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Earth's Water

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

An underground layer of permeable rock that contains water is
a.
impermeable
c.
an aquifer
b.
a reservoir
d.
a glacier
 

 2. 

How much of the Earth’s water is useable by man?
a.
mc002-1.jpg
c.
mc002-3.jpg
b.
mc002-2.jpg
d.
mc002-4.jpg
 

 3. 

How does the amount of freshwater compare to the amount of saltwater?
a.
there is more freshwater
c.
there is only a tiny amount of freshwater
b.
there is twice as much saltwater
d.
there is the same amount of each
 

 4. 

Which of the following statements is true?
a.
1 % of the Earth’s water is salty
b.
3 % of the Earth’s water is underground
c.
97 % of the Earth’s water is fresh
d.
97 % of the Earth’s water is salty
 

 5. 

The total salinity of the world’s oceans is
a.
50 %
c.
25%
b.
15%
d.
3.5%
 

 6. 

Most of the Earth’s freshwater is found
a.
in lakes and rivers
c.
in icecaps and glaciers
b.
in the atmosphere
d.
in the groundwater
 

 7. 

The process of removing salt from ocean water so that it is drinkable.
a.
infiltration
c.
is called hydroscopic chlorination
b.
has not been invented
d.
desalination
 

 8. 

The scientific name for all the water on the Earth is
a.
the ocean
c.
the atmosphere
b.
the hydrosphere
d.
the lithosphere
 

 9. 

In order from greatest amount to least amount, the Earth’s water is
a.
fresh water, salt water, frozen fresh water
b.
salt water, frozen fresh water, liquid fresh water
c.
fresh water, frozen fresh water, salt water
d.
frozen fresh water, salt water, liquid fresh water
 

 10. 

What kind of rock has spaces or pores in it where water can be stored?
a.
impermeable
c.
permeable
b.
salinated
d.
igneous
 

 11. 

When rain water infiltrates or soaks into the ground, it becomes what?
a.
runoff
c.
groundwater
b.
a spring
 

 12. 

Most of the water on the Earth is found
a.
in river and a lakes
c.
in the oceans
b.
in the polar icecaps
d.
underground
 

 13. 

A large lake that is used to provide water to a city is
a.
usually underground
c.
an aquifer
b.
a reservoir
d.
created by desalination
 

 14. 

Look at this graph,  mc014-1.jpg

If we add together the amount of water found in rivers, swamps,  lakes, ice caps, glaciers, and groundwater, we
a.
find out how much water is on the Earth.
b.
find out how much water we can use
c.
find out how much fresh water is on the Earth
d.
find where the best place to get water is
 

 15. 

What word describes how much salt is in the ocean?
a.
permeable
c.
salinity
b.
desalination
d.
useable
 

 16. 

In rural areas, most people get their drinking water from
a.
reservoirs
c.
rivers and lakes
b.
aquifers
d.
desalination plants
 

 17. 

Why is more than half of the world’s freshwater supply difficult to use?
a.
it is groundwater and is difficult to locate
c.
it is located deep within the Earth, where drilling is difficult
b.
lakes and streams are heavily polluted
d.
it is frozen into the polar icecaps and glaciers
 

 18. 

Only 3% of the water on Earth is freshwater. About 60% of that water is not available for man's use. Why is this?
a.
it is polluted
c.
it is in aquifers
b.
it is frozen
d.
it is too salty
 

 19. 

Look at this graph, most of the water on the Earth is what?
mc019-1.jpg
a.
freshwater
c.
icecaps and glaciers
b.
saline
d.
lakes
 

 20. 

Which graph shows how the Earth is divided between land and water?
a.
mc020-1.jpg
c.
mc020-3.jpg
b.
mc020-2.jpg
 



 
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