Water Cycle
and Weather
Unit Review
Water Cycle
Evaporation
 When
the sun heats up the (liquid) water
and turns it into a gas (water vapor). The
gas rises up in the atmosphere and
collects in the clouds.
Condensation
 When
the water vapor (warm moist air)
meets the cooler air in the upper
atmosphere, it condenses (or changes)
back to a liquid or solid form. It collects in
the clouds.
Precipitation
 When
the clouds become saturated ( or
full) of condensed water vapor, the water
falls back to the Earth’s surface as rain,
sleet, snow or hail.
Forms of Precipitation
Rain:
liquid water because air temperature is warm
 Sleet:
frozen rain because the air temperature is freezing
 Snow:
ice crystals
 Hail:
balls of ice because the water in the clouds is frozen
and does not have time to melt on the way down.
(Usually happens during storms)

States of Matter
Solid:
Example: ice
 Liquid:
Example: water
 Gas:
Example: air, water vapor

*Freezing temperature:
0 C/ 32 F
*Boiling Temperature:
100 C/212 F
Weather vs. Climate
 Weather:
What is happening outside right now.
 Climate:
weather in one area over a long period of
time.
Weather map
Climate Map/Zones
Layers of the Atmosphere
Troposphere:
weather happens here

Stratosphere:
above weather/clouds, where planes fly, ozone layer

Mesosphere:
where meteors burn up before hitting earth

Thermosphere:
radio waves are reflected back to earth
