Thermal Energy III - JSS2 Basic science Past Questions and Answers - page 1
1
What is convection?
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A
A process of heat transfer in fluids
B
A process of heat transfer in solids
C
A process of heat transfer through electromagnetic waves
D
A process of heat transfer through direct contact
2
Where does convection primarily occur?
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A
Only in solids
B
Only in gases
C
Only in liquids
D
In fluids (liquids and gases)
3
What happens to warmer particles in convection?
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A
They sink
B
They rise
C
They remain stationary
D
They disappear
4
How do cooler particles behave in convection?
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A
They rise
B
They sink
C
They evaporate
D
They condense
5
What analogy can be used to explain convection?
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A
A burning candle
B
A boiling pot of water
C
A metal rod heating up
D
A block of ice melting
6
Where are convection currents crucial for heat distribution?
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A
Only in the atmosphere
B
Only in oceans
C
In both the atmosphere and oceans
D
Only in solids
7
What role do convection currents play in weather patterns?
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A
No role
B
Minor role
C
Major role
D
Only in extreme weather
8
How does convection help in redistributing heat in the Earth's atmosphere and oceans?
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9
Can you provide an everyday example of convection and explain how it works?
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10
Why is understanding convection important in various fields like meteorology and oceanography?
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