32 Questions
What percentage of Earth's atmosphere is made up of nitrogen gas?
78%
Which gas makes up the second most abundant in Earth's atmosphere?
Oxygen
Where does over ¾ of the atmosphere by mass lie?
In the lowest 33,000 ft
What is the total mass of the Earth's atmosphere (in grams)?
5.3x10^21
What is the primary function of the Earth's atmosphere in relation to high-energy radiation and the vacuum of space?
Protects from high-energy radiation and frigid vacuum of space
What is the range of water vapor content in the atmosphere based on geographic location and climatic conditions?
1% to 4%
What is the term used to describe the layer of the atmosphere that extends up to 80km above the surface?
Homosphere
Why are particles in the air important?
Act as condensation and freezing nuclei
Which of the following gases is found in the atmosphere near the surface and can be up to 10 ppmv in the stratosphere?
Ozone (O3)
Which layer of the atmosphere is characterized by strong vertical mixing, overturning, turbulence, and weather phenomena?
Troposphere
What is the boundary between the troposphere and the stratosphere called?
Tropopause
What is the force per unit area exerted into a surface by the weight of air above that surface in the atmosphere of Earth called?
Atmospheric pressure
Which layer of the atmosphere is stable, dry, and almost free from weather occurrence?
Stratosphere
What is the term used to describe a liquid or solid dispersed in a gas, usually air?
Aerosol
What is the term for parts per million by volume?
ppmv
Which layer of the atmosphere lies below an altitude of 5.6 km?
Troposphere
What is the total mass of the Earth's atmosphere in grams?
5.3x10^21
What is the primary function of the Earth's atmosphere in relation to high-energy radiation and the vacuum of space?
Protects from high-energy radiation and the frigid vacuum of space
What percentage of Earth's atmosphere is made up of nitrogen gas?
78.5%
Which gas makes up the second most abundant in Earth's atmosphere?
Oxygen
Which layer of the atmosphere lies below an altitude of 5.6 km?
Troposphere
What is the term used to describe a liquid or solid dispersed in a gas, usually air?
Aerosol
What is the composition of ozone (O3) near the Earth's surface?
500 ppmv
What is the primary function of the homosphere in the atmosphere?
Regulating air pressure
What makes up the lowest layer of the hetersphere in the atmosphere?
Molecular nitrogen
At what altitude does the boundary between the troposphere and the stratosphere occur?
50 km
What is the environmental lapse rate in the troposphere?
$6.5°C/km$
What is the percentage of Earth's atmosphere that lies below an altitude of 5.6 km?
90%
What is the term used to describe a liquid or solid dispersed in a gas, usually air?
Aerosol
What is the force per unit area exerted into a surface by the weight of air above that surface in the Earth's atmosphere called?
$1 atm$
Which layer of the atmosphere is almost free from weather occurrence and characterized by stability and dryness?
Stratosphere
What is the term used to describe parts per million by volume?
ppmv
Learn about the Earth's atmosphere, its composition, and its vital role in supporting life on the planet. Understand how the atmosphere absorbs energy, recycles water and chemicals, and protects Earth from high-energy radiation.
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