The document discusses the distribution of water on Earth. It notes that: - 71% of the Earth's surface is covered in water, but 97% of that water is salty ocean water, leaving only 3% as freshwater. - The major stores of freshwater are glaciers/ice (2.15%), groundwater (0.61%), and freshwater lakes (0.009%). Smaller amounts are found in the atmosphere, inland seas, soil moisture, and rivers. - Water is distributed through the hydrologic cycle and, while it changes forms, the amount of water on Earth remains fairly constant over time as it is recycled.

2. How much water exists on, in, and above
our planet?
The big blue sphere
represents the volume of all
water on, in, and above the
Earth.
The smaller sphere over
Kentucky represents Earth's
liquid fresh water in
groundwater, swamp water,
rivers, and lakes.

3. Water Distribution
Water is a finite source.
The Earth is a closed system.
The water that was here billions of
years ago is still here now.
The Earth cleans and replenishes
the water supply through the
hydrologic cycle.

4. Not that much actually…
Water covers 71% of the Earth’s
surface.
a. 97% is salty water
b. 3% is fresh water

6. THE FOUR MAJOR OCEANS
Pacific
Atlantic
Indian
Arctic

7. VOLUME DISTRIBUTION
OF WATER
Water Source Water volume
in cubic miles
Water volume
in cubic
Percent of
Freshwater
Percent of
Total Water
Oceans,
Seas and
Bays
321, 000, 000 1, 338, 000,
000
- 95.4%
Ground Ice
and
Permafrost
71, 970 300, 000 0.86 0.022
Biological
Water
268 1, 120 0.003 0.0001
HighestAmount
Average Amount
Lowest Amount

8. In Detail
1) Ocean water 97.2 percent
2) Glaciers and other ice 2.15 percent
3) Groundwater 0.61 percent
4) Fresh water lakes 0.009 percent
5) Inland seas 0.008 percent
6) Soil Moisture 0.005 percent
7) Atmosphere 0.001 percent
8) Rivers 0.0001 percent.
(Source: Nace, USGS, 1967 and The Hydrologic Cycle (Pamphlet), USGS, 1984)

9. Percentage of Water

10. Classification of water resources:
SURFACE WATER
-Water that is on the surface of the Earth
GLACIERS AND ICE CAPS
-Storehouse of Freshwater
GROUNDWATER
-as water that is found beneath the surface of the

12. THE STATE OF WATER
The Natural
Water
Physical and
Chemical
attributes
Biological
attributes
Organisms’
Adaptation
Salty
Fresh
Water
Pollution
Alteration of
water
features
Hazardous
for users

13. WATER QUALITY
•The degree of pollution from the point of
view of organisms living in or using the
water.