Atmosphere review

Earth's current atmosphere is

• 78% nitrogen, 21% oxygen, 0.9% argon and 0.037% carbon dioxide
• 78% oxygen, 21%nitrogen, 0.9% argon, 0.037% carbon dioxide
• 78% nitrogen, 21% argon, 1% oxygen
• 78% oxygen, 21% nitrogen, 1% carbon dioxide

The layers of the atmosphere in order from bottom to top are

• troposphere, stratosphere, mesosphere, thermosphere, exosphere
• troposphere, mesosphere, atmosphere, thermosphere
• mesosphere, thermosphere, troposphere, stratosphere, exosphere
• thermosphere, stratosphere, mesosphere, troposphere, exosphere

The layer of the atmosphere containing the ozone layer is

• troposphere
• stratosphere
• thermosphere
• mesosphere

The layer of the atmosphere containing our weather is

• thermosphere
• stratosphere
• troposphere
• mesosphere

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

The process in which nitrogen circulates and is recycled is called

• The nitrogen cycle

• The carbon cycle

• The water cycle

• The phosphorus cycle

Tags

NGSS.MS-LS2-3

How do animals get the nitrogen they need?

• From the air they breathe

• From the water they drink

• From the food they eat

• From the sun

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

What is the formula for atmospheric nitrogen?

• N

• N₂

• NH₃

• NO₃

According to this diagram, plants use nitrogen to make _________________________

• bacteria

• animals

• proteins

• decomposers

Bacteria fix nitrogen from the atmosphere into a form plants can use.

• True

• False

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

What is the process where bacteria turns Nitrogen gas from the atmospheres into usable compounds?

• nitrogen composition

• nitrogen fixation

• ammonia

• denitrification

Tags

NGSS.MS-LS2-3