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Why would we know this
100
The normal freezing point of water in Farenheit degrees.
What is 32 degrees.
100
Water covers this percentage of the Earth.
What is 75%.
100
Percentage of water on Earth suitable for human use.
What is 1%.
100
The bending of light as it enters the water.
What is refraction.
100
The use of sand doesn't melt ice but provides this for automobiles.
What is traction.
200
The upward movement of water in plants.
What is capillary action.
200
What percentage of water on Earth is either in ice caps or glaciers.
What is 2%.
200

The scientific term for when an item will not mix with water

Hydrophobia

200

The scientific term when an item can dissolve/mix in with water 

Hydrophilic

200
The transformation of water from a gas to a liquid.
What is condensation.
300
The removal of water from a plant or animal by evaporation.
What is dehydration.
300
Placing water droplets on a penny demonstrates this scientific principle.
What is surface tension.
300
Amount of time it takes for ground water to recycle itself.
What is 10,000 years
300
If all the water on Earth were one gallon, this measurement would be for human use.
What is 1 teaspoon.
300
Adding this substance disrupts surface tension.
What is soap.
400
Adding this item to water will disrupt surface tension.
What is soap.
400
Punching three holes in a bottle and observing the greatest force of water comes from the lowest hole demonstrates this principle.
What is water pressure.
400
Percentage of human body that is made up of water.
What is 70%.
400
The ability for a substance to disappear in the water.
What is solubility.
400
When water can no longer absorb a substance.
What is saturation.
500
The weight in pounds of one cubic foot of water.
What is 65 pounds.
500
The freezing temperature of water when applied with salt.
What is 20 degrees Farenheit.
500
The only type of rock that can float.
What is pumice.
500
Greek scientist who experimented with water displacement.
Who is Archemedes.
500
The scientific term for the ability of an object to float.
What is buoyancy.