Earth is known as the 'blue planet' because 71% of its surface is covered in water, most of which (97%) is in the oceans. The remaining 3% of Earth's water is found in various forms - as ice caps and glaciers, water vapor in the atmosphere, groundwater underground, and freshwater in lakes, rivers and streams. Water is constantly being recycled and cleaned through the global water cycle as it changes between liquid, solid and gas states in the atmosphere and on the Earth's surface and subsurface.

1. WATER DISTRIBUTION
ON EARTH
ALI HASSAN VIRK

2. The
Blue
Planet
Earth is known as the 'blue
planet' because it is covered
with water and from space it
is seen as bright blue. Water
occurs in many forms on
Earth, and it is naturally
present in all three phases of
matter: liquid water (oceans,
lakes and streams), solid (ice
caps and glaciers) and gas
(water vapor in the
atmosphere).

3. How Water
Is
Distributed
When you look at an image
of Earth, it's easy to
understand that 70% of its
surface is covered with
water. This is because all
that blue you see is water in
the oceans - about 97% of
all the water on Earth!
Ocean water is very salty,
much too salty for us to
drink, so in the oceans it
stays.

4. Class Group A Group B
Class 1 82 95
Class 2 76 88
Class 3 84 90
Surface Water
Surface waters include streams, rivers, lakes, reservoirs, and
wetlands.
Ground Water
Groundwater, which makes up around 22% of the water we use,
is the water beneath the earth's surface filling cracks and other
openings in beds of rock and sand.
Wastewater
Stormwater
MAJOR TYPES OF WATER ON EARTH

5. DISTRIBUTION OF
WATER ON EARTH
Liquid fresh water
in groundwater,
swamp water,
rivers, and lakes. 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
in groundwater,
swamp water,
rivers, and lakes

6. TYPES OF FRESH WATER ON EARTH
There are three basic types of
freshwater ecosystems:
Lentic: slow moving water, including
pools, ponds, and lakes.
Lotic: faster moving water, for
example streams and rivers.
Wetlands: areas where the soil is
saturated or inundated for at least
part of the time.

7. Salt water
Seawater is a
complex mixture of
96.5 percent water,
2.5 percent salts, and
smaller amounts of
other substances,
including dissolved
inorganic and organic
materials,
particulates, and a few
atmospheric gases.

8. ICE
CAPS
Ice caps are miniature ice
sheets. Like icefields, ice caps
cover less than 50,000 square
kilometers (19,300 square
miles). Unlike icefields, ice
caps completely blanket the
underlying land features. They
are domes that spread in all
directions. Ice caps form
primarily in polar and sub-
polar regions that are
relatively flat and high in
elevation.

9. GROUND WATER
Groundwater is
the water found underg
round in the cracks and
spaces in soil, sand and
rock. It is stored in and
moves slowly through
geologic formations of
soil, sand and rocks called
aquifers.

10. THE WATER
CYCLE
The water cycle describes
how water evaporates from
the surface of the earth, rises
into the atmosphere, cools and
condenses into rain or snow in
clouds, and falls again to the
surface as precipitation. ...
The cycling of water in and
out of the atmosphere is a
significant aspect of the
weather patterns on Earth.

11. MAJOR
OCEANS
Historically, there are four named
ocean basins:
the Atlantic, Pacific, Indian, and
Arctic. However, most countries -
including the United States - now
recognize the Southern (Antarctic)
as the fifth ocean basin.
The Pacific, Atlantic, and Indian
are the most commonly known.

13. ACTIVITIES THAT AFFECT WATER
They include ;
Sedimentation
Pollution
climate changeDeforestation
landscape
changes,
urban growth.

14. VOLUME
DISTRIBUTION OF
WATER