The Atmosphere And Causes Of Weather Question Preview (ID: 18216)
Winds The Causes.
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Narrow belts of winds that can reach 400 km/h are called
a) jet streams.
b) jet currents.
c) convection currents.
d) convection streams.
What is the atmosphere?
a) the air we breathe
b) carbon dioxide
c) a mixture of gases
d) mostly oxygen
About how much of Earth’s atmosphere is oxygen?
a) 20%
b) 78%
c) 35%
d) 50%
Wind occurs because of differences in
a) latitude.
b) air pressure.
c) nitrogen levels.
d) humidity.
What causes local winds?
a) global winds
b) trade winds
c) easterlies
d) temperature differences
Wind occurs because air tends to move from regions of higher to lower
a) pressure.
b) altitude
c) nitrogen levels.
d) humidity.
Air pressure decreases as what increases?
a) altitude
b) radiation
c) water vapor
d) pollution
Which of the following shows the composition of Earth’s atmosphere?
a) nitrogen: 68%; oxygen: 21%; other gases: 11%
b) nitrogen: 78%; oxygen: 11%; other gases: 11%
c) nitrogen: 78%; oxygen: 21%; other gases: 1%
d) nitrogen: 98%; oxygen: 1%; other gases: 1%
Troposphere is...
a) densest layer, contains almost 90% of the atmosphere’s mass, where we live
b) layered gases, thin air, little moisture
c) coldest layer, temperature decreases as altitude increases
d) lack of particle density, little thermal energy transfer
What causes differences in air pressure around the Earth?
a) Warm air rises at the equator and cold air sinks at the poles.
b) Warm air sinks at the equator and cold air rises at the poles.
c) Warm air rises at the equator and cold air rises at the poles.
d) Cold air rises at the equator and warm air sinks at the poles.
Narrow belts of winds that can reach 400 km/h are called
a) jet streams.
b) jet currents.
c) convection currents.
d) convection streams.
What causes differences in air temperatures at different altitudes?
a) mainly the way gases absorb solar energy
b) mainly the way moisture moves through the atmosphere
c) mainly the way gases radiate light
d) mainly the way air radiates solar energy
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