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How is Water Important?

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by

Diep Stamps

on 9 February 2016

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Transcript of How is Water Important?

Bibliography
http://www.britannica.com/EBchecked/topic/279025/hydrosphere
http://en.wikipedia.org/wiki/Water_cycle
http://www.epa.gov/hg/eco.htm
http://www.ncbi.nlm.nih.gov/pubmed/8279720
http://www.nasa.gov/topics/earth/features/vapor_warming.html
http://www.geocraft.com/WVFossils/greenhouse_data.html
http://science.opposingviews.com/acid-rain-enter-water-cycle-23005.html
http://www.lenntech.com/periodic/water/arsenic/arsenic-and-water.htm
http://cires.colorado.edu/news/press/2013/watervapor.html
http://www.freedrinkingwater.com/water-education/quality-water-hard-page2.htm
http://www.usgs.gov/themes/factsheet/146-00/
Water is the most
common liquid on
planet earth and
covers nearly
71% of earth's
surface.
Where is Earth's Water found?

Oceans
The water cycle is the movement of water from one area to the next. This process refills the freshwater reservoirs on land.
Acid Rain
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
Mercury
There are two major types of mercury that mostly affect the environment ground mercury and methyl mercury.
Arsenic
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
Ground Water
WATER
How do people use water?
How did you use water this morning?
1.Oceans
Besides household purposes, how do people use water?
1. Agriculture
Farming requires a constant supply of fresh water.
Irrigation

– process of supplying water to areas of land to make them suitable for growing crops

4. Recreation
swimming
boating
fishing
winter sports (i.e., skiing, skating)
2. Industry
Water is used in industrial processes
Exp. Power plants and steel mills need water to cool down hot machinery processes that make products.
3. Transportation

Transport people and goods.
Trading along rivers
Ocean travel

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

-
76%
Most fresh water is found in huge ice masses near the North and South Pole
(ANSWER TO EQ)
-
0.037%
is in the atmosphere in the form of water vapor (gaseous form of water).
-
0.34%
Lakes and rivers
-
23%
is found in groundwater
-Less than
1%

is fresh water available for human use.
All Earth's oceans are connected to form a single world ocean.
2. Ice
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.
-
Water vapor
is the gaseous form of water
Groundwater
- 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,
iceberg,
ocean,
and river

Answer:

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

1. Photosynthesis
2. Habitat
Photosynthesis
Photosynthesis
is the process in which plants use water plus carbon dioxide and energy from the sun to make food.
Habitat
A
habitat
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?
Answer:

Ocean water has extra salt. If you drink it, it can cause dehydration and is toxic to your body.
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