Water Unit Review

97% of the water on earth is _________, making it undrinkable for humans.

• fresh water

• salt water

• ground water

• surface water

Watershed is....?

• Most of the landmass that makes up North America

• Almost 80 % of Canada’s surface water

• An area from which all water drains downhill to a common destination.

• Canada's fun water park

When water can pass through rock or sediment it is said to be ____.

• impermeable

• transparent

• permeable

• extrusive

What is an aquifer?

• A place underground that stores water.

• A water pump

• A water purifier

• A place that sells aquifers

Water stored below the Earth's surface is called:

• Groundwater

• Bogs

• Water in the ground

3% of Earth's surface water is _________ water.

• Fresh

• Salt

Warm water contains less dissolved oxygen than cold water. Increasing the temperature of water by artificial means is called __________.

• Deforestation

• Acidity

• Salinity

• thermal pollution

Water pollution that comes from many sources is considered...

• point source pollution

• nonpoint source pollution

• thermal pollution

• ocean pollution

Which of the following is a way to save water?

• Water the lawn at high noon

• washing half loads of dishes

• taking shorter showers

• running the water while brushing your teeth

What is sewage sludge?

• solid product of water treatment

• everything flushed

• safe, solid waste

• an easy, cheap problem to solve