Glencoe Earth Science

Chapter 15: Atmosphere

Atmosphere

1
What have CFCs done to Earth and its atmosphere?
A)They have caused the number of cancer cases to rise.
B)They have created a hole in the ozone layer.
C)all answers are correct
D)They have caused more ultraviolet radiation to reach Earth.
2
Why are there fewer molecules of air up in the mountains?
A)because air pressure increases as you go higher
B)because air pressure is the same throughout all layers of the atmosphere
C)because air is too heavy
D)because air pressure decreases as you go higher
3
What is it called when water changes from gas to liquid?
A)freezing
B)melting
C)condensation
D)evaporation
4
What is the most abundant gas in Earth's atmosphere?
A)hydrogen
B)nitrogen
C)oxygen
D)carbon
5
Where can CFCs be found?
A)refrigerators
B)air conditioners
C)aerosol sprays
D)all answers are correct
6
What causes a shooting star?
A)a meteor in the mesosphere
B)a comet in the stratosphere
C)a meteor in the troposphere
D)a comet in the thermosphere
7
Which layer of the atmosphere is named after its high temperature?
A)stratosphere
B)troposphere
C)mesosphere
D)thermosphere
8
What preceded the growth and survival of green plants on Earth?
A)the formation of severe weather
B)the formation of an ozone layer
C)human life
D)the formation of the solar system
9
How have humans altered the composition of Earth's atmosphere?
A)They have polluted it with carbon dioxide gas.
B)They have made the atmospheric temperature drop.
C)They have polluted it with excess ozone.
D)They have made the atmospheric pressure drop.
10
Why are the thermosphere and exosphere the warmest of the atmospheric layers?
A)because they are closest to the Sun
B)because of the gases trapped in these layers
C)because the underlying mesosphere keeps the warm air there
D)because the air pressure is too great
11
How do CFCs destroy ozone?
A)A CFC combines with a three-atom oxygen molecule.
B)A chlorine atom from a CFC combines with two oxygen atoms from ozone and leaves an oxygen atom.
C)A carbon atom from a CFC combines with one oxygen from ozone and leaves a two-atom oxygen molecule.
D)A chlorine atom from a CFC combines with one oxygen from ozone and leaves a two- atom oxygen molecule.
12
How is the troposphere warmed?
A)The stratosphere warms it.
B)The gases in the troposphere absorb heat from the Sun.
C)The troposphere absorbs sunlight directly.
D)The Sun warms Earth's surface, which warms the air above it.
13
Which layer of the atmosphere contains the ozone layer?
A)thermosphere
B)exosphere
C)stratosphere
D)troposphere
14
What is the outermost layer of the atmosphere called?
A)thermosphere
B)stratosphere
C)exosphere
D)mesosphere
15
What would happen if Earth had no atmosphere?
A)The days would be cold and the nights would be hot.
B)Earth would not have nights.
C)Earth would not have days.
D)The days would be hot and the nights would be cold.
16
Force exerted on an area is called __________.
A)temperature
B)gravity
C)pressure
D)mass
17
The hydrosphere, which consists of all of Earth's water, is maintained __________.
A)by removing water from the atmosphere
B)by recycling water in the atmosphere
C)by addition of water to the atmosphere
D)by the clouds in the atmosphere
18
What form of energy transfer heats Earth?
A)recycling
B)conduction
C)radiation
D)convention
19
Heat flows from __________.
A)high to low temperature
B)low to high temperature
C)same temperature to same temperature
D)medium to high temperature
20
How does the atmosphere benefit Earth?
A)It creates water.
B)It protects Earth from the Sun's harmful rays.
C)It protects Earth from other planets.
D)It protects Earth from cold air.
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