Clouds travel at different levels in this thin layer of gases surrounding the earth.

A system containing and recycling all the water on the earth including fresh water and oceans.

All the life on the Earth which includes plants and animals on the land and water.

The solid land of the Earth as well as the soils and loose rocks on the surface.

Rains coming from the ocean create a dry area on the down side of the mountain known as

An underground formation that contains groundwater above bedrock or clay.

Water vapor cools and forms into droplets, even in the clouds.

Liquid water becomes a gas with an increase in temperature.

Most of the Earth's fresh water is

Most of the Earth's surface fresh water is found in

How much of the Earth's surface is covered by water?

How much of Earth's water is fresh water?

The most likely effect of melting glaciers to our Earth is

Clouds are made up of water vapor and other tiny particles.

Rain falls through holes in the clouds.

Some of the salt in seawater comes from undersea volcanoes.

A lot of our trash ends up in the sea.

Gray water is good to drink.

Clouds are made of thick smoke.

A rain shadow is formed when mountains stop rain from reaching the valley next to them.