2. The Water CycleThe Water Cycle
THE SUN DRIVES THE WATER CYCLE.THE SUN DRIVES THE WATER CYCLE.
3. The Water CycleThe Water Cycle
THE SUN DRIVES THE WATER CYCLE.THE SUN DRIVES THE WATER CYCLE.
4. The Water CycleThe Water Cycle
THE SUN DRIVES THE WATER CYCLE.THE SUN DRIVES THE WATER CYCLE.
5. The Water CycleThe Water Cycle
THE SUN DRIVES THE WATER CYCLE.THE SUN DRIVES THE WATER CYCLE.
6.
7. Why Study Water?Why Study Water?
Only 3% of
Earth’s water is
freshwater.
Only 30% of ALL
freshwater is in
liquid form:
1% on the
surface
29% underground
8. THE WATER CYCLETHE WATER CYCLE
GLACIERSGLACIERS
Snow falls ontoSnow falls onto
mountains and staysmountains and stays
a long time (10s ofa long time (10s of
1,000s of years).1,000s of years).
When it finally melts,When it finally melts,
it provides water forit provides water for
streams and rivers.streams and rivers.
9. THE WATER CYCLE: SurfaceTHE WATER CYCLE: Surface
WaterWater
Surface water comes from precipitation and moves
due to gravity.
10. THE WATER CYCLE: SurfaceTHE WATER CYCLE: Surface
WaterWater
•Surface water runs
downhill due to gravity.
•The area of land that
contributes water to a
river system is called a
watershed.
11. THE WATER CYCLE: SurfaceTHE WATER CYCLE: Surface
WaterWater
All of the precipitation that
falls inside this area,
eventually flows out this
outlet into the sea.
15. Long Island Sound
Long Island Sound
Major Watersheds in ConnecticutMajor Watersheds in Connecticut
SouthSouth
CentralCentral
CoastaCoasta
ll Parker Hill Rd
HKHS
16. Some surface water eventually becomes GROUNDWATERSome surface water eventually becomes GROUNDWATER
17. Groundwater – water that soaks
(infiltrates/percolates) into the ground from
rain or melted snow.
19. Ground WaterGround Water ZonesZones
Water TableWater Table ––
Boundary atBoundary at
the top of thethe top of the
groundwatergroundwater
zone.zone.
20. Ground WaterGround Water ZonesZones
Water TableWater Table ––
Boundary atBoundary at
the top of thethe top of the
groundwatergroundwater
zone.zone.
Zone of SaturationZone of Saturation
is an AQUIFERis an AQUIFER
21. Ground WaterGround Water
AquiferAquifer – Layer of permeable rock or– Layer of permeable rock or
sediment.sediment.
Notice theNotice the
RECHARGERECHARGE
ZONEZONE
22. Ground WaterGround Water
AquiferAquifer – Layer of permeable rock or– Layer of permeable rock or
sediment.sediment.
Aquifers areAquifers are
“recharged” by“recharged” by
precipitationprecipitation
filtering intofiltering into
permeable soils.permeable soils.
24. THE WATER CYCLETHE WATER CYCLE
OceansOceans: : where it all ends up going.where it all ends up going.
Rivers, streams and runoffRivers, streams and runoff carry all of thecarry all of the
water AND EVERYTHING ELSE from thewater AND EVERYTHING ELSE from the
land into the oceansland into the oceans. When water gets into. When water gets into
the oceans, it mixes and becomesthe oceans, it mixes and becomes saltysalty..
97% of water on the earth is in the oceans.97% of water on the earth is in the oceans.
25. DID YOU KNOW?DID YOU KNOW?
About ½ of 1% of the water on earth is groundwaterAbout ½ of 1% of the water on earth is groundwater
Only about 1/100 of 1% of the water on earth is inOnly about 1/100 of 1% of the water on earth is in
the rivers and lakesthe rivers and lakes
It takes 39,090 gallons of water to make a newIt takes 39,090 gallons of water to make a new
car, including tirescar, including tires
Over 17,000,000 houses use private wells for theirOver 17,000,000 houses use private wells for their
drinking water supplydrinking water supply
A person can live about a month without food, butA person can live about a month without food, but
can live only about 1 week without watercan live only about 1 week without water
