Class
: S.2 (
KWUN TONG GOVERNMENT SECONDARY SCHOOL
FIRST TERM TEST, 2004-2005
Form Two Integrated Science
)
Date
: 1-12-2004
Name
: _______________________
Class No.: ________
Time
Full Mark
: 8:35-9:05am
: 50
ANSWER ALL THE QUESTIONS ON THE ANSWER SHEET PROVIDED
(A)
Multiple Choice (10 marks)
1.
During photosynthesis, light energy is changed into
A. sound energy.
B. heat energy. C. chemical energy.
2.
D.
kinetic energy.
The following diagram shows a food chain. Point out which living thing is the producer and
which is the secondary consumer.
A.
B.
3.
4.
Producer
Rat
Owl
Secondary consumer
Owl
Wheat
C.
D.
Producer
Wheat
Wheat
Secondary consumer
Owl
Rat
What are the possible results of global warming?
(1) There will be more typhoons in summer.
(2) The sea level rises due to melting of ice at the Poles.
(3) Air temperature increases.
A. (1) and (2) only B. (2) and (3) only
C. (1) and (3) only
D.
(1), (2) and (3)
Which of the following are chemical reactions?
(1) Photosynthesis (2) Respiration (3) Filtration
(4) Distillation
A. (1) and (2) only
B. (2) and (3) only C. (1) and (4) only D.
(3) and (4) only
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5.
Which of the following processes does NOT release carbon dioxide into the air?
A. burning town gas
B. baking bread in an oven
C.
6.
respiration in animals
C.
smoking
Which of the following can be used to test for nitrogen?
(1) Glowing splint (2) Burning splint
(3) Lime water
A. (1) only
B. (2) only
C. (2) and (3) only
D.
7.
A fat boy wants to lose weight. Which of the following diets should he take?
A. Vegetable, fruit, bread
B. Cheese, steak, hamburger
C. Ice-cream, potato, beacon
D. Ham, fried chicken, sausage
8.
Over 95% of the air is made up of 2 gases. They are
A. nitrogen and carbon dioxide
B. inert gases and nitrogen
C. nitrogen and oxygen
D. oxygen and water vapour
9.
Which part of a plant takes in carbon dioxide during photosynthesis?
A. leaf
B. flower
C. root
D.
10.
None of them
seed
The possible ways to avoid global warming are
(1) using fewer fossil fuels.
(2) cutting fewer trees.
(3)
A.
planting trees in the areas in which a lot of trees have been destroyed.
(1) and (2) only B. (1) and (3) only
C. (2) and (3) only
D.
(1), (2) and (3)
(B)
True or False Statements (5 marks)
Write ‘T’ for a true statement and ‘F’ for a false one.
1. The most abundant gas in breathed air is nitrogen.
2. Carbon dioxide and food are products of photosynthesis.
3. Respiration takes place in plants while breathing takes place in animals.
4. A glowing splint relights when it is put into a tube of carbon monoxide.
5.
Nicotine causes addiction to cigarette smoking.
(C)
Fill in the blanks (10 marks)
1. During breathing, we take in (a) ____
and give out (b)
.
2. If a liquid changes the colour of (c)
________
paper from blue to (d)
_ ,
it is water.
3. The expected result of the test of a certain chemical is called the (e)
_ result.
4. We can test whether a plant has carried out photosynthesis or not by testing its leaf for (f) ____
using (g)
solution.
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5.
6.
(h) _______________ can show the feeding relationship among living things. Animals which
feed on green plants are (i) ________________.
(j) ___________________ means breathing in the smoke from other’s cigarettes.
(D)
Short questions (25 marks)
1.
The diagram below shows the step of heating a leaf in alcohol during the test for starch. Point
out one mistake as seen in the diagram and give a reason. (4 marks)
2.
If the rubber tubing connecting to the Bunsen burner has a hole and catches fire, what should
we do to put out the fire? Give two methods and write down which factor of fire triangle is
removed in each method. (8 marks)
3 (a) If a smoker breathes out smoke at a white cloth, some yellow stain appears on the cloth.
What is the substance that leaves yellow stain on the cloth? (2 marks)
(b) Give one disease that may be caused by the above substance. (2 marks)
(c) Suggest one method to quit smoking. (2 marks)
(d) Name a chemical that can be used to test for carbon dioxide. (2 marks)
(e) The smoke is collected in a syringe and passes through a chemical which can test for the
presence of carbon dioxide in the smoke. Draw a diagram to show how to test for carbon
dioxide in the smoke with the following apparatus. (3 marks)
A test-tube containing the A syringe to collect smoke
A bent glass tube
chemical to test for carbon given out by the man
dioxide
(f)
What is the change of the chemical after smoke has passed through it? (2 marks)
END OF PAPER
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