this group. (2 marks)
_______________________________________________________________________________________

_______________________________________________________________________________________

5. Read the passage about tigers below and answer the questions. [Q5=6M]
Tiger—the endangered big cat
Tiger is the largest and heaviest species in the cat family. However, this strong, powerful predator (捕食性
動物) is nearly extinct. Among the nine subspecies of modern tiger,
three are extinct and the remaining six are endangered.
It is believed that different parts of a tiger have different medical
uses. Also, its fur is very valuable. Therefore, many tigers are killed
for commercial reasons. Although the trading of all tiger parts is
illegal nowadays, the animal still faces threats like poaching (偷獵)
and habitat destruction.

(a) What is an endangered species? (1 mark)

_______________________________________________________________________________________

_______________________________________________________________________________________

(b) State two reasons why tigers are nearly extinct. (2 marks)
_______________________________________________________________________________________

_______________________________________________________________________________________

_______________________________________________________________________________________

(c) Other than banning the trade of tiger parts, suggest one more measure that can be taken to protect
the tigers. (1 mark)
_______________________________________________________________________________________

_______________________________________________________________________________________

(d) State two ways that we can do to help conserve biodiversity. (2 marks)
_______________________________________________________________________________________

_______________________________________________________________________________________

_______________________________________________________________________________________

_______________________________________________________________________________________

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6. The photograph below shows some dew on a leaf surface during a humid day. [Q6=9M]

Dew

(a) During what time of a day does this phenomenon occur? (1 mark)
_______________________________________________________________________________________

(b) (i) Give two natural sources of water forming dew. (2 marks)
_______________________________________________________________________________________

_______________________________________________________________________________________
(ii) Name and explain the process of how the dew is formed on the leaf. (2 marks)
_______________________________________________________________________________________

_______________________________________________________________________________________

(c) The dew will disappear when the Sun rises. Explain briefly. (2 marks)
_______________________________________________________________________________________

_______________________________________________________________________________________

_______________________________________________________________________________________

(d) The photograph below shows a leaf taken near the seaside, on which some salt crystals are found.

Salt crystal

Why are salt crystals formed on the leaf surface? Explain in terms of solubility. (2 marks)
_______________________________________________________________________________________

_______________________________________________________________________________________

_______________________________________________________________________________________

_______________________________________________________________________________________

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7. Some children find four insects and the features are shown in the table below. [Q7=7M]
Feature Antennae Legs Wings Others
Insect
A 2 6 2 Compound eyes
B 2 6 4 Compound eyes
C 2 6 2 Hairy body
D 2 6 4 None

(a) From the table, determine which two features that would be useful in constructing a key to classify
the above four insects. (2 marks)
_______________________________________________________________________________________

_______________________________________________________________________________________

(b) Construct a key in the space below to classify the above four insects. (5 marks)

8. Paul collected 10 cm3 of pond water in a test tube. He stoppered the test tubes and shook it gently.
The drawing on the right shows what happens in the test tube after standing for 10 minutes.
[Q8=8M]

(a) Why is it a layer of solid in the pond water? (2 marks)

___________________________________________________________________________________

___________________________________________________________________________________ Pond
water
___________________________________________________________________________________

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 (b) Draw a labelled vertical section diagram for removing the solid in the pond water by filtration.
(4 marks)

(c) Name one method to allow the filtrate to become drinkable water. Explain briefly. (2 marks)
_______________________________________________________________________________________

_______________________________________________________________________________________

_______________________________________________________________________________________

9. Tammy carries out an experiment to investigate the effect of temperature on the evaporation rate (蒸發
速率) of alcohol. The diagram below shows her experimental set-up. [Q9=11M]

thermometer

water
alcohol

She measures the mass of alcohol at the beginning and at the end of the experiment. She repeats the
experiment with water at different temperatures. Her experimental results are shown below.
Temperature of water (°C)
35 40 45 50
Mass of alcohol at the beginning (g) 8.5 8.4 8.6 8.5
Mass of alcohol at the end (g) 7.9 X 7.3 7.0
Change in mass of the alcohol (g) 0.6 0.9 1.3 1.5

(a) Find the value of X in the table. Show your calculation. (2

marks)

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_______________________________________________________________________________________
(b) According to Tammy’s experimental results, draw a suitable graph to show the change of mass of
alcohol with water temperature. (4
marks)

(c) Why a hot water bath but not a Bunsen burner is used to warm the alcohol? (2 marks)
_______________________________________________________________________________________

_______________________________________________________________________________________

(d) State two branches of science investigated in this experiment. (2 marks)

_______________________________________________________________________________________

_______________________________________________________________________________________

(e) What conclusion can Tammy draw in her experiment? (1 mark)

_______________________________________________________________________________________

_______________________________________________________________________________________

End of Paper

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