Sha Tin Methodist College
First Examination (2005 - 2006)
Integrated Science
Form Two
Time allowed: 1 hour
Name : __________________
Class : __________ (
)
Instructions to students:
1. This paper carries 100 marks.
2. Answer ALL the questions.
3. Write the answers of Part I－II on the Answer Sheet (1) and Part III－V on the Answer Sheet (2)
provided.
___________________________________________________________________________________
I.
True or False (15 marks)
You should answer this part on the Answer Sheet (1). Decide whether each of the following
statements is True or False.
1. Sound cannot travel through a vacuum.
2. Different people have different ranges of hearing. The upper limit of young people is higher than
that of elderly people.
3. The cochlea in the ear transmits and amplifies the vibrations.
4. Cigarette smoking increases the chance of having heart diseases because it decreases the amount of
fat in blood.
5. Green plants help to maintain the balance of carbon dioxide and oxygen in nature by respiration.
6. Breathing occurs in everybody’s cell to support body activities.
7. Destarching of leaves can be done by boiling the leaves in alcohol.
8. Respiration in green plants occurs at night only but not in the day time.
9. Dry cobalt chloride paper is pink and it can be used to detect water.
10. There is no gravity on the Moon.
11. Hydrogen is used as a fuel of rocket.
12. Weight is a force.
13. Force is a push or pull.
14. In space, astronauts can stand in the spacecraft easily.
15. The rough surface of the tyre can prevent a car from slipping.
II.
Multiple Choice (25 marks)
You should answer this part on the Answer Sheet (1).
1. Which of the following structures carries message directly to the brain?
A. auditory nerve
B.
cochlea
C.
ear bones
D.
2. When a person is short-sighted
(1)
the eyeball is too long.
(2)
the lens of the eye is too thin.
(3)
the image of a distant object is focused in front of the retina.
(4)
he should wear divergent lenses.
A. (2) and (3) only
B. (3) and (4) only
C. (1), (2) and (3) only
D. (1), (3) and (4) only
1
eardrum
3. Which of the following animals can detect sound with the highest frequency?
A.
Dog
B.
Human
C.
Bird
D.
Dolphin
4. Colour blindness is
5.
A.
caused by the deficiency of vitamin A in the diet.
B.
caused by the deficiency of vitamin B in the diet.
C.
inherited.
D.
corrected by wearing glasses.
If the light rays of an object fall on the blind spot,
A.
the eye will see the object sharply.
B.
the eye will see the object black.
C.
the eye will see the object inverted.
D.
the eye will not see the object.
6. What is the energy change at the eardrum?
A.
Sound energy to kinetic energy.
B.
Sound energy to electrical energy.
C.
Sound energy to potential energy.
D.
Sound energy to sound energy.
7. Which of the following is in correct order of increasing proportion in the air?
A.
Nitrogen, oxygen, carbon dioxide, inert gases
B.
Carbon dioxide, inert gases, nitrogen, oxygen
C.
Inert gases, carbon dioxide, oxygen, nitrogen
D.
Carbon dioxide, inert gases, oxygen, nitrogen
8. Burning can produce:
(1) light energy
(2) heat energy
(3) food
A.
(1) and (2) only
B.
(2) and (4) only
C.
(1), (2) and (4) only
D.
All of the above
(4) carbon dioxide
9. Which description about air is correct?
A.
It can change hydrogencarnate indicator milky.
B.
It contains many different gases.
C.
Breathed air contains no oxygen.
D.
It is white in colour.
10. The colour change of hydrogencarbonate indicator when it is moved from normal air to air with
high carbon dioxide concentration is:
A.
from red to yellow
B.
from yellow to red
C.
from red to purple
D.
from purple to yellow
Questions 11 and 14 refer to the diagram on the right.
11. During the experiment, it is observed that the coloured liquid index
gradually moves towards the bell jar. Which of the following is the
correct explanation for this?
A.
The mouse uses up oxygen.
B.
Chemical X absorbs carbon dioxide released by the mouse.
C.
Chemical X absorbs water vapour released by the mouse.
D.
Chemical X absorbs oxygen released by the mouse.
2
12. What is chemical X?
A.
Sodium chloride
B.
Washing Soda
C.
Soda lime
D.
Lime
13. Which of the following factors can also make the coloured liquid index to move towards the bell
jar?
(1) An increase in temperature
(2) An increase in light intensity
(3) An increase in air pressure
A.
(1) only
B.
(2) only
C.
(3) only
D.
(1) and (3) only
14. How can you set up a control for this experiment?
A.
Similar apparatus without the mouse.
B.
Similar apparatus without chemical X.
C.
Similar apparatus without the coloured liquid.
D.
Similar apparatus without the coloured liquid and chemical X.
15. The products produced in respiration are:
A.
energy, water and carbon dioxide
B.
energy, food and carbon dioxide
C.
energy, food and oxygen
D.
energy and water
16. When you squeeze a soft drink can, force is applied to change the can’s
A. speed.
B. direction of motion.
C. shape.
D. mass.
17. There are three forces acting on the bike.
If the bike moves with increasing speed,
A. the force from engine must be larger than the sum of air resistance and the friction.
B.
the force from engine must be equal to the sum of air resistance and the friction.
C.
the force from engine must be smaller than the sum of air resistance and the friction.
D. the sum of air resistance and the friction must be larger than the force from engine.
18. Which of the statement(s) concerning force of gravity and magnetic force is(are) correct?
(1) They are examples of non-contact force.
(2) Both are measured in newton (N).
(3) Both are attractive forces only.
A. (1)and (2) only
B.
(1)and (3) only
C.
3
(2)and (3) only
D.
All of the above
19. The experiment of rocket balloon can be used to show that
A.
rockets use air for propulsion.
B.
rockets can move in air.
C.
forces occur in pairs.
D.
rockets can move in a straight line when there is no friction.
20. Which of the following concept is/are due to the effect of the force of gravity?
(1) The Moon moving around the Earth.
(2) Water flowing downwards in a waterfall.
(3) The movement of the pointer of a compass.
A.
(1) only
B.
(1) and (2) only
C.
(2) and (3) only
D.
(1), (2) and (3)
21. An astronaut weighs less on the Moon than on the Earth because
A.
the Moon has no atmosphere.
B.
the astronaut is far away from the Earth.
C.
the force of gravity pulling on the astronaut is smaller on the Moon.
D.
the Earth’s force of gravity has no effect on the astronaut.
Questions 22 and 24 refer to the diagram below, which shows the speed-time graph of a racing car.
Assume that there is no air resistance.
22. In which time interval is the pushing force provided by the engine larger than the friction between
the tyres and the road?
A. Time interval 1
B.
Time interval 2
C.
Time interval 3
D.
Time interval 4
23. In which time interval is the pushing force provided by the engine equal to the friction between the
tyres and the road?
A.
Time interval 1
B.
Time intervals 1 and 3
C.
Time intervals 1 and 4
D.
Time intervals 2 and 4
24. In which time interval is the pushing force provided by the engine smaller than the friction between
the tyres and the road?
A. Time interval 1
B.
Time interval 2
C.
Time interval 3
25. Pick out the FALSE statement.
A.
Friction acts in the same direction as the motion of a moving body.
B.
Friction produces heat.
C.
Friction is reduced by lubricants.
D.
Friction helps a student climb up a tree.
4
D.
Time interval 4
III. Matching
(15 marks)
Match the two columns, each letter in column B should only be used ONCE.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Column A
Cornea
Tar
Nitrogen
Pupil
Nicotine
Iris
Lubricant
Retina
Carbon monoxide
Spring balance
Oxygen
Reaction
Weight
Spacecraft
Newton
Column B
a. Lowers the amount of oxygen in blood.
b. Turns lime water milky.
c. An instrument for measuring force.
d. There is no simple test for gas.
e. Allows light to pass through.
f. Cause heart disease.
g. In opposite direction of action.
h. Turns lime water clear.
i. Controls the size of the pupil.
j. Cause lung cancer.
k. Adjust thickness of the lens.
l. It relights a glowing splint.
m. An example of force.
n. Contains rods to detect light.
o. Vehicle designed to operate in Earth orbit or in outer
space.
p. It helps reducing friction.
q. For focusing light rays.
r. The force of gravity pulling an object towards the
Earth.
s. An unit of force.
IV. Fill in the blanks
(10 marks)
1.
Our eyes have
(a) . If an object is too far away or too small, we cannot see it clearly.
2.
Sometimes the brain makes mistakes in the interpretation of messages. This leads to the formation
of (b) .
3.
The raw materials for green plants to make food are
4.
(e)
(c)
and
(d) .
are the leaves, which have both green and non-green parts.
5.
Only green plants can carry out photosynthesis since they have (f)
6.
Before landing, the
7.
The very high temperature of the space shuttle returning to the earth is caused by friction. The
energy change in this effect is:
(h) energy to
(i)
energy.
8.
To avoid the cause of burning during space shuttle return to the earth,
the outer surface of the space shuttle.
(g)
.
of the shuttle will be open to help reduce the speed further.
(j)
are used to cover
V. Short Questions. (35 marks)
Lens in our eyes would become thicker when we are looking at near objects and become at thinner at
distant objects. The diagram on the right shows the changes of thickness of the lenses in May when she
is looking at a butterfly.
Between 0 and 5th second, did the butterfly
fly towards or away from May? (1 mark)
b) In which period of time did the butterfly
stand still? (1 mark)
c) (i) Can May still see the butterfly clearly if it
flies towards her after 12 seconds? (1 mark)
(ii)Based on the answer in (i), what is the
limitation of our eyes? (1 mark)
d) Why does the thickness of the lenses have
to change? (1 mark)
e) Please suggest the kinds of lens to correct
the short-sighted and long-sighted eye defect. (2 marks)
a)
5
2.
Study the diagram on the right:
Gas B
X
a)
b)
Name processes X and Y.
(2 marks)
What is gas A and gas B?
(2 marks)
Green plants
All living organism
Gas A
Y
3.
The diagrams below shows the steps involved in testing for starch in green leaves.
a)
b)
c)
d)
Use the numbers on the diagrams to show the correct sequence of the test. (2 marks)
What are the purpose of steps (2) and (3)? (3 marks)
If starch is present in the leaf, what would be the result?
(1 mark)
What inference can be made if starch is detected in the leaf?
(1 mark)
4.
The diagrams below show the friction in action. For each diagram:
(i)
Identify and name the two surfaces between which the friction acts.
(ii)
State what the friction is doing.
(iii) Imagine what would happen if the friction suddenly disappeared.
a.
5.
Pencil and paper. (3 marks)
b.
Study the diagram on the right.
State three effects of force exerted by each
soccer player on the motion of the football.
a)
b)
c)
Player No. 10
Player No. 3
Goalkeeper
(1 mark)
(1 mark)
(1 mark)
6
Shoe on ground. (3 marks)
6.
The diagram on the right shows the shape of a
rocket, a high-speed train and a fish.
a)
What designs of shapes have been used from the
diagrams? (1 mark)
What is the advantage of possessing such a shape?
(1 mark)
b)
7.
Put the correct number against the description of each force. (6 marks)
The diagram below shows a man trying to push a The diagram below shows the main forces
heavy box along the floor.
acting on the man, the box and the floor.
   End of Paper

Setter:
7
M.W. Leung
Sha Tin Methodist College
First Examination (2005 - 2006)
Integrated Science
Answer Sheet (2)
100
Form Two
Time allowed: 1 hour
Name : __________________
Class : __________ (
)
I True or False
1. T
2. T
11. T
12. T
3. F
13. T
4. F
14. F
5. F
15. T
6. F
7. F
8. F
9. F
10. F
II M.C.
1. A
11. B
21. C
3. D
13. C
23. B
4. C
14. A
24. D
5. D
15. A
25. A
6. A
16. C
7. D
17. A
8. C
18. A
9. B
19. C
10. A
20. B
2. D
12. C
22. B
III. Matching
(15 marks)
1.
q
2.
j
3.
d
4.
e
5.
6.
i
7.
p
8.
n
9.
a
10.
11.
l
12.
g
13.
r/m
14.
f
o
c
15.
s
15
IV. Fill in the blanks
(10 marks)
(a) limitations
(f) Chlorophyll / chloroplast
(b) illusions
(g) parachute
(c) Carbon dioxide
(h) kinetic
(d) water
(i) heat
(e) Variegated leaves
(j) heat-resistant materials
V.
Short Questions
1. (a)
(b)
10
(35 marks)
Flied away. (1)
Between 7th and 10th second. (1)
(c) (i) No (1)
(ii) We cannot see objects which are too close to our eyes. (1)
(d)
To focus objects from different distances on the retina. (1)
(e)
Short-sighted: Concave lens (1)
7
Long-sighted: Convex lens (1)
2. (a)
(b)
X: Photosynthesis
(1)
Gas A: Carbon dioxide (1)
Y: respiration
Gas B: Oxygen
1
(1)
(1)
4
3. (a)
(b)
(3), (2), (1), (4)
½ @ each
Step 2: To remove chlorophyll from the leaf.
(1)
Step 3: To kill the leaf cells and make the leaf soft.
(2)
(c)
The leaf becomes blue-black in colour when iodine solution is added onto it. (1)
(d)
The leaf has carried out photosynthesis.
7
(1)
4. (a) (i) The graphite and the paper.
(1)
(ii) Friction helps making marks on the paper.
(1)
(iii) We cannot draw anything on the paper.
(1)
(b) (i) Shoe and ground.
(1)
(ii) Friction prevents us from slipping.
(1)
(iii) We cannot walk or run.
(1)
5. (a)
6
Player No. 10 : It can start the motion of the football.
(1)
(b)
Player No. 3:
It can change the direction of motion of the football. (1)
(c)
Goalkeeper :
It can stop the motion. (1)
6. (a)
Stream-lined.
(1)
(b)
It can help reduce friction in air or in water.
3
(1)
2
7.
Put the correct number against the description of each force.
Number
Force
(a)
1
Reaction of box on the man.
(b)
6
Friction of feet on the floor.
(c)
4
Friction of the box on the floor.
(d)
2
Push of the man on the box.
(e)
3
Friction of the floor on the box.
(d)
5
Friction of the floor on the feet.
6
   End of Paper   
Setter: M.W. Leung
2