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Oceans
Fresh Water
H2O
Water, Water Everywhere
But I'm thirsty!
100
Define evaporation.
When liquid water turns into water vapor.
100
Define condensation.
When water vapor turns back into liquid water.
100
Define reservoir.
A body of water stored for future use or for Californian's to drink.
100
What is the source of energy that drives the water cycle?
The sun.
100
Define aqueduct.
A pipe or tube that carries water from one place to another.
200
What non-living resource is found in most of Earth's water?
Salt.
200
Where can most of the Earth's fresh water be found?
Frozen in glaciers.
200
Define reclamation.
Taking water that is not fully cleaned and reusing or recycling it for some other purpose.
200
Define watershed.
An area of land in which water runs off into a particular system of creeks and rivers.
200
What is the vocabulary term that refers to how safe a water source is to use by humans, animals, or plants?
Water quality.
300
How can you remove the salt from ocean water?
Let the water evaporate, leaving the salt behind.
300
Name three things reclaimed water can be used for.
Washing cars, in toilets, watering plants, and in factories.
300
Name three things that can pollute water.
Pesticides, fertilizers, sewage, chemicals from factories and mines.
300
How do most Californians get their water?
From reservoirs. Only 40% (less than half) get their water from wells and groundwater.
300
What household item uses the most water?
The toilet. Flush!
400
Why is ocean water salty, but lakes and rivers are not?
Because rivers and creeks have carried salts to the ocean, making it salty. However, lakes and river water comes from precipitation, which does not have salt in it.
400
Explain two ways people can use less water on their yards.
Xeriscaping, drip irrigation, checking for leaks near hoses and faucets.
400
What are water's three states of matter?
Ice (solid), liquid water, water vapor (gas)
400
About what percent of Earth's water is fresh water?
About 3%.
400
What material is often added to the water supply of a community to kill any organisms and germs in the water?
Chlorine.
500
Explain why there is more salt in the ocean at the equator than near the north and south poles.
There is more salt because evaporation is happening more frequently there due to more exposure to the Sun's rays.
500
Many of the Earth's freshwater resources are becoming highly polluted. If this trend continues, how might it affect humans? Also, name three ways we can conserve water.
If this trend continues, the water available for human use will decrease to the point where there may not be enough. Conserve water: Take shorter showers, turn off water when washing hands, xeriscaping, drip lines, fix leaks, use full loads when washing clothes, etc.
500
Explain all the stages of the water cycle.
Answer should include: evaporation, condensation, precipitation, and either groundwater or run off.
500
If groundwater builds up to the point where it reaches the Earth's surface, what can occur?
The point where the water reaches the surface is called the water table. A spring, pond, or lake would form at this point.
500
Give an example of when you can see or experience evaporation happening. Give an example of when you can see or experience condensation happening.
Evaporation: A puddle drying up. Water drying off a towel. Water drying on your skin after a bath or shower. Condensation: Water drops on the mirror after a shower. Water on the outside of a cold drink.