Water Basics
The Water Cycle
Water and Life
100

This term describes all the water on Earth's surface, underground, and in the air.

What is the hydrosphere?

100

Water falls to Earth as rain, snow, sleet, or hail in this step of the water cycle.

What is precipitation?

100

All living things need this liquid to survive.


What is water?

200

About 97% of Earth’s water is found in this large body.

What is the ocean?

200

Plants release water into the atmosphere through this process.


What is transpiration?

200

This is the largest source of freshwater on Earth, but it’s frozen.


What are glaciers?

300

This process turns liquid water into vapor in the water cycle.


What is evaporation?

300

This term refers to the continuous movement of water on, above, and below the surface of the Earth.


What is the water cycle?

300

These tiny living organisms can be found even in drops of pond water.

What are microorganisms?

400

This type of water is safe to drink and use for cooking.

What is fresh water?

400

Clouds are formed during this stage of the water cycle.

What is condensation?

400

Too much of this in water can make it unsafe to drink or harm aquatic life.

What is pollution?

500

This word describes water that collects underground in porous rock layers.


What is groundwater?

500

This is the movement of water over the surface of the land, often leading to rivers and lakes.


What is runoff?

500

This scientific term describes the amount of salt in water.

What is salinity?