4.4 The Athmosphere APES quiz
Which layer of the atmosphere contains the ozone layer, which absorbs most of the Sun’s harmful UV radiation?
A) Troposphere
B) Stratosphere
C) Mesosphere
D) Thermosphere
Which layer of the atmosphere is closest to Earth’s surface and contains most of our weather?
A) Exosphere
B) Mesosphere
C) Troposphere
D) Stratosphere
Which of the following best describes the temperature trend in the stratosphere?
A) Decreases with altitude
B) Remains constant
C) Increases with altitude
D) Fluctuates randomly
Which atmospheric layer has the highest density of air molecules?
A) Exosphere
B) Mesosphere
C) Stratosphere
D) Troposphere
Which layer of the atmosphere do auroras primarily occur in?
A) Mesosphere
B) Thermosphere
C) Stratosphere
D) Troposphere
The greenhouse effect is primarily associated with which layer of the atmosphere?
A) Mesosphere
B) Troposphere
C) Exosphere
D) Thermosphere
Which of the following gases is the most abundant in Earth’s atmosphere?
A) Oxygen
B) Carbon Dioxide
C) Argon
D) Nitrogen
Which layer of the atmosphere is characterized by the coldest temperatures?
A) Troposphere
B) Stratosphere
C) Mesosphere
D) Thermosphere
Which gas in the atmosphere is primarily responsible for absorbing harmful ultraviolet radiation?
A) Methane
B) Nitrous Oxide
C) Ozone
D) Carbon Dioxide
As altitude increases in the troposphere, what happens to air pressure and temperature?
A) Both pressure and temperature increase
B) Pressure decreases, but temperature increases
C) Both pressure and temperature decrease
D) Pressure increases, but temperature decreases
What is the primary cause of the natural greenhouse effect?
A) Absorption of visible light by nitrogen
B) Reflection of sunlight by water vapor
C) Absorption of infrared radiation by greenhouse gases
D) Scattering of sunlight by atmospheric dust
Which of the following best describes the temperature change in the mesosphere?
A) Decreases with altitude
B) Remains constant
C) Increases with altitude
D) Fluctuates randomly
What is the main reason for temperature inversion in the atmosphere, where warmer air sits above cooler air?
A) Strong winds push warmer air downward
B) Cooler air becomes trapped under a layer of warmer air
C) Warm air sinks because it is denser than cold air
D) Temperature inversions only occur in the stratosphere
What is the approximate percentage of oxygen in Earth’s atmosphere?
A) 21%
B) 78%
C) 1%
D) 99%
Which atmospheric layer protects Earth from meteoroids by causing them to burn up?
A) Exosphere
B) Mesosphere
C) Stratosphere
D) Troposphere
What percentage of solar energy reaching Earth is reflected back into space by clouds, atmospheric particles, and the surface?
A) 10%
B) 23%
C) 31%
D) 50%
Which human activity has contributed most significantly to an increase in greenhouse gases in the atmosphere?
A) Planting trees
B) Combustion of fossil fuels
C) Building dams
D) Using wind energy
What is the approximate concentration of carbon dioxide in the atmosphere today?
A) 0.04%
B) 1%
C) 10%
D) 21%
In which atmospheric layer does the temperature generally increase due to the direct absorption of solar radiation?
A) Mesosphere
B) Thermosphere
C) Troposphere
D) Stratosphere
What is the function of the troposphere in Earth’s energy balance?
A) Reflecting solar radiation back to space
B) Absorbing most of the Sun’s ultraviolet radiation
C) Trapping heat through greenhouse gases
D) Allowing heat to escape to space freely
Answers:
B - Stratosphere
C - Troposphere
C - Increases with altitude
D - Troposphere
B - Thermosphere
B - Troposphere
D - Nitrogen
C - Mesosphere
C - Ozone
C - Both pressure and temperature decrease
C - Absorption of infrared radiation by greenhouse gases
A - Decreases with altitude
B - Cooler air becomes trapped under a layer of warmer air
A - 21%
B - Mesosphere
C - 31%
B - Combustion of fossil fuels
A - 0.04%
D - Stratosphere
C - Trapping heat through greenhouse gases
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