Atmosphere- 7th

The Earth's atmosphere is mainly made of ____.

• water

• wax

• air

• snow

The layer of atmosphere closest to the Earth is called the ____.

• mesophere

• troposphere

• stratosphere

• thermosphere

Air in the atmosphere is 78% ____.

• oxygen

• carbon dioxide

• nitrogen

• nacho cheese

Most of the atmosphere is composed of the following gas: _____.

• nitrogen

• oxygen

• argon

• carbon dioxide

Oxygen is the most common gas in the atmosphere.

• True

• False

The atmosphere is a mixture of gases.

• True

• False

The atmosphere is 21% ____.

• nitrogen

• oxygen

• argon

• carbon dioxide

The stratosphere is located between the _______.

• thermosphere and mesosphere

• troposphere and mesosphere

• core and mantle

• exosphere and mesosphere

Altitude is the...

• distance between the moon and the sun

• place where things drop from the sky

• weight of a mountain divided by the ocean

• height of an object above the ground or sea level

Air pressure is the ________ that air has on a surface or object.

• height

• distance

• force

• protuberance