____________ are made up of salt water.

What is the process by which plants give off water vapor into the air through their leaves?

______ is the cooling and changing of a gas into a liquid.

Water come from the sky back to the earth as ____________. This includes hail, mist, rain, sleet, and snow.

Water that soaks into the ground and is stored there is called ___________.

Pollution comes from industrial waste such as ____________.

How could water runoff from farmlands cause water pollution?

_____ in the ocean are created by the gravitational pull between Earth and the Moon.

Water pollution occurs when water is __________ harmful substances.

The _______ is the constant movement of Earth's water from Earth's surface to the atmosphere and back again.

__________ are a type of glacier that cover land in a thick layer of ice and snow.

Salt water is not usable water for humans' survival because ______________.

The oceans of the world are: Pacific, Atlantic, Indian, Southern, and _______________.

_________ of Earth's surface is covered by water.

What is fresh water?

The sun powers the water cycle because ____________ is what keeps the cycle going.

In different stages of the water cycle, water may be a solid, liquid, or ______.

Which is an example of evaporation?

What is the changing of a liquid into a gas?

What percentage of water on Earth is usable fresh water found in groundwater, lakes, rivers, and streams?

Glaciers store about __________ of the world's fresh water.

_______ are the periodic rising and falling of the surface of the ocean.

What keeps our oceans in constant motion and moves large amount of water far distances?