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Water Unit Review
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Can underground water reach the surface of the Earth?
Yes, springs, seeps, human activity
What is groundwater?
Water beneath the surface of the Earth between the soil and rocks
How is it possible for Earth to have liquid water?
Earth has an atmosphere and is the perfect distance from the sun
Why was there no oceans when the Earth was formed?
Earth was too hot and the elements needed for water were inside the Earth
Why does the water table in aquifiers rise and fall?
Recharge and discharge of aquifier because of human or natural processes
When does a cloud produce percipitation?
Water droplets or ice crystals combine and become large enough to overcome air resistance
Why do we move more slowly in the water than out of the water?
Gaseous air is more easily to move through than liquid water; water has high adhesion
Name a source of pure water in nature
There are none
Is the water we drink completely pure?
No
Why is salt put on roads during the winter?
Salt lowers the freezing point of water, preventing ice formation
List three ways to save water at home
Turning off the tap, shorter showers, better appliances
What is the proccess off making water drinkable called?
Water treatment/purification/potabilization
What are the two main types of industrial pollution?
Metals and Toxins
The rapid growth of algae and bacteria is called
Eutrophication
What percent of our fresh water is used by agriculture?
79%
What are the steps of the water cycle?
Precipitation, evaporation, condensation, (and transpiration)
Earth's underground water is stored in ______
aquifers
How much salt does salt water typically contain?
35 g/L
Most fresh water is in the ocean (T/F)
False
What percent of water on Earth is liquid?
75%
Water is more dense as a solid (T/F)
False
The water in glaciers is in what form?
Solid
Most water is inside of rocks (T/F)
False
Name 2 things water does in organisms
Life in cold climates, Transport substances, Plant nutrition, Hydrostatic skeletons
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