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How is Water Important?
Transcript of How is Water Important?
Water is the most
common liquid on
planet earth and
71% of earth's
Where is Earth's Water found?
The water cycle is the movement of water from one area to the next. This process refills the freshwater reservoirs on land.
Normal rain has a pH of 5-5.5 but when rain dissolves Nitrogen Oxides or Sulfur Dioxide it has a pH of about 4.
Sulfur Dioxide and Nitrogen Oxides enter the atmosphere when sulfur containing materials such as fossil fuels are burned
There are two major types of mercury that mostly affect the environment ground mercury and methyl mercury.
Arsenic is a chemical that can be harmful to humans and animals. It can enter water when released through mining or burning of fossil fuels
How do people use water?
How did you use water this morning?
Besides household purposes, how do people use water?
Farming requires a constant supply of fresh water.
– process of supplying
to areas of land to make them suitable for growing crops
winter sports (i.e., skiing, skating)
Water is used in industrial processes
Exp. Power plants and steel mills need water to
cool down hot machinery
processes that make products.
Transport people and goods
Trading along rivers
What do you and an apple have in common?
You both consist mostly of water.
Water makes up 2/3 of you your body
Why is Earth Called the "Water Planet"?
Most of earth's water is 97% salt water that is found in the ocean.
Only 3% is FRESH WATER
Most fresh water is found in huge ice masses near the North and South Pole
(ANSWER TO EQ)
is in the atmosphere in the form of water vapor (gaseous form of water).
Lakes and rivers
is found in groundwater
is fresh water available for human use.
All Earth's oceans are connected to form a single world ocean.
Icebergs in Antarctica (south pole) and the Arctic Ocean (north pole)
3. Rivers & Lakes
The Great Lakes contain 20% of the world's freshwater lakes.
5. Water Vapor
- Most of the water in the atmosphere is invisible.
is the gaseous form of water
- water that fills the cracks and spaces in underground soil and rock layers.
-Far more fresh water is located underground than in all Earth’s rivers and lakes.
4.Below Earth's surface
Classify the following as fresh water or salt water:
Groundwater, icebergs, and rivers are examples of freshwater. Oceans are classified as salt water.
Water and Living Things
Water is essential for living things to
grow, reproduce, and carry out important processes
is the process in which plants use
water plus carbon dioxide
and energy from the sun to make food.
is the place
where an organism lives
that provides the things it needs to survive.
Both fresh water and salt water provide habitats for living things.
EQ: Why do you think ocean water (saltwater) is not available for human use?
Ocean water has extra salt. If you drink it, it can cause dehydration and is toxic to your body.