POOP Flashcards
(21 cards)
What percentage of earth water is salt water?
97%
What percentage of earth water is freshwater?
3%
what percentage of earth freshwater is frozen?
About 70%
What percentage of earth freshwater is available for drinking water explain how you got this answer?
About 30%. we access to groundwater through wells and aquifers which make up 29 to 20% of freshwater we also have access to surface water which makes about less than 1% of freshwater
The majority of Earth freshwater is found where?
Glacier and ice caps
Define evaporation
Liquid water heating and turning into steam
Define transpiration
Plants releasing water that turns into steam
Define condensation
Water vapor cool back into liquid water
Define runoff
Water that moves across earth surface towards another body of water
Where is most of our freshwater located? What is the percentage?
Most freshwater is in glaciers and icebergs. They make up about 70% of earths freshwater.
Explain at least three differences between waves and currents
Waves are on the surface while currents are underwater. Currents can be formed by differences in salinity in temperature. Waves carry energy while currents are mass flow of water.
What are the causes of currents?
Surface currents are caused by wind. Deep (density) currents are caused by differences in temperature in salinity.
What is caused by underwater disturbance such as volcanoes or earthquakes?
Tsunami’s are caused by volcanoes and earthquakes
Why is it important to conserve freshwater?
If we don’t conserve freshwater, we can run out of unable water. It can also help protect other environments that need water.
What effect do currents have on earth?
They helped circulate water. Surface currents carry warm water from the equator to the poles. Deep current bring cold water from the poles to the equator.
What two things are caused by wind
Waves and surface currents
Explain the suns role in the water cycle
The sun starts the cycle by causing water to evaporate
What is the ocean floor made out of?
Sediment, mud, sand, etc.
How do currents change earth climate?
They help circulate water. surface currents carry warm water from the equator to the poles. Deep currents bring cold water from the poles to the equator.
Explain the relationship between wind, speed, and wave height
The faster, the wind, the higher the wave:))))
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