Earth's Atmosphere Exam

A combination of many liquids makes up Earth's atmosphere.

• True

• False

The sun shines on and warms Earth's surface directly in a method of energy transfer known as radiation.

• True

• False

The density of air increases as altitude decreases.

• True

• False

The atmosphere is composed mostly of helium and oxygen, with traces of other gases such as carbon dioxide and water vapor.

• True

• False

The stratosphere is important because it contains nitrogen, which blocks harmful ultraviolet radiation from the Sun. ·

• True

• False

Both temperature and pressure generally decrease with height in the troposphere.

• True

• False

Earth's atmosphere contains more than any other substance.

• hydrogen and nitrogen

• helium and oxygen

• nitrogen and oxygen

• carbon and nitrogen

The layer between the stratosphere and thermosphere

• troposphere

• ionosphere

• mesosphere

• stratosphere

• thermosphere

The layer in which most pollution occurs

• troposphere

• ionosphere

• mesosphere

• stratosphere

• thermosphere

The atmosphere's outermost layer

• troposphere

• ionosphere

• mesosphere

• stratosphere

• thermosphere