Pre Assessment

In this circle graph on the composition of the atmosphere, nitrogen is the portion labeled C.

• True

• False

In general, atmospheric pressure is greatest near Earth's surface and ____ as you move upward away from sea level.

• Decreases

• Increases

• Stays the same

• Double

The ____ is the layer of the atmosphere nearest to Earth's surface.

• Exosphere

• Troposphere

• stratosphere

• ionosphere

Atmosphere layers are distinguished by their ____.

• composition

• temperature

• altitude

• all of the above

The ____ contains the highest concentration of ozone.

• troposphere

• mesosphere

• stratosphere

• exosphere

Air pressure ____________________ as altitude increases in the atmosphere

• decreases

• stays the same

• increases

The ____________________ is the layer that is labeled C in the graph.

• mesosphere

• troposphere

• stratosphere

• thermosphere

____ is the transfer of energy in the form of rays or waves.

• conduction

• convection

• radiation

• condensation

____ is the transfer of heat by the flow of a heated material

• radiation

• conduction

• convection

• condensation

Sea and land breezes are caused because ____.

• the land heats and cools more slowly than the water

• the land heats and cools more quickly than the water

• air moves more easily over water than over land

• air moves more easily over land than over water