LP407 - 4Q #6

When air is warmed by the rays of the sun striking the earth, it ______ and becomes cooler.

• stays

• rises

• disappears

It is the air that surrounds the earth

• atmosphere

• pressure

• moisture

Layer of air nearest the earth

• stratosphere

• ionosphere

• troposphere

The layer of ozone in the earth's atmosphere protects people against _____ rays from the sun.

• beneficial

• ultraviolet

• harmless

When water is heated, it changes into _____.

• steam

• a liquid

• lighting

Clouds that are heavy and dark usually have much water _____ in them.

• steam

• vapor

• pressure

There is no air here.

• water

• earth

• space

It is the height above sea level.

• latitude

• ozone

• altitude

The following cause changes in the weather except _______

• moisture in the air

• temperature

• wind changes

• air pressure changes

• None of These

Exosphere is the innermost layer of the atmosphere.

• TRUE

• FALSE