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