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7. After the water is cleaned and germ-free, where is it stored before it goes to your house?
In large storage tanks (on hills or tall towers)
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baam
Lose 10 points!
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fairy
Take points!
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25
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shark
Other team loses 15 points!
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baam
Lose 20 points!
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2. What is an artificial lake created by a dam called?
A Reservoir
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8. What are the water mains?
Water mains are the large underground pipes that carry water to our homes.
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1. Where does our water originally come from before it reaches the dam or well?
It comes from rain and snow
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9. What do we call water that has been used in our homes or factories?
Sewage
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Red sea and black sea are separate from _______.
oceans
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5. Why is fluoride added to the water?
To prevent tooth decay
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banana
Go to last place!
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seesaw
Swap points!
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rocket
Go to first place!
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thief
Give points!
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seesaw
Swap points!
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star
Double points!
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gift
Win 15 points!
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lifesaver
Give 10 points!
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4. Why is chlorine added to the water?
To kill harmful germs that are too small to be filtered out
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12. What is the main purpose of water treatment?
To clean water before supplying it to homes.
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What % of the Earth's surface is covered in water?
71%
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Water vapour is the _____ gas.
invisible
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11. What is desalination?
The process of removing salt from seawater is desalination.
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Pacific ocean covers about________ of the earth .
one third
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