Test 3

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Crossword puzzle

Across

2. Pollution caused by people is called ______________ pollution.
4. When water is taken from a stream, lake, etc., and used on land, it is called __________ use.
8. Where water collects underground.
9. The rate at which water moves.
11. Everyone must ___ water wisely.
12. Filtration occurs in a ________ tank.
14. When you use water to get rid of soap, you _____.
16. Saltwater _________ is one source of natural pollution.
20. Pollution can get into groundwater from a ____ in an old underground tank.
21. If you pay for the amount of water you use, you are paying a _______ rate.

Down

1. Another word for contamination.
3. The amount we pay for water should cover the ____ of supply.
4. What you dig to find water.
5. When water is used for swimming and sailing, we call this use ________.
6. Leftover matter that we consider useless and try to dispose of.
7. Sludge is sometimes taken to a ____fill site for disposal.
10. Free from pollution.
13. We ______ water and wastewater to get rid of impurities.
15. When water is used in its natural setting, it is called this kind of use.
17. The mining industry uses water to separate rocks from _______.
18. Charging a ____ rate for water used does not encourage water conservation.
19. Most of our electricity comes from hydroelectric _____.
22. Another word for poisonous.

Fill in the blanks

1. A "water witch" is said to locate water underground with the use of a __________.
   
   
2. Groundwater is found in wells and springs which have their sources in __________.
   
   
3. The water rate structures which encourage people to conserve water are the ______ or the _______ rate and the _________ rate.
   
   
4. Water seeps into the ground through the process of _________.
   
   
5. The two basic ways we use water are in its natural setting or _______; and taking it from the stream and using it on land – ________ use.

True or false

T  F	1.  Approximately 75% of Canadians rely on groundwater for their water supply.
T  F	2.  Groundwater spends about one year underground.
T  F	3.  If pollution is "anthropogenic," this means it was caused by people.
T  F	4.  During the summer months about half of all treated water is sprayed onto lawns.
T  F	5.  Most Canadians who pay for their water, pay a flat rate.
T  F	6.  Both instream water users and withdrawal users can contaminate the water supply.
T  F	7.  On average, Canadians pay $500 per 1000 litres of tap water.
T  F	8.  People who live on the prairies pay the highest costs in Canada for their water.
T  F	9.  About one-third of all the fresh water in the world is found underground.
T  F	10. Impermeable rock is rock which lets water filter through.

Question time

List five causes of groundwater pollution:

What are two examples of withdrawal use?

What are two examples of instream use?

Describe one simple way to prevent groundwater pollution.

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