1.
Sea breeze occurs due to:
A
Radiation
B
Conduction
C
Convection
D
Evaporation
2.
Which color is the best absorber of heat?
A
White
B
Silver
C
Black
D
Yellow
3.
Geothermal energy is obtained from:
A
Sun
B
Wind
C
Earth’s interior
D
Water
4.
Convection occurs mostly in:
A
Solids
B
Liquids and gases
C
Vacuum
D
Metals only
5.
Heat transfer in room heaters mainly occurs by:
A
Conduction
B
Radiation
C
Convection
D
Evaporation
6.
Which material is a good conductor of heat?
A
Wood
B
Plastic
C
Glass
D
Copper
7.
Which mode of heat transfer does not require a medium?
A
Conduction
B
Convection
C
Radiation
D
Evaporation
8.
Global warming is mainly due to:
A
Deforestation
B
Greenhouse gases
C
Volcanoes
D
Ocean currents
9.
Heat always flows from:
A
Cold to hot body
B
Hot to cold body
C
Equal temperature bodies
D
Solid to liquid
10.
Heat flow in geothermal systems occurs mainly by:
A
Conduction
B
Convection
C
Radiation
D
Evaporation
11.
Land breeze occurs at:
A
Day
B
Night
C
Noon
D
Morning
12.
Main source of energy for greenhouse effect is:
A
Earth’s core
B
Sun
C
Moon
D
Fossil fuels
13.
Handles of cooking pans are made of wood because:
A
Wood is heavy
B
Wood is cheap
C
Wood is a poor conductor of heat
D
Wood looks good
14.
Black pots are used in solar cookers because:
A
They reflect heat
B
They absorb heat
C
They conduct electricity
D
They cool fast
15.
Which quantity depends on mass and specific heat capacity?
A
Temperature
B
Heat
C
Density
D
Pressure
16.
What is specific heat capacity?
A
Heat required to raise temperature of a body by 1°C
B
Heat required to raise temperature of unit mass by 1°C
C
Heat lost by a body
D
Heat gained by a body
17.
Which gas traps heat in atmosphere?
A
Oxygen
B
Nitrogen
C
Carbon dioxide
D
Helium
18.
Which energy source is eco-friendly?
A
Coal
B
Oil
C
Geothermal
D
Gasoline
19.
Which phenomenon explains warming of Earth?
A
Conduction
B
Greenhouse effect
C
Convection
D
Reflection
20.
Geothermal energy is considered:
A
Non-renewable
B
Renewable
C
Polluting
D
Limited