Water, water, everywhere.
Evaporation, precipitation, condensation, transpiration.
Water cycle.
The layer of the atmosphere that is closest to Earth's surface.
Troposphere.
A boundary between two or more air masses.
Front.
Height above the ground.
Altitude.
A scientist who studies weather.
Rain, snow, hail, sleet.
Precipitation.
The layer of the atmosphere that is above the mesosphere.
Thermosphere.
A body of air with a similar temperature and humidity.
Air mass.
The process by which gases trap hear in Earth's atmosphere.
Greenhouse effect.
The average weather of a region over many years.
Climate.
The amount of water vapor in the air.
Humidity.
The layer of the atmosphere that is above the troposphere.
Stratosphere.
A front where one air mass moves above a slower, denser air mass.
Warm front.
The top of the troposphere.
Tropopause.
What determines the rates of evaporation and condensation?
Temperature.
The temperature at which the rate of condensation equals the rate of evaporation.
Dew point.
The layer of the atmosphere that is above the stratosphere.
Mesosphere.
A front where one air mass moves quickly under a slower air mass.
Cold front.
Volcanic eruptions around the glove releasing large amounts of gas.
Outgassing.
Barometer.
Process where plants lose water through pores.
Transpiration.
An area in the upper mesosphere and lower thermosphere.
Ionosphere.
A front where two air masses meet but neither one pushes over the other.
Stationary front.
Chemicals which destroy ozone molecules.
Chlorofluorocarbons.
Why does Earth have seasons?
Its tilted axis.