ShareEarth's Structure - How Many Licks Does it Take to Get to the Center?
Earth's Water
The second
layer encountered when investigating Earth is the water. Water does
not cover Earth's entire surface, but covers approximately three-fourths
of it. Water is one of the few molecules that is found in all three
states (solid, liquid, and gas) on Earth. Water is more dense than
the atmosphere (although water is found in the atmosphere as a gas), but
less dense than crust and interior layers. (Some water is found
in the crust and interior.) Although there is a lot of water on Earth,
only a small fraction is available for drinking.
