Title: Default for Water
Course: World of Water

Q: The chemical formula of water is H_2O.
- True (Yes, the chemical formula of water is H_2O. That means that in every molecule of water there are two hydrogen atoms bonded to one oxygen atom.)
- False (No this is true, the chemical formula of water is H_2O. That means that in every molecule of water there are two hydrogen atoms bonded to one oxygen atom.)
A: True

Q: The average person is 5 percent water.
- True (No, the statement was false. A person can be anywhere between 45 and 75 percent water. Healthy is around about 55 to 60 percent water.)
- False (Yes the statement was false. A person can be anywhere between 45 and 75 percent water. Healthy is around about 55 to 60 percent water.)
A: False

Q: A water footprint, or virtual water, is the amount of water used in the entire production and/or growth of a specific product.

Remember 10 thing you should know about water, and match the relationship between the items.
- 1 kilogram (2.2 lbs) of beef has a water footprint of | 16,000 liters (4,226.8 gallons)
- one sheet of paper has a water footprint of 10 liters | (2.6 gallons)
- one cup of tea has a water footprint of 35 liters | (9.2 gallons)
- one microchip has a water footprint of 32 liters | (8.5 gallons)

Q: Shower 10 minutes, takes 1.5 gallons/minute
- True (Sorry, the answer is wrong. take a look to How_Much_Water_Does_It_Take.pdf file)
- False (well done! Shower 10 minutes, takes 3.8 gallons/minute)
A: False

In less than 300 words, compare the use of water in the world's poorest countries and richest countries.
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Q: Every 20 seconds, a child dies from a water-related disease.
- True (A sad but true statistic! (Source: http://water.org/learn-about-the-water-crisis/facts/) See the Six Thinking Hats activity to be a part of solution.)
- False (No, it is sadly true! (Source: http://water.org/learn-about-the-water-crisis/facts/))
A: True
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Q: Recycled water that can still be used around the house is called __?__ water.
A: grey
Feedback ("grey"): Yes. Recycled, 'grey water' is becoming an increasingly important source of usable water for human use.
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Q: Match the rivers with the country they (mostly) flow in.
- Amazon | Brazil
- Hudson | USA
- Volga | Russia
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Q: What percentage of bottled water bottles end up in landfills or in litter?
- 86% (Multiply the amount of water in a bottle by 6.74 and you'll find the amount of water that it takes to make the bottle. Don't forget that the water is shipped in semi-trucks, cargo ships and by freight, then refrigerated in convenience markets. All that transportation and electricity burn fossil fuel and don’t forget that the bottle, too, is made of fossil fuel. Litter, it seems, is the least of our problems.)
- 52% (No, sorry.)
- 7% (No, a lot more that that!)
- 99.9% (No, sorry.)
A: 86%

Q: On average, how much of water in the home is lost through leaks?
- 33.9% (Now that is a LOT! Incorrect and hopefully not what your home leaks...)
- 13.7% (Correct! However, not every home leaks this much. The problem is some homes leak ridiculous amounts and lower the curve for the rest of us. Here are a few common symptoms of a leak: An always moist lawn, a toilet that you have to jiggle the handle and unusually high water bills.)
- 5% (Hmm, wouldn't that be good.)
- 1.2% (That would be fantastic but sadly not a reality!)
A: 13.7%

Q: Water that has been used once but it's still clean enough to do other jobs is called...
- Black water (No, sorry. Fish tank water, hot water bottle water, dishwater, shower water and clothes washer water are all examples of grey water. You can use this water to clean exterior siding, water the garden or scrub out your bird bath. Just don’t dump it down the sink.)
- Solid water (No, sorry. Fish tank water, hot water bottle water, dishwater, shower water and clothes washer water are all examples of grey water. You can use this water to clean exterior siding, water the garden or scrub out your bird bath. Just don’t dump it down the sink.)
- Green water (No, sorry. Fish tank water, hot water bottle water, dishwater, shower water and clothes washer water are all examples of grey water. You can use this water to clean exterior siding, water the garden or scrub out your bird bath. Just don’t dump it down the sink.)
- Grey water (Correct! Fish tank water, hot water bottle water, dishwater, shower water and clothes washer water are all examples of grey water. You can use this water to clean exterior siding, water the garden or scrub out your bird bath. Just don’t dump it down the sink.)
A: Grey water

Q: What percentage of Earth's water is freshwater?
- 10.9% (No, sorry. The earth's surface is 74% water. 97% of that water is salt water. Of the remaining three percent, 77% of that is ice. 22% of that 3% is ground water and the river water, lake water and wetlands account for less than 1% of the total water on the planet. Fresh water is precious indeed.)
- 3% (Yes, correct! The earth's surface is 74% water. 97% of that water is salt water. Of the remaining three percent, 77% of that is ice. 22% of that 3% is ground water and the river water, lake water and wetlands account for less than 1% of the total water on the planet. Fresh water is precious indeed.)
- 50% (No, sorry. The earth's surface is 74% water. 97% of that water is salt water. Of the remaining three percent, 77% of that is ice. 22% of that 3% is ground water and the river water, lake water and wetlands account for less than 1% of the total water on the planet. Fresh water is precious indeed.)
- 17.2% (No, sorry. The earth's surface is 74% water. 97% of that water is salt water. Of the remaining three percent, 77% of that is ice. 22% of that 3% is ground water and the river water, lake water and wetlands account for less than 1% of the total water on the planet. Fresh water is precious indeed.)
A: 3%

Q: El Nino (pronounced ) is a regular global climatic event that causes:
- Severe flooding in Australia (No, sorry. It's quite the opposite! See http://en.wikipedia.org/wiki/El_Ni%C3%B1o-Southern_Oscillation)
- Severe drought in South America (No, sorry. It's quite the opposite! See http://en.wikipedia.org/wiki/El_Ni%C3%B1o-Southern_Oscillation)
- Freezing winters in Mid/Northwest America (No, sorry. It's quite the opposite! See http://en.wikipedia.org/wiki/El_Ni%C3%B1o-Southern_Oscillation)
- None of these effects (Correct! El Nino causes quite the opposite effects of those stated above. A good place to learn more is this Wikipedia article.)
A: None of these effects
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