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Water on Earth
Transcript of Water on Earth
Water used for:
We use water to:
To generate electricity
To travel from place to place
Earth´s Water Supply
The water is the most
important and abundant
resourse on Earth
Earth´s Distribution of water
Salt Water: Earth´s oceans contain some 97 percent of the planet´s water supply. Unfortunately, this water is too salty to drink
Fresh water from lakes, rivers,
and streams makes up only a fraction of
Earth´s water supply
The water found below Earth´s surface is called
What is the WATER CYCLE
The movement of water from Earth´s land, through rivers toward oceans, to the air, and back to the land
Precipitation is any product of the condensation of atmospheric water vapour that falls under gravity. The main forms of precipitation include drizzle, rain, sleet, snow, graupel and hail. Precipitation occurs when a portion of the atmosphere becomes saturated with water vapour, so that the water condenses and "precipitates".
The process by winch water vapor change into liquid water
The process by winch liquid changes into water vapor
Water and People
Many place face water shortage as a result of droughts, or long periods of lower-than normal precipitation
Even where water is plentiful, it may not be clean enougth to use.If chemicals and household waste
make htir way into streams and river, they can contaminate the water suppy. Polluted water can harmcarry disease. These diseases may harm humans, plants, and animals.
Heavy rains often lead to flooding,
which can damage property and threaten
Water´s most important benefit is that it provides us with food to eat. Fruits and vegetables need water to grow.
Sourse of energy.
Using dams, we harness hte power of moving to produce electricity.