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Science 8: Section 1.0 Quiz

Last updated over 3 years ago

13 questions

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Question 1

1.

While walking down the hallway at school you overheard two of your classmates discussing something about water resources and the number 74% came up. From your understanding of water, this percentage represented the amount of

fresh water in lakes

water stored in ice

area of Earth covered by water

fresh water underground

Question 2

2.

Which of the following statements is NOT correct?

Humans can only drink fresh water

Very little fresh water is locked in icecaps

Canada has 9% of the world's fresh water

Most of the world's water is salty

Question 3

3.

When a water sample was mixed with soap flakes and shalen it did not produce many bubbles. This indicates that the water sample

was hard water

had high levels of chlorine

contained living organisms

was soft water

Question 4

4.

An advertisement arrived at your household that encouraged homeowners to purchase a reverse osmosis unit. From your knowledge of this technology, you would know that it is used to

remove only salt from water

remove odours from tap water

remove salts, chemical and other pollutants from water

purify water for house plants

Question 5

5.

The laboratory in your school has a distillation apparatus for producing pure water. Which of the following statements best describes the process it uses for producing this type of water?

Water is quickly heated then slowly cooled and condensed into pure water

Water is converted to vapour and condensed into pure water

Water is heated to drive off contaminants to from pure water

Water is heated and cooled many times to remove contaminants

Question 6

6.

Which of the following pairs would represent the majority of fresh water on Earth?

icecaps and groundwater

lakes and streams

groundwater and streams

ice and lakes

Question 7

7.

What are two things that water quality technicians test for? (Be precise in your answer)

Question 8

8.

The amount of salt in water is called what?

Question 9

9.

What is term called when it states "water rich in calcium"?

Question 10

10.

This chemical is used to treat water supplies. What is it called?

chlorine

hydrogen

krypton

oxygen

Question 11

11.

Explain this statement "Not all fresh water is drinkable."

Question 12

12.

One of your friends wrote down a quotation from a television program about survival in the wilderness. A "survival expert" said that human beings can safely drink ANY type of water if they have to and no harm will come to them. Is this statement true or false? Explain your answer.

Question 13

13.

There is a water crisis in North America that is largely affecting the Colorado River. From the youtube video that we watched the scientist talked about the "Bathtub Ring" that is found behind the Hoover dam. What does this mean?