Name:     ID: 
 
Email: 

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.
1%
c.
3%
b.
3.5%
d.
97%
 

 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. 

Why is it important not to have a well for drinking water near a landfill?
a.
pollution from the dump might leach down into the aquifer
b.
it is alright to dig a well near a landfill
c.
it might get hit by a garbage truck
d.
the well might flood the garbage dump
 

 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. 

The Earth’s surface
a.
has the same amount of land and water
b.
has about three times more water than land
c.
is covered mostly by land
d.
is covered by more water than land
 

 10. 

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
 

 11. 

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

 12. 

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

 13. 

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
 

 14. 

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
 

 15. 

If we add together the amount of water found in rivers, lakes, ice caps and underground, 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
 

 16. 

Which factor is MOST important in determining how much groundwater can be stored in underground rock?
a.
the rock's geologic age
c.
the rock's porosity
b.
the rock's hardness
d.
the rock's location
 

 17. 

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

 18. 

The salts in the sea come from
a.
acid rain.
c.
weathering and erosion of rocks.
b.
organisms that live in the sea.
d.
particles falling from space.
 

 19. 

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
 

 20. 

If you could put all the Earth’s water in a 5 gallon bucket, how much would be freshwater?
a.
enough to fill a soft drink cup
c.
½ of  the bucket full
b.
most of the bucket
d.
about 2 cups
 



 
         Start Over