Earth’s Water
Lesson 1
How is water distributed on the
Earth?
_______of
the world’s Water
supply is ocean (salt water).
_______of the world’s water
supply is frozen in icecaps and
glaciers.

How is water distributed on the Earth?

________ of the world’s
water supply is nonconsumable water on land.
_______ of the world’s water
supply is freshwater available
for consumption.

World’s Oceans
Can you name the five world
oceans?

World’s Oceans





Atlantic
Pacific
Indian
Arctic
Southern
Pacific Ocean
• The largest ocean. It is larger
than all the land put together.
• It contains 48% of the world’s
seawater.
• The deepest ocean because the
Mariana Trench is located in it. (over
36,000 feet deep)
Atlantic Ocean
• The second largest ocean.
• It contains 23% of the world’s
seawater.
• Most traveled ocean
routes.
Indian Ocean
• The warmest ocean.
• It contains 40% of the world’s
oil production.
Arctic Ocean
• The smallest ocean.
• It is covered by drifting ice.
Southern Ocean
• The newest ocean.
• Recognized in 2000.
• It contains icebergs and deep
continental shelves.
Daily Anagram #2 11/11
I can do a nine
__________ __________
World’s Freshwater

Groundwater:
water that collects
between bits of rock
and soil.
 What factors affect
the groundwater?
(Globe – pp. 210)
How does groundwater reach
the Earth’s surface?
Water may reach the
surface through wells,
springs, or geysers.
 What is the main
difference between a
spring and a geyser?
(Globe – p. 212)

What is the difference between
a river and a lake or pond?
Rivers or streams are running
water.
 Lakes or ponds are still water.
 90% of the continental surface
water is found in lakes.

What is the difference
between a gulf and a sea?
A sea is a smaller body of
water connected to or near
an ocean.
 A gulf is a large area of
ocean reaching into the
land.

Ocean Properties
1. What is the first characteristic
that you notice about ocean
water?

Salinity is the amount of
dissolved salts in ocean
water.
 Fresh water from rivers,
precipitation and glaciers will
lower the salinity of the
water.
 Evaporation during the day
will cause the salinity to rise.
Sodium chloride
(NaCl) is the main
mineral in ocean
water. Most of the
minerals come from
the weathering of
rocks on land. Rivers
bring the minerals to
the ocean.
2. Temperature layers
The ocean can be divided into three
layers based on temperature.
A.
Surface: Sun heats this layer.
Constant winds and waves keep
it circulating so little temperature
variation within layer.
Temperature layers
B. Thermocline: Temperature
drops sharply with depth. Drops
faster than in other two layers.
300-700 meters below sea level.
2.
C. Deep: Average temperature is 2
degrees Celsius.
3. Water Pressure
Water pressure increases as depth
increases.
Water weighs more than air.