Water Quiz

Why is water important for all living things?

• It is only used for drinking.

• It is not necessary for living things.

• All living things need water to carry out their body processes.

• Water is only important for plants.

What percentage of Earth's surface water is salt water?

• About 50 percent

• Roughly 97 percent

• Nearly 75 percent

• Approximately 25 percent

Where is most of the Earth's fresh water located?

• In the rivers and lakes

• In the atmosphere

• Underground

• In the oceans

What is the water cycle?

• The process by which water is only used by plants.

• The cycle of water being frozen and then melting.

• The continuous process by which water moves from Earth's surface to the atmosphere and back.

• The cycle of water being polluted and then cleaned.

Which processes are included in the water cycle?

• Condensation and precipitation

• Evaporation, transpiration, and condensation

• Filtration and sedimentation

• Freezing and melting

What are the streams and smaller rivers that feed into a main river called?

• Watersheds

• Tributaries

• Divides

• Oxbow lakes

What is the term for the land area that supplies water to a river system?

• Divide

• Tributary

• Watershed

• Oxbow lake

What is the difference between ponds and lakes?

• Lakes are usually smaller and shallower than ponds.

• Ponds are usually smaller and shallower than lakes.

• Ponds are usually deeper and larger than lakes.

• There is no difference between ponds and lakes.

How can lakes form?

• By the movement of Earth's crust that forms deep rift valleys.

• When a volcano blocks a river and forms in the empty craters of volcanoes.

• All of the above.

• None of the above.

What process can build up nutrients in a lake, leading to its eutrophication?

• Sunlight reaching the bottom of the lake.

• Bacteria breaking down bodies and releasing nutrients into the water.

• The formation of oxbow lakes.

• Natural processes and human activities.