Earth

1
Earths Waters Water Continually Cycles 1.1

• Water is a solid, liquid, gas.
• 71 of earths surface is water.
• Our body is two-thirds water.
• Fresh water water that is not salty and has
  little or no taste, color, or smell.
• Salt water water that contains dissolved salts
  and other minerals.
• 97 of earths water is saltwater

2

• Water Cycle the continuous movement of water
  through the environment of the earth.
• 4 major processes
• Evaporation
• Condensation
• Precipitation
• Collection

3

• Evaporation water changes from liquid to vapor
  through heat energy from sun.
• Condensation water vapor in the atmosphere
  becomes a liquid occurs as air cools.
• Precipitation water that falls from clouds
  rain, snow, sleet, or hail.
• Collection water falls to the ground and is
  collected in oceans, rivers, lakes, streams.
• Groundwater water seeps into the ground, can
  stay for days or millions of years.

4

• Runoff water from precipitation sinks into the
  soil or flows into streams or rivers.
• Transpiration - Plants release water into the air
  from their leaves. They are part of the water
  cycle pull water up from ground, release water
  into air from leaves.
• When salt water evaporates, the salt is left
  behind.
• 85 of water that evaporates on earth is from the
  oceans
• Precipitation is fresh water.

5
The Water Cycle Song

• Sing to the tune of Oh My Darling Clementine
• Evaporation, Condensation,
• Precipitation trickling down
• Its called the Water,Water Cycle
• and its happening right now

6
Another Water Cycle Song

• Sing to the tune of Shell be Coming Round the
  Mountain
• Water travels in a circle yes it does.
• Water travels in a circle yes it does.
• It goes up as evaporation
• Forms clouds as condensation
• Then comes down as precipitation yes it does.

7
EARTHS WATERS1.2 Fresh Water Flows and
Freezes on Earth

• Divide A ridge or continuous line of high land,
  from which water flows in different directions.
• Drainage basin (or watershed) is an area into
  which all of the water on one side of the divide
  flows.

8
When it rains in a drainage basin, the water
forms streams and rivers or sinks into the
ground.
9
Surface Water Collects in Ponds and Lakes

• Lakes and ponds form where water naturally
  collects in low parts of land.
• Water can fill a lake in a couple of ways
• When land is below the level of underground
  water, the low land fills with water.
• Can come from a stream or river, and can leave
  from a lake by a stream or river.

10
Lake Turnover

• Turnover The rising and sinking of cold and warm
  layers in a lake. Turnovers occur twice a year as
  the seasons change.
• The water in a lake is not as still as it
  appears. The changing temperatures of the seasons
  affect the water and cause it to move within the
  lake in a yearly cycle.

11
Eutrophication

• Eutrophication An increase of nutrients in a
  lake or pond where the pond/lake becomes a
  meadow.
• A lake does not remain a lake forever. Through
  natural processes, (thousands of years) most
  lakes become meadows, fields, grass, etc. The
  activity of the life of a lake is based on
  nutrient levels (eutrophication).

12
FROZEN WATER

• 2/3 of the Earths fresh water is frozen land
  near the poles.
• Glacier Large mass of ice and snow that moves
  over land.
• Two types of glaciers (1) continental glaciers
  (cover huge land masses),
• (2) valley glaciers (in mountains)

13
ICEBERGS

• Iceberg A mass of ice floating in the ocean.
• Icebergs as tall as 150 ft. above sea level have
  been found (only about 1/8 can be seen above the
  surface!)
• Most of the floating icebergs are below the
  waters surface.
• Water in an iceberg may have been frozen for
  15,000 years.