This term stands for the layers of gasses surrounding a planet that's held in place because of the planet's gravity.

• space

• atmosphere

• air

• oxygen

Tags

NGSS.MS-ESS2-5

troposphere, ____________, mesosphere, thermosphere, and exosphere. Which layer of the atmosphere is missing? (spelling does matter)

As you go higher into the atmosphere, what happens to air pressure?

• air pressure increases

• air pressure decreases

As you go lower into the atmosphere, what happens to air pressure?

• air pressure increases

• air pressure decreases

This layer of the atmosphere is the closest to Earth's surface! It also contains Earth's clouds and weather.

• mesosphere

• stratosphere

• troposphere

• exosphere

This layer of the atmosphere contains the ozone layer that absorbs ultraviolet (UV) rays from the sun and protects us from radiation.

• thermosphere

• exosphere

• troposphere

• stratosphere

This layer of the atmosphere is the coldest out of all the layers and is where meteors burn up.

• troposphere

• stratosphere

• mesosphere

• thermosphere

This layer of the atmosphere is the hottest layer and contains a charged layer of molecules called the ionosphere.

• thermosphere

• mesosphere

• exosphere

• atmosphere

This is the layer of the atmosphere where atoms and molecules exit into space!

• thermosphere

• exosphere

• troposphere

• mesosphere

Where is the air pressure the highest on a mountain?

• At the top of a mountain

• At the middle of a mountain

• At the bottom of a mountain