The Water Cycle
Earth and Water
 The water on Earth today
is the same water that was
on Earth billions of years
ago.
 We are drinking the same
water dinosaurs drank!
 About ___ of the Earth’s
surface is water.
 Every day 40 trillion
gallons of water is being
cycled through the
atmosphere.
http://earthguide.ucsd.edu/earthguide/diagrams/watercycle/
Water Cycle ( 6 PROCESSES INVOLVED)
evaporation- the process where liquid changes into a
gas (water vapor) due to heating
condensation- water vapor in the air that turns back
into liquid
precipitation- water in the air that falls to the earth in
the form of rain, snow, sleet, or hail
transpiration- vapor that comes from plants, trees,
and the ground and goes into the air
infiltration- water soaks into the ground- some returns
to the surface, some remains in-ground
run-off- precipitation that returns to earth into rivers,
streams, and oceans
Study Jams
Water Cycle
http://teacher.scholastic.com/activities/studyjams/water_cycle/
Evaporation
You need 2
things:
Gas – water vapor
1. The sun
2. Water
Evaporation
Demonstration
Transpiration
Gas – Water
Vapor
Water
Transpiration
Activity
1. What do you
notice about the
side with the bag
covering the
leaves?
2. Where do you
think the
transpiration goes
on the side that is
not covered?
Condensation
COLDER AIR
Liquid
Water Droplets
Gas
Water Vapor
WARMER AIR
Condensation
Activity
1. What caused the
water droplets to
form on the outside
of the glass?
2. Where did the water
droplets come from?
3. How is this similar to
the water cycle?
Cloud in a Jar
1. Why did we put the ice on
top of the jar?
2. What was the purpose of
the match?
3. What happened to the
“smoke”?
4. How does this represent
what happens during the
water cycle?
Precipitation
BIG
HEAVY
RAIN
SLEET
HAIL
SNOW
Make a Rain Gauge
Run-
Off
BODY OF WATER
Run-off Activity
1. What happens to water that does not met a
sloped surface?
2. Is there a difference in the water that runs-off
soil, rock, etc?
Infiltration
DIRT
GROUNDWATER
Infiltration Activity
Water Cycle Simulation
CLICK
Magic School Bus
Wet All Over
Create your own
water cycle!
WARM WATER