The Atmosphere
the weight of air pressing down on Earth
air pressure
When water turns from vapor to liquid
condensation
a warm and humid air mass
maritime tropical
isotherms show areas of
equal temperature
rotating columns of air touching the ground
tornadoes
This layer contains ozone
stratosphere
The temperature at which air condenses
dew point
fast-moving air currents high in the atmosphere
jet streams
This storm brings heavy snow and strong winds
winter storm
Global winds are caused by
the amount of water vapor in the air compared to how much it can hold
relative humidity
This front forms when a cold air mass pushes under a warm air mass
cold front
Thunderstorms often include what weather?
lightning, thunder, heavy rain
a long period of little or no rainfall
drought
This layer is the top layer of the atmosphere
thermosphere
The amount of water vapor in the air
humidity
two masses stop moving. Which one is this?
stationary
hurricanes form over what?
warm ocean water
the lake effect is caused by
land cooling quicker than water
This tool measures air pressure
barometer
Hail forms by
air temperatures that are below 0, so water freezes and falls down as hail
cyclones are areas of ______ pressure and ______ weather
low; stormy
hurricanes get their energy from...
warm moist air
lightning occurs when
positive and negative charges in a cloud interact