structure and composition of atmosphere

Which of Earth’s spheres is composed primarily of gases?

• the Atmosphere

• the Asthenosphere

• the Hydrosphere

• the Biosphere

The standard sea-level atmospheric pressure is ________ millibars.

• 1013

• 29.92

• 14.7

• 0 (zero)

What is the relationship between atmospheric pressure and altitude above sea level?

• Atmospheric pressure decreases with increasing altitude.

• Atmospheric pressure increases with increasing altitude.

• Atmospheric pressure is not affected by increasing altitude.

Earth’s atmosphere can be layered based upon which factor?

• temperature

• pressure

• density

• mass

What happens to temperature as you ascend upward through the stratosphere?

• temperature increases

• temperature decreases

• temperature remains constant

Which layer of the atmosphere has no well-defined upper limit?

• the Thermosphere

• the Troposphere

• the Mesosphere

• the Stratosphere

Which of the following is the most abundant gas in our atmosphere?

• nitrogen

• oxygen

• carbon dioxide

• carbon monoxide

Which of the following are major variable components of the atmosphere? CHOOSE ALL THAT APPLY!

• water vapor

• aerosols

• carbon dioxide

• oxygen gas

Which of the following is an example of a natural atmospheric aerosol in the atmosphere?

• dust storms

• smog pollutants

• emissions from manufacturing

• emissions from transportation

Which of the following best describes the issue in this picture?

• human-induced pollution

• natural pollution

• atmospheric carbon dioxide levels in excess of 20%

• high humidity