Download Half-yearly Exam

KWUN TONG GOVERNMENT SECONDARY SCHOOL
Half-yearly Examination 2014-2015
Integrated Science
Class
: S.1 (
)
Max. Mark
Name
: _______________________
Date
Class No.: ________
Time
: 100
: 21-1-2015
: 8:45 – 9:45am
Answer all of the questions on the answer sheet provided.
(A)
Multiple Choice (20 marks)
1. Scientists cannot make us live forever is because of
(I) scientific discovery.
(II) scientific limitation.
A. (I) only
B. (II) only
C. (III) only
(III) scientific invention.
D. (I) and (III) only
2. In which situations should you wear safety goggles in the laboratory?
(I) Heating 100 cm3 water in a beaker.
(II) Dissolving sugar in water.
(III) Handling some corrosive liquids which may splash out.
A. (I) and (II) only
B. (I) and (III) only
C. (II) and (III) only
D.
All of the above
3. A chemical is toxic and flammable. Which hazard warning labels should be put on its container?
(I)
A.
(II)
(I) and (II) only
B.
(III)
(I) and (III) only
C.
(IV)
(II) and (III) only
D. (III) and (IV) only
4. What is the volume of the wooden cork?
A.
12 cm3
B.
32 cm3
C.
44 cm3
D.
88 cm3
5. Katie was cut by a broken beaker in the laboratory, she should
A. clean the bench and the floor by herself at once.
B. pick up all the broken glass pieces by a towel at once.
C. report to the teacher at once and wash the affected area with running water.
D. call police at once.
6. What should we do at once if a Bunsen burner strikes back?
A. We should put out the fire.
B. We should keep the air hole widely open.
C. We should turn off the gas tap.
D. We should close the air hole.
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7. Which of the following apparatus is the most accurate for measuring 5 mL of a solution?
A. 50 mL beaker
B. 10 mL measuring cylinder
C.
100 mL beaker
D.
500 mL measuring cylinder
8. Which of the following statements is INCORRECT?
A. 1 kilometre is equal to 1000 metres.
B.
C. 1 milligram is equal to 0.001 grams.
D.
1 kilogram is equal to 1000 grams.
1 centimetre is equal to 100 metre.
Questions 9 and 10 are about the investigation of how different liquids oppose the falling motion of an object.
9. In her investigation, she plans to release a marble into three measuring cylinders containing different
liquids. The experimental set-ups are shown below.
corn oil
water
honey
I
II
III
Which of the following is/are the variable(s) that Tammy will change?
(1) Volume of the liquid
(2) Type of liquid
(3) Temperature of liquid
A. (1) only
B. (2) only
C. (1) and (3) only
D. (2) and (3) only
10. Which of the following is the variable that Tammy will measure?
A. The weight of the marble
B. The rise in the liquid level when the marble reaches the bottom of the cylinder
C. The change in the weight of the set-up
D. The time taken for the marble to fall to the bottom of the cylinder
11. Which of the following letters is the correct image of the letter ‘p’ observed under the microscope?
A. p
B. b
C. d
D. q
12. Which of the following structures is NOT found in a cell of an onion scale leaf?
A. Nucleus
B. Cell wall
C. Vacuole
D. Chloroplast
13. Which part of the female reproductive system that produces eggs?
A. Vagina
B. Ovary
C. Uterus
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D.
Oviduct
14. The diagram below shows the drawing of some human cheek cells.
X
Which of the following statements about structure X is/are correct?
(1) It contains genetic materials.
(2) It can be found in animal cells only.
(3) It is the site for carrying out photosynthesis.
A. (1) only
B. (2) only
C. (1) and (2) only
D. (2) and (3) only
15. The diagram below shows some sperms that swim towards an egg and try to fuse with it.
Which of the following statements is/are correct?
(1)
(2)
(3)
A.
If the egg is fertilized by a sperm, no other sperm can enter the egg.
The fusion of the sperm and the egg takes place in the ovary.
Those sperms that cannot fuse with the egg will stay in the uterus until the release of another egg.
(1) only
B. (3) only
C. (1) and (2) only
D. (2) and (3) only
16. Which of the following cannot be found in the urethra of a male?
A. Semen
B. Sperm
C. Egg
D.
Urine
17. The usual time of a human embryo in the mother’s body is
A. 10 weeks.
B. 17 weeks.
C. 38 weeks.
D.
50 weeks.
18. When there is fertilization, it means
A. two eggs joining together.
C. two sperms joining together.
B.
D.
a single egg joining with any cell.
a sperm joining with an egg.
19. Which of the following statements about identical twins are INCORRECT?
A. They are of different sexes.
B. They have the same genetic materials.
C. They look like each other.
D. They develop from a single fertilized egg.
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20. Why may some nurses hit the babies’ feet gently after they are born?
A. To wake them up.
B. To make them laugh.
C. To make them cry and take the first breath.
D. To make them talk.
(B) True or False Statements (10 marks)
Write 'T' for a true statement and 'F' for a false one
1. The structure of DNA is one of the examples of discoveries in science.
2. The knowledge about micro-organisms helps scientists find ways to prevent diseases.
3. When using a Bunsen burner, we should turn on the gas tap before lighting a match.
4. To investigate whether sugar will dissolve faster in hot water than in cold water, the variable of water
temperature should be kept the same.
5. Making repeated measurements in experiments helps to reduce errors.
6. When using the microscope, we always start with the high power.
7.
8.
9.
10.
All cells have cell membrane.
The number of cells of an organism is increased by cell division.
The urinary bladder is not part of the reproductive system.
Implantation takes place at the uterus.
(C)
Fill in the blanks (20 marks)
1. At school, we usually do experiments in a (a) ____________.
2. We can understand how the natural world works through studying (b) __________.
3. Scientists make (c) _____________ by relying on different senses. For example, we use eyes to (d)
_______, ears to (e) ________.
4.
5.
6.
7.
When chemicals spill on the skin, you should wash it with (f) __________ _________ at once.
We should close the (g) _______ __________ before lighting the Bunsen burner.
We can use a (h) ___________ to transfer a small amount of solutions.
When we are reading the volume of liquid using a measuring cylinder, we should take the reading at the
bottom of the (i) ______________.
8. In a fair test, we should only change the (j) ___________ variable and keep all other variables (k) ______
________.
9. In a scientific investigation, the last step is analyzing (l) _________ and drawing a (m) _____________.
10. (n) _____________ is the apparatus used to observe cells and other tiny objects.
11. The total magnification of an object seen under a microscope is the product of the magnifications of the
(o)________________ and the (p)_________________.
12. (q) ________ __________ supports, protects and gives shape to a plant cell.
13. (r) ____________ reproduction involves one parent only. It does not involve (s) __________ cells.
14. Just before giving birth, a pregnant woman experiences pain in the abdomen because of the frequent and
strong contraction of the muscles of her (t) _____________.
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(D) Short Questions (50 marks)
1. The diagram below shows some students doing experiments. Look at the diagram carefully and circle 5
mistakes of the students. (5 marks)
2.
The following shows some world records. Fill in the blanks with the correct symbols or numbers. (5 marks)
(a) 1000-metre race: (for females) 2 ______________ 29______________ = ______________ s
(b) Shot put: (for males) 23.12 ______________ with a metal ball of 7.26 ______________
3.
4.
The table below shows the uses of some apparatus. Write down the name of apparatus and draw sectional
diagrams. (6 marks)
Uses
Apparatus
Sectional diagram
For heating a substance
(a)
(b)
For containing a small amount of (c)
liquid
(d)
For protecting
overheating
(f)
the
bench
from (e)
Fill in the following table to compare the Bunsen flames. (6 marks)
Air hole
Colour of flame Type of flame
Shape of flame
Open
(a)
Non-luminous
(b)
Noise level
(c)
Hotness of flame
Very hot
closed
(f)
Not very hot
(d)
Luminous
(e)
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5.
Peter would like to investigate if hot water cools down faster under windy conditions. Identify different
types of variables in this investigation. Fill in the table with letters. (6 marks)
[A : controlled variables
B: independent variable
C: dependent variable]
Variable
Type of variable
(a) Container of the hot water
(b) Volume of hot water
(c) With or without a fan
(d) Final temperature of water
(e) Temperature of air when experiment starts
(f) Temperature of water when experiment starts
6. Betty carries out an experiment to study the dissolving of sugar in water. Her experimental results are
shown in the table below.
Variables
Beaker A
Beaker B
Beaker C
Temperature of water
50 °C
70 °C
70 °C
Volume of water
Maximum weight of sugar that can dissolve
in water
50 cm3
50 cm3
80 cm3
2.1 g
3.3 g
5.3 g
(a) By comparing beakers A and B, which variable that affects the dissolving of sugar in water can Betty
study? (1 mark)
(b) By comparing beakers B and C,which variable that affects the dissolving of sugar in water can Betty
study? (1 mark)
(c) Can Betty draw reliable conclusions by comparing the results of beakers A and C? Explain your
answers. (3 marks)
[Total : 5 marks]
7.
Jenny is learning to use a microscope to observe an animal cell specimen. The following three diagrams
show the images she observed under the microscope with different magnifications.
A
(a)
B
C
If Jenny followed the correct steps of using a microscope, write the order of images she observed while
using the microscope. (3 marks)
(b)
If she used an eyepiece of magnification 10×, and the magnifications of the objectives on the microscope
were 5×, 10× and 50× respectively, what are the total magnifications of the three images? (3 marks)
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(c)
(d)
If Jenny wanted to move point Y, to the centre of the field of view, to which direction should she move the
slide? (1 mark)
Draw and label this animal cell speceimen. (4 mark)
[Total :11 marks]
8.
The diagram below shows W, which is formed about four months after fertilization, developed inside the
uterus.
(a)
(i) Name structure X. (1 mark)
(ii) Suggest TWO materials that are carried to W along structure X. (2 marks)
(iii) Suggest ONE material that is carried away from W along structure X. (1 mark)
What is W called? (1 mark)
What determines (決定) the characteristics of W? (1 mark)
(b)
(c)
[Total : 6 marks]
END OF PAPER
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