Depth below Earth’s surface where all the pores of a material are completely filled with groundwater

How much of Earth’s water is freshwater?

How much of the Earth's water is found in the Oceans?

Measure of amount of salts dissolved in seawater

Permeable underground layer through which groundwater flows

When matter changes from a gas to a liquid

Why is water important

Water that falls downslope on Earth's surface into streams, rivers, or lakes

Deep hole drilled into the ground to reach a reservoir of groundwater

Process when water changes from a liquid to a gas

At what temperature (in Celsius) does water boil?

Upper boundary of zone of saturation that rises during wet seasons and drops during dry periods

What are some of the major threats to the Earth's water supply?

Low-lying area (bog or marsh) that is covered in water a large part of the year and supports specific plant species

At what temperature (in Celsius) does water freeze?

All solid and liquid forms of water (rain, snow, sleet, hail) that fall from clouds

Natural/human-made body of water that forms when a land depression fills with water

Where is most of Earth’s freshwater found?

Is water important?