APES 4.4 Earth's Atmosphere (2025)

Air in the atmosphere is 78%

• Einsteinium

• nitrogen

• oxygen

• carbon dioxide

The layer of atmosphere closest to the Earth is called the

• mesosphere
• stratosphere
• troposphere
• proctosphere

Tags

NGSS.MS-ESS2-6

The ozone (O₃) layer

• is green and purple

• absorbs dangerous solar radiation

• smells like sulphur

• is made of carbon dioxide

What layer of the atmosphere is closest to outer space?

• mesosphere

• exosphere

• troposphere

• stratosphere

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 (O₃) layer is

• troposphere

• stratosphere

• thermosphere

• mesosphere

The layer of the atmosphere containing our weather is

• thermosphere
• stratosphere
• troposphere
• mesosphere

Tags

NGSS.MS-ESS2-5

Auroras can be found in which layer of the atmosphere?

• thermosphere

• stratosphere

• trophosphere

• exosphere

Tags

NGSS.5-ESS2-1

What does ozone in the atmosphere do?

• It absorbs and traps heat energy.
• It provides a place for water vapor to condense.
• It protects against harmful UV radiation.
• It helps plants grow.