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Grade 6 Weather Final Review B
Test Description: Final Review
Instructions: Answer all questions to get your test result.
1) The ozone layer protects living things on Earth from
A
carbon dioxide.
B
ultraviolet radiation.
C
visible light.
D
infrared rays.
2) Most air pollution comes from
A
forest fires.
B
pollen.
C
burning fossil fuels.
D
volcanic eruptions.
3) Nearly half of the pollution caused by burning fossil fuels comes from
A
home furnaces.
B
factories.
C
motor vehicles.
D
power plants.
4) One thing people in the United States could do to reduce air pollution is
A
use more public transportation.
B
build more factories.
C
burn more fossil fuels.
D
drive their cars more.
5) The greenhouse effect is
A
a gradual increase in the temperature of the atmosphere.
B
the reflection of solar energy into the atmosphere.
C
the absorption of energy by clouds.
D
the process by which gases hold heat in the atmosphere.
6) The freezing point of pure water on the Celsius scale is
A
100°C.
B
100°C.
C
0°C.
D
32°C.
7) Heat transfer between two substances that are in contact is called
A
conduction.
B
thermal energy.
C
radiation.
D
convection.
8) Heat from the sun reaches you by
A
conduction.
B
convection.
C
radiation.
D
light emissions.
9) Convection takes place because
A
warm and cold air have the same density.
B
cold air is less dense than warm air.
C
cold air is more dense than warm air.
D
warm air is more dense than humid air.
10) Winds are caused by differences in
A
turbulence.
B
air pressure.
C
humidity.
D
precipitation.
*select an answer for all questions
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