Earth Science: The Air Around You, Book I

Section 1: Earth's Atmosphere

Section 1 Self-Check Quiz-Eng.

1
What would happen if Earth had no atmosphere?
A)The days would be cold and the nights would be hot.
B)The days would be hot and the nights would be cold.
C)Earth would not have days.
D)Earth would not have nights.
2
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 cold air.
D)It protects Earth from other planets.
3
How many layers does Earth's atmosphere have?
A)six
B)five
C)four
D)seven
4
What preceded the growth and survival of green plants on Earth?
A)the formation of the solar system
B)the formation of an ozone layer
C)the formation of severe weather
D)human life
5
What is the most abundant gas in Earth's atmosphere?
A)oxygen
B)hydrogen
C)nitrogen
D)carbon
6
How have humans altered the composition of Earth's atmosphere?
A)They have polluted it with carbon dioxide gas.
B)They have polluted it with excess ozone.
C)They have made the atmospheric temperature drop.
D)They have made the atmospheric pressure drop.
7
Within which layer of the atmosphere do you find rain, snow, and clouds?
A)troposphere
B)stratosphere
C)mesosphere
D)thermosphere
8
Which layer of the atmosphere contains the ozone layer?
A)troposphere
B)thermosphere
C)stratosphere
D)exosphere
9
What causes a shooting star?
A)a meteor in the troposphere
B)a meteor in the mesosphere
C)a comet in the stratosphere
D)a comet in the thermosphere
10
Which layer of the atmosphere is named after its high temperature?
A)thermosphere
B)mesosphere
C)troposphere
D)stratosphere
11
What is the outermost layer of the atmosphere called?
A)mesosphere
B)thermosphere
C)exosphere
D)stratosphere
12
Force exerted on an area is called __________.
A)pressure
B)gravity
C)temperature
D)mass
13
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
14
How is the troposphere warmed?
A)The troposphere absorbs sunlight directly.
B)The gases in the troposphere absorb heat from the Sun.
C)The stratosphere warms it.
D)The Sun warms Earth's surface, which warms the air above it.
15
Why are the thermosphere and exosphere the warmest of the atmospheric layers?
A)because the air pressure is too great
B)because the underlying mesosphere keeps the warm air there
C)because they are closest to the Sun
D)because of the gases trapped in these layers
16
What's the difference between ozone and the oxygen you breath?
A)They're made of totally different atoms.
B)Ozone is made of three atoms of oxygen, and the oxygen you breathe is made of two.
C)One is in gas form and the other is in liquid form.
D)Ozone is made of two atoms of oxygen and the oxygen you breath is made of three.
17
Where can CFCs be found?
A)refrigerators
B)air conditioners
C)aerosol sprays
D)all of the above
18
How do CFCs destroy ozone?
A)A carbon atom from a CFC combines with one oxygen from ozone and leaves a two-atom oxygen molecule.
B)A chlorine atom from a CFC combines with two oxygen atoms from ozone and leaves an oxygen atom.
C)A CFC combines with a three-atom oxygen molecule.
D)A chlorine atom from a CFC combines with one oxygen from ozone and leaves a two- atom oxygen molecule.
19
What have CFCs done to Earth and its atmosphere?
A)They have created a hole in the ozone layer.
B)They have caused more ultraviolet radiation to reach Earth.
C)They have caused the number of cancer cases to rise.
D)all of the above
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe