Water on the Earth

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Water on the Earth

• Science - Mrs. Ampezzan
• 2006

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The Water Cycle
Water Vapor
Condensation
Evaporation
Precipitation
There is no new water on Earth!
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The Water Cycle
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Glacier

• Glacier - very large, slow-moving sheet of ice.

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Oceans
Arctic Ocean
Atlantic Ocean
Pacific Ocean
Indian Ocean
Southern Ocean
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Oceans

• Most of the water on Earth is in the oceans.
• The oceans are salt water.
• The Pacific Ocean is the largest ocean.
• Oceans are very deep. Sunlight cannot reach the
  bottom of the oceans.

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Lakes and Ponds
Lake
Pond
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Lake and Ponds

• Lake - a body of water with land all around it or
  around most of it.
• Pond - a body of water with land all around it or
  around most of it. A pond is usually small and
  shallow enough for the sun to reach the bottom.
• Basin - the bottom of a lake.

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River
A natural flow of water that runs into an ocean,
lake, or other body of water. Rivers are usually
fed by tributaries.
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River

• Source - where a river starts
• Mouth - where a river ends
• Banks - the sides of a river
• Bed - the bottom of a river
• Run-off - water that cannot be soaked up by the
  ground and it runs across the ground

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TributariesA river that flows into another river.

• The Missouri River runs into the Mississippi
  River.
• The Ohio River runs into the Mississippi River.
• The Arkansas River runs into the Mississippi
  River.

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Streams
Streams are small rivers that flow into bigger
rivers.
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Delta

• The middle of a river often flows slowly.
• This slow water can lets small bits of rock and
  soil fall.
• These pieces of soil and rock form deltas.
• A delta is an area of many small soil deposits.

delta
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Sandbar

• Sandbar - areas of sand and soil deposited by
  waves

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Ground Water
Water that is found under the ground.
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Wells
When the pump is working the water that is close
is sucked in first. Soon this area becomes dry.
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Wells

• Well - when you dig down to get ground water
• Ground water - water that is under the ground.
• Water table - the top of an underground stream.
• Artesian well - a well drilled at a low point and
  water will come without any pumping

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Wells
http//www.wpt.org/waterrich-waterpoor/groundwater
-flash.html Animation of groundwater
cycle http//www.wpt.org/waterrich-waterpoor/well
s-flash.html Animation of wells
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Water Changes the Earth

• Moving water is the main cause of weathering and
  erosion.
• Rain hits rocks and some dissolve.
• Rain hits the ground and moves the soil.
• Rivers move rocks and soil.
• Soil and rocks are carried by a river. When they
  drop in one area they form a delta.
• Waves wear away the land.

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Frozen Water Changes the Earth
hail
snow
sleet
ice

• Frozen water ice, frost, snow and hail

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Weathering

• Weathering is the breaking up of rocks and soil.
• Weathering is caused by rain, wind and ice.
• Weathering can be helpful or harmful.

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Erosion

• Erosion is the wearing down and moving of rocks
  and soil.
• Erosion moves rocks and soil from one place to
  another.
• Wind and moving water move the rocks and soil in
  Erosion.

http//www.freeimages.co.uk/
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Canyons

• V- Shaped Canyon - low area between hills and
  mountains made by a river

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Canyons

• U-Shaped Canyon - a low area cut out by a glacier.

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More About Water
http//ga.water.usgs.gov/edu/earthgwwells.html
Good water science