atmosphere

The blanket of air surrounding

Earth.

atmosphere

water cycle

• The process in which water continuously moves from Earth’s surface into the atmosphere and back again.

Water cycle

evaporation

• The process of a liquid changing into a gas.

evaporation

condensation

• The process of a gas changing into liquid.

condensation

precipitation

• Water that falls from the air to Earth.

precipitation

air mass

• A large body of air that has the same temperature and humidity throughout.

air mass

front

• The border where two air masses meet.

climate

• The pattern of weather an area experiences over a long period of time.

troposphere

• The layer of air closest to Earth’s surfaces.

troposphere

air pressure

• The weight of the atmosphere pressing down on Earth.

local wind

• Movements of air that result from local changes in temperature.

local wind

prevailing wind

• Global winds that blow constantly from the same direction.

prevailing wind

humidity

• A measurement of the amount of water vapor in the air.

Google website images

• atmosphere - iln.cite.hku.hk • water cycle - egodsave.wikispaces.com • evaporation - techalive.mtu.edu • condensation - weatherquestions.com • Precipitation - fondriest.com • air mass – kidsgeo.com• troposphere - aviationweather.wslocal • wind - ocw.usu.edu• prevailing wind – swbet.net