The Air Around You

Without the atmosphere, we could not hear most sounds.

• True

• False

The main reason Earth can support life is its atmosphere.

• True

• False

Earth’s atmosphere consists mainly of oxygen.

• True

• False

The atmosphere is about 10 percent water vapor.

• True

• False

third most common gas in Earth’s atmosphere

• air pressure

• altitude

• sound

• nitrogen

• argon

weight of air pushing against a given area

• air pressure

• altitude

• sound

• nitrogen

• argon

height above sea level

• air pressure

• altitude

• sound

• nitrogen

• argon

main gas in Earth’s atmosphere

• air pressure

• altitude

• sound

• nitrogen

• argon

form of energy that travels through matter in waves

• air pressure

• altitude

• sound

• nitrogen

• argon

gas in Earth’s atmosphere that varies in amount from place to place

• water vapor

• altitude

• carbon dioxide

• nitrogen

• argon