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Question 1

How long can the average human survive without water?

One day

a few days

a few weeks

a month

Question 2

What percentage of the Earth's water supply is fresh water?

3 %

8%

15%

20%

Question 3

When water is cooled, what does it do ?

Contract

Expand

don’t know much

No

Question 4

At what temperature does water boil?

80 C

100 C

150 C

200 C

Question 5

At what temperature does water freeze?

- 10 C

0 C

5 C

10 C

Question 6

Which two elements make up water?

Hydrogen and oxygen

Sodium and calcium

Calcium and oxygen

Hydrogen and sodium

Question 7

In which step of the water cycle does liquid water transform into gas?

Condensation

Transpiration

Precipitation

Evaporation

Question 8

What is the average pH level of pure water?

3

5

7

9

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