Science Questions for JHS 1
Section A - Objectives
1. Which of the following physical quantities is basic?A. Mass
B. Area
C. Volume
D. Density
2. Calculate the weight of an apple whose mass is 0.12 kg, if acceleration due to gravity is 10 metres per second square?
A. 120N
B. 12N
C. 1.2N
D. 0.12N
3. What is the difference between mass and weight?
The
A. Mass of a body is twice the weight.
B. Weight of a body is constant but its mass varies.
C. Mass of a body varies but its weight does not.
D. Weight of a body varies but its mass does not.
4. The volume of water in a container rises when a piece of stone is put into the container. The change in the volume of water is equal to the
A. Mass of the container
B. Mass of the stone
C. Density of the stone
D. Volume of the stone
5. The temperature of 20°C on the Kelvin scale i…
A. 293 K
B. 283 K
C. 273 K
D. 236 K
6. The engineer’s calipers is used to
A. Measure distances on the ground
B. Measure the internal diameter of tubes
C. Measure distances on solid objects
D. Measure the diameter of wires
7. The meniscus of a liquid refers to the
A. Viscosity of a liquid
B. Volume of a liquid
C. Curved surface of a liquid
D. Capillarity of a liquid in a glass tube
8. Which of the following statements is true about accurate measurement of things?
A. It prevents overdose of medicine
B. It encourages cheating
C. It increases wastage
D. It triggers fighting
9. If the weight of your science teacher is 750N, calculate is masss. (Take g = 10m/s2)
A. 760kg
B. 740kg
C. 75kg
D. 7.5kg
10. Electric current is measured in
A. Volts
B. Amperes
C. Candela
D. Hertz
11. The instrument used for measuring a very high temperature of about 800°C is the
A. thermometer
B. Pyrometer
C. Photometer
D. Barometer
12. One hectare is equivalent to …
A. 100 m2
B. 1,000 m2
C. 10,000 m2
D. 100,000 m2
13. The vernier callipers is used to…
A. Measure the diameter of wires
B. Measure distances on the ground
C. Measure distances on solid objects
D. Measure the internal diameter of tubes
Use the information below to answer questions 14 and 15.
Water in a measuring cylinder has an initial volume of 22cm3. When a small stone was dropped in the measuring cylinder the water level rose by 12cm3.
14. What is the final level of water in the measure cylinder after the small stone was dropped?
A. 10 cm3
B. 24 cm3
C. 34 cm3
D. 10 cm3
15. Determine the volume of the stone
A. 12 cm3
B. 22 cm3
C. 34 cm3
D. 10 cm3
Section B
1. (a) What is ‘matter’(b) Name two different particles of matter which carry
(i) a negate``ve charge
(ii) a positive charge
(iii) no charge
(c.) (i) If your teacher’s mass is 65kg , what is his weight? (g = 10 m/s2 )
(ii) Calculate the mass of a piece of rock which weighs 2560.19N (g = 10 m/s2 )
2. (a) Explain the term ‘soil’.
(b) List three benefits of soil in agriculture.
(c) Mention three benefits of soil structure to crop farmers.
(d) List three bad effects of soil living organisms in agriculture
(e) Briefly explain why a ship, which is built with different metals, floats on the sea while a piece of metal dropped into the sea sinks.
3. (a) Define evaporation
(b) Give three differences between evaporation and boiling.
(c) In what way does melting differ from melting point?
(d) Briefly explain each of the following terms as used in the study of living things:
(i) Reproduction
(ii) Excretion
(iii) Respiration
(iv) Heredity
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