Layers of Atmosphere

Space shuttles and International Space Station orbit in the...

• stratosphere
• thermosphere
• troposphere
• mesosphere

The ________ is between the mesosphere and troposphere.

• stratosphere
• thermosphere
• troposphere
• mesosphere

The coldest layer.

• troposphere
• thermosphere
• exosphere
• mesosphere

As you travel higher up in the atmosphere the...

• altitude decreases and the temperature increases (gets warmer)

• altitude increases and the temperature decreases (gets colder)

Clouds form when water vapor _______, or changes from a gas to a liquid.

• evaporates

• condenses

What gas makes up the largest proportion of air at 78%?

• oxygen

• nitrogen

• argon

• carbon dioxide

Which layer is hotter?

• Stratosphere

• Troposphere

What takes place at the surface of an ocean when a liquid changes to a gas, like water vapor?

• evaporation
• condensation

Which layer is the outermost layer?

• troposphere
• thermosphere
• exosphere
• mesosphere

The higher you go, the air becomes.......

• More dense
• Less dense