Indiana Science Grade 6

Chapter 3: Atmosphere

Atmosphere

1.
What preceded the growth and survival of green plants on Earth?
A)human life
B)the formation of the solar system
C)the formation of severe weather
D)the formation of an ozone layer
2.
What would happen if Earth had no atmosphere?
A)Earth would not have days.
B)The days would be hot and the nights would be cold.
C)The days would be cold and the nights would be hot.
D)Earth would not have nights.
3.
What have CFCs done to Earth and its atmosphere?
A)all answers are correct
B)They have caused the number of cancer cases to rise.
C)They have caused more ultraviolet radiation to reach Earth.
D)They have created a hole in the ozone layer.
4.
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 one oxygen from ozone and leaves a two- atom oxygen molecule.
C)A chlorine atom from a CFC combines with two oxygen atoms from ozone and leaves an oxygen atom.
D)A CFC combines with a three-atom oxygen molecule.
5.
Where can CFCs be found?
A)air conditioners
B)all answers are correct
C)aerosol sprays
D)refrigerators
6.
What is the outermost layer of the atmosphere called?
A)thermosphere
B)stratosphere
C)exosphere
D)mesosphere
7.
What is it called when water changes from gas to liquid?
A)condensation
B)melting
C)evaporation
D)freezing
8.
Conduction is the transfer of heat through __________.
A)empty space
B)radiation
C)thoughts
D)touch
9.
What's the difference between ozone and the oxygen you breath?
A)Ozone is made of two atoms of oxygen and the oxygen you breath is made of three.
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)They're made of totally different atoms.
10.
What is the most abundant gas in Earth's atmosphere?
A)carbon
B)nitrogen
C)hydrogen
D)oxygen
11.
How many layers does Earth's atmosphere have?
A)five
B)six
C)seven
D)four
12.
What two forms of heat transfer help create a sea breeze?
A)convection and conduction
B)convection and radiation
C)radiation and conduction
D)radiation and recycling
13.
Heat flows from __________.
A)high to low temperature
B)medium to high temperature
C)same temperature to same temperature
D)low to high temperature
14.
How have humans altered the composition of Earth's atmosphere?
A)They have made the atmospheric temperature drop.
B)They have polluted it with carbon dioxide gas.
C)They have polluted it with excess ozone.
D)They have made the atmospheric pressure drop.
15.
Force exerted on an area is called __________.
A)pressure
B)gravity
C)temperature
D)mass
16.
How does the atmosphere benefit Earth?
A)It protects Earth from cold air.
B)It protects Earth from the Sun's harmful rays.
C)It protects Earth from other planets.
D)It creates water.
17.
What form of energy transfer heats Earth?
A)conduction
B)convention
C)recycling
D)radiation
18.
Within which layer of the atmosphere do you find rain, snow, and clouds?
A)mesosphere
B)stratosphere
C)troposphere
D)thermosphere
19.
Why are the thermosphere and exosphere the warmest of the atmospheric layers?
A)because the underlying mesosphere keeps the warm air there
B)because they are closest to the Sun
C)because the air pressure is too great
D)because of the gases trapped in these layers
20.
The hydrosphere, which consists of all of Earth's water, is maintained __________.
A)by removing water from the atmosphere
B)by addition of water to the atmosphere
C)by recycling water in the atmosphere
D)by the clouds in the atmosphere
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