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Atmosphere
Test Description: Atmosphere
Instructions: Answer all questions to get your test result.
1) Which two layers do airplanes fly in?
A
Troposphere and Stratosphere
B
Stratosphere and Mesosphere
C
Mesosphere and Thermosphere
D
Thermosphere and Exosphere
2) Which layer do satellites orbit?
A
Exosphere
B
Troposphere
C
Stratosphere
D
Thermosphere
3) Which layer contains the ozone layer?
A
Mesosphere
B
Troposphere
C
Stratosphere
D
Thermosphere
4) Which layer contains 75-80% of all molecules (densest layer)?
A
Mesosphere
B
Thermosphere
C
Stratosphere
D
Troposphere
5) Most life exists in which layer?
A
Mesosphere
B
Exosphere
C
Troposphere
D
Stratosphere
6) Which layer protects us from meteors?
A
Stratosphere
B
Exosphere
C
Troposphere
D
Mesosphere
7) Which layer has the hottest molecules?
A
Mesosphere
B
Stratosphere
C
Thermosphere
D
Troposphere
8) Which layer contains the least number of molecules (least dense layer)?
A
Mesosphere
B
Stratosphere
C
Exosphere
D
Troposphere
9) Which layer contains the ionosphere that cause the auroras?
A
Thermosphere
B
Stratosphere
C
Exosphere
D
Mesosphere
10) Which answer lists the order of the layers of the atmosphere from closest to Earth to farthest?
A
Troposphere--Stratosphere--Mesosphere--Thermosphere--Exosphere
B
Stratosphere --Mesosphere--Thermosphere--Troposphere--Exosphere
C
Mesosphere--Thermosphere--Exosphere--Troposphere--Stratosphere
D
Thermosphere--Stratosphere--Mesosphere--Troposphere--Exosphere
11) Which layer protects humans from most harmful UV rays from the Sun?
A
Exosphere
B
Clouds
C
Ozone Layer
D
Jet Stream
12) Which two gases are the most abundant in the Earth's atmosphere?
A
Nitrogen and oxygen
B
Carbon dioxide and oxygen
C
Oxygen and hydrogen
D
Carbon dioxide and hydrogen
13) What is the definition of atmosphere?
A
A mixture of gases that surround a planet, held by gravity.
B
The measure of how tightly packed molecules are in a given space
C
The force of air that pushes on an object
D
The height above sea level
14) True or False: The atmosphere is a mixture of elements and compounds.
A
True
B
False
15) The layers of the atmosphere are classified according to changes in...
A
Altitude and air quality
B
Humidity and temperature
C
Temperature and air pressure
D
Air pressure and oxygen
16) Which statement best describes the molecules in the exosphere?
A
The molecules are tightly packed.
B
The molecules are spread far apart.
17) What is the definition of air pressure?
A
A mixture of gases that surround a planet, held by gravity.
B
The height above sea level
C
The force that air exerts on all objects
D
How tightly packed molecules are in a given space
18) What percentage of the Earth's atmosphere is made of Nitrogen?
A
78%
B
1%
C
21%
19) What percentage of Earth's atmosphere is made of Oxygen?
A
78%
B
1%
C
21%
20) What percentage of the Earth's atmosphere is made of other gases?
A
78%
B
1%
C
21%
*select an answer for all questions
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