History Of Life On Earth worksheets
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Most of the earth's surface is covered with
land.
polar ice.
salt water.
fresh water.
An example of salt water is
a lake
a river
an ocean
tap water
Groundwater is an important source of drinking water especially in Florida. The water is found in an underground reservoir called a /an
aquifer.
hydrofer.
tide pool.
riparian zone.
Most of the Earth’s water is found in
glaciers.
lakes.
oceans.
rivers.
What percent of the earth is covered by water?
20%
50%
70%
85%
Where is most of the Earth’s freshwater located?
in lakes
in rivers
in oceans
in glaciers
About 3% of the water on Earth is freshwater. Only about 40% of that freshwater is available for human use. Why is so much freshwater unavailable for human use?
It is frozen.
It is polluted.
It is salt water.
It is in aquifers.
Three percent of the water on Earth is freshwater. Less than 0.5% of all the freshwater on Earth is found
underground.
in aquifers.
in rivers and lakes.
frozen, in ice caps and glaciers.
Water on Earth is either freshwater or saltwater. What is the percent ratio of freshwater to percent saltwater on Earth?
1% freshwater : 99% saltwater
3% freshwater : 97% saltwater
30% freshwater : 70% saltwater
50% freshwater : 50% saltwater
This is a picture of a large sheet of ice that moves very slowly across the land. This sheet of ice covers the land and is only found where temperatures are extremely cold. What is this large sheet of ice called?
glacier
lake
pond
sea
Water covers over 70% of planet Earth and most of the water is salt water. Which number on the map of the United States represents a body of salt water?
1
2
3
4
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