Kwun Tong Government Secondary School
S1 2nd Term Test, 1999-2000
Integrated Science
Class : S.1 ( ) Max. Mark : 100
Name : ______Date : 10-5-2000
Class No. : ______Time : 8:40 - 9:15a.m
I True or False (10%)
Study each of the following statements. Put a Ö in the box if the statement is true or an ´ if it is false.
1. A dynamo can change potential energy to electrical energy.
2. A steam engine can change the chemical energy in water into kinetic energy.
3. Geothermal energy is the energy from the sun.
4. There is no hydroelectric power station in Hong Kong.
5. The problem arising from the use of oil and coal is the release of dangerous radiation in case of an accident.
6. Matter is the liquid which makes up the world and everything in space.
7. Using the microscope you can see some scattered bright air particles being hit by the smoke particles.
8. There are spaces between solid particles but not gas particles and liquid particles.
9. Gases can be compressed but liquids and solids cannot be compressed.
10. Cold air has a higher density than hot air.
II Fill in the blanks (20%)
1. A path by which energy is transferred from one living thing to another is called a (a)______.
2. Coal and oil are produced from the remains of dead plants and animals buried millions of years ago. Coal and oil are thus called (b) ______fuels.
3. (c)______is an example of nuclear fuels.
4. Density is (d) ______per unit (e) ______.
5. A (f) ______strip bends when it is heated. It is made of two different metals.
6. We can observe (g)______motion using (h)______apparatus under microscope.
7. Substances (i)______on heating and (j)______on cooling.
III Matching (10%)
Match Column I with Column II
Column I / Column II1. sun
2. wind energy
3. hydroelectric power
4. iodine
5. diffusion / A. wildlife destruction, floods
B. brown gas is formed
C. in all directions
D. clean & no pollution
E. secondary source of energy
F. primary source of energy
G. purple gas is formed
IV Multiple Choices (20%)
1 Which of the followings is NOT a source of energy?
A. Wind
B. Coal
C. Rock
D. Sun
2 Alcohol is burnt to produce steam in order to turn the wheel. The bulb then lights up.Which of the following shows the correct energy change?
A. kinetic energy ¾® electrical energy ¾® heat and light energy
B. heat energy ¾® kinetic energy ¾® electrical energy
¾®heat and light energy
C. chemical energy ¾® heat energy ¾® kinetic energy
¾®heat and light energy
D. chemical energy ¾® heat energy ¾® kinetic energy
¾® electrical energy ¾® heat and light energy
3 Some brown gas is poured into a gas jar from a conical flask.
After some time, the gas
A. takes the same volume as before.
B. keeps the same shape as the conical flask.
C. does not enter the gas jar.
D. fills up the gas jar.
4 40 cm3 of sand is poured into 40 cm3 of peas. After mixing, the volume is less than80 cm3. It is because
A. the peas are compressed.
B. the sand slips into the spaces between the peas.
C. the peas are broken down.
D. the peas are softer than the sand.
5 In which of the following cases will the ink move the greatest distance after 2 days?
6 Small pieces of dry ice (solid carbon dioxide) are put into a balloon. After some time, the result as shown in the diagram is obtained.
It is because
(1) the dry ice has changed into gas.
(2) carbon dioxide gas has a lower temperature.
(3) the dry ice has chemical change.
(4) gas needs more space than solid.
A. (1) and (2) only
B. (1) and (3) only
C. (1) and (4) only
D. (2) and (4) only
7 When the beaker is turned upside down, the paper does not drop down. This is because
A. the paper sticks to the beaker.
B. the beaker sticks to the paper.
C. the air pressure holds the paper.
8 Which of the following is NOT a safety rule in using town gas?
D. the water pressure holds the paper.
A. Do not store too much at home
B. Open the window wide when using it
C. Ask suppliers to check the equipment regularly
D. Do not allow children to play near cookers and heaters
9 Which of the following forms of energy are “renewable”?
I solar energy
II wind energy
III tidal energy
A. I and II only
B. I and III only
C. II and III only
D. I , II and III
10 When an iron rod is heated, the iron particles will:
A. get bigger
B. get smaller
C. move closer together
D. move farther apart
V Short Questions (40%)
1. Suggest THREE ways to save energy. (9%)
2. Jimmy pumps air into a football. Use particle theory to explain why the air pressure inside the football increases. (6%)
3. A fresh hen's egg sinks in water. Now add salt to the water and stir carefully.
a What happens?(2%)
b Explain briefly. (4%)
4. Arrange the following pictures in the correct order to tell an energy story. (5%)
5. A pupil burns some bread in a burning spoon as shown. (6%)
(a) What energy does the bread have? (1%)
(b) What is the energy change when the bread is burnt? (3%)
(c) After burning, what is left in the spoon? (1%)
(d) Will the same energy change happen if rice is used instead of bread? (1%)
6 A metal can half filled with water is heated strongly. The can is then stoppered and
cooled with tap water quickly. (8%)
(a) Draw the result in the answer sheet. (2%)
(b) Explain the result briefly. (6%)
End of Paper
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