Download The Water Cycle

Water Supply and Distribution
Where’s the water???
(brainstorm)
Did you know that over 70% of
the earth is covered by water?
Interesting
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What do you
notice about
the lakes of
Georgia?
Why is water so important?
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energy from rivers
(hydroelectric)
transportation
irrigation
weathering, erosion and
deposition (shapes our
land)
DRINKING---we can’t live
without it (our bodies are
mostly water—65%).
Water H2O on Earth
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Almost all the water
on Earth is
salty/ocean water
(97%). Oceans
have a salinity of
about 3-4%.
Of the three
percent that is
fresh water, 76% is
frozen and 23% is
underground.
Icebergs and Glaciers
(river of flowing ice)
Where is most of the water in
the world found?
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A.
B.
C.
D.
Underground
In the oceans
In the air (clouds and water vapor)
Frozen (ice)
In what form is the majority of
the world’s FRESH water?
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A. In the air as a gas (water vapor)
B. In the air as a liquid (clouds and
precipitation)
C. As a liquid on the Earth’s surface
(ponds, streams, etc)
D. Frozen (solid ice—glaciers, etc.)
From largest to smallest, the
amounts of water on Earth are
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A. liquid fresh water, solid fresh water,
salt water.
B. salt water, solid fresh water, liquid
fresh water.
C. salt water, liquid surface fresh water,
solid freshwater, groundwater.
D. groundwater, salt water, solid fresh
water.
The Water Cycle
Chapter 11-1
The Water Cycle
3 phases/states of matter
The Water Cycle
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the continuous
movement of water
through Earth’s
atmosphere and
ground
The water cycle is
driven (powered) by
the sun.
Where’s the:
1. Runoff
2. Lake
3. Groundwater
4. River
5. Ocean
6. Plants
7. Clouds
8. Hill/Mountain
9. Water vapor
Evaporation (liquid to gas)
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process when the sun
heats up the liquid
water in rivers, lakes,
and oceans and turns
it into water vapor
(gas), which goes into
the atmosphere
Rain is always fresh
water!
Condensation (gas to liquid)
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Water vapor cools
and changes to liquid
water as it rises in
the air.
Makes clouds
Lab later: As the
vapor cools and
reaches the dew
point, the water
vapor will condense
around dust
particles and form
Precipitation
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Liquid or solid water
falls to the ground
from a cloud. Four
types: rain, snow,
sleet, or hail.
FYI: Most water
molecules only spend
about ten days in the
air before falling
back as precipitation.
Surface Runoff
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Much of the
precipitation runs
off the surface and
flows downhill into
streams. Then it
flow into larger
streams, then rivers,
and eventually flow
back into the ocean.
Infiltration
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Infiltration is an
important process
where rain water
soaks into the
ground
also called
percolation
Groundwater
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Some of the water remains underground and is called
groundwater. As the water infiltrates through the
soil and rock layers, the water is filtered (cleaned).
Transpiration
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Plants absorb water from
the soil, which moves from
the roots through the
stems to the leaves.
After photosynthesis,
excess water vapor leaves
the leaf (from the
underside of the leaves)
through transpiration.
Animals perspire,
Plants transpire
Where would
you find:
1.
2.
3.
4.
5.
Evaporation
Transpiration
Runoff
Precipitation
Condensation
Earth’s Water Supply
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The total amount of
water on the Earth has
not changed much since
early in its history.
The same water is cycled
over and over.
The water you drink at
lunch was probably drunk
by a dinosaur millions of
years ago!
AC: Watershed
(or drainage basin)
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The area of land that is drained by a river
system
Largest is the Mississippi River watershed
Which 1 word does not belong?
(what is the main idea?)
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A.
B.
C.
D.
E.
Vapor
Liquid
Solid
Melting
Phase
Which 1 word does not belong?
(what is the main idea?)
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A.
B.
C.
D.
E.
F.
Liquid
Solid
Condensation
Vapor
Cloud
Cooling
Which 1 word does not belong?
(what is the main idea?)
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A.
B.
C.
D.
E.
F.
Evaporation
Solid
Liquid
Vapor
Heating
Sun
What powers the water cycle?
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A.
B.
C.
D.
Georgia Power Company
Love
Gravity
The sun
At which point in the
diagram is
precipitation most
likely taking place?
A Point A
B Point B
C Point C
D Point D
The cooling of water vapor
leads FIRST to
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A.
B.
C.
D.
cloud formation.
evaporation.
formation of groundwater.
precipitation.
Precipitation can be in the form of
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A.
B.
C.
D.
only a liquid.
only a solid.
only a gas.
a solid or a liquid.
Which is closest to the process
of evaporation?
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A.
B.
C.
D.
Boiling
Freezing
Condensing
Melting
_____________ is the process by
which water moves through the
atmosphere and back to Earth’s
surface.
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A.
B.
C.
D.
E.
Rock cycle
Hydrologic Cycle
Water Cycle
B and C are correct
A and C are correct
In the water cycle, the sun’s energy
causes
A. evaporation.
B. condensation.
C. precipitation.
D. percolation.
Water VAPOR is a
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A.
B.
C.
D.
solid.
liquid.
gas.
form of energy.