What forms of water are found on earth?
solid, liquid, and gas
True or False? Clouds are the result of water vapor condensing into tiny water droplets.
True
Where does rain come from?
Water droplets within a could eventually get too big and fall back down to earth as rain, snow, or hail.
How old is water on earth.
Millions of years old.
How do we know there is water in the air?
Some evidence that there is water vapor in the air include clouds, feeling moisture on our skin on a humid day (condensation)
What cause water to change from a vapor to liquid, or a liquid to solid?
Water changes form in response to changing temperatures.
Does water become cleaner when it evaporates into a water vapor?
Yes, generally, water becomes cleaner when it evaporates.
True or False There is the same amount of water on Earth as there was when the Earth was formed.
True
True or False? Nearly 97% of the world’s water is drinkable.
False Nearly 97% of the world’s water is salty or otherwise undrinkable. Another 2% is locked in ice caps and glaciers.
True or False 75% of the human brain is water.
True
True or False 75% of a living tree is water.
True
True or False a person can live a month without water.
False you can only live a week
