Earth's Atmosphere

What two gases make up 99% of the atmosphere's total volume?

• nitrogen and oxygen

• oxygen and carbon dioxide

• nitrogen and helium

• oxygen and argon

Which of the following processes cycle nitrogen and oxygen in and out of the atmosphere?

• photosynthesis

• cellular respiration

• the nitrogen cycle

During photosynthesis, plants absorb _______ and release ________

Tags

NGSS.MS-LS1-6

In cellular respiration,

• organisms take in oxygen and release carbon dioxide

• organisms take in carbon dioxide and release oxygen

Tags

NGSS.MS-LS2-3

Which of the following is not a layer of the atmosphere?

• troposphere

• stratosphere

• mesosphere

• hemisphere

Check all that apply to the troposphere

• Ozone layer is part of this layer

• Closest to the Earth's surface

• top of this layer experiences the coldest temperatures

• Weather and clouds develop here

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-4

This is the coldest layer of the atmosphere

• stratosphere

• mesosphere

• thermosphere

• exosphere

This layer absorbs most of the UV and x-ray radiation from the sun

• troposphere

• stratosphere

• exospshere

• thermosphere

Air pressure

• increases as the amount of water vapor decreases

• increases as temperature increases

• decreases as amount of water vapor increases

• decreases as temperature decreases

Tags

NGSS.MS-ESS2-5

As you move farther away from Earth, the temperature in the layers of the atmosphere

• steadily increases

• steadily decreases

• decreases, increases, decreases, increases

• increases, decreases, increases, decreases