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Hydrology Prestest

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

 1. 

For frost to be on the grass in the morning, the water vapor in the air must
a.
evaporate and freeze.
c.
condense and freeze.
b.
boil and condense.
d.
boil and evaporate.
 

 2. 

The floor of the ocean
a.
is smooth and sandy.
c.
has rivers and lakes.
b.
has mountains and trenches.
d.
is hidden and unknown
 

 3. 

On most ocean shorelines, the water rises slowly and covers the land twice a day. Then it slowly falls back. What is this movement called?
a.
current
c.
tide
b.
wave
d.
drift
 

 4. 

Which contains the greatest amount of Earth's freshwater?
a.
groundwater
c.
lakes and rivers
b.
oceans and seas
d.
glaciers and polar ice cap
 

 5. 

Dew is formed by
a.
the condensation of water vapor.
b.
frost melting just before sunrise.
c.
groundwater being pulled to Earth's surface.
d.
transpiration performed by plants.
 

 6. 

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

 7. 

Which term refers to the area at the seashore that is underwater during high tide and exposed during low tide?
a.
intertidal zone
c.
open-ocean zone
b.
neritic zone
d.
mid-ocean zone
 

 8. 

Which are the two most abundant elements dissolved in seawater?
a.
Ca and Cl
c.
Na and Cl
b.
Na and Mg
d.
Mg and Ca
 

 9. 

The ocean's tides are caused by
a.
heat from the Sun.
c.
vibrations within Earth.
b.
the Moon's gravity.
d.
strong winds.
 

 10. 

High spring tides generally result from
a.
mild earthquake activity.
b.
heavy spring rains.
c.
the alignment of Earth, the Moon, and the Sun.
d.
thawing polar ice caps.
 

 11. 

The section of a continent that lies just off the shoreline and extends beneath the ocean is called the continental
a.
plain.
c.
basin.
b.
shelf.
d.
ridge.
 

 12. 

Which process is most important to the water cycle?  
a.
flooding  
c.
evaporation  
b.
erosion  
d.
farm irrigation
 

 13. 

What causes the outside of the windshield of a car to get icy on a cold autumn night when there is no rain?  
a.
Moisture comes from inside the car and freezes.  
b.
Water vapor from the air freezes on the glass.  
c.
Water that is already on the glass freezes.  
d.
Hydrogen and oxygen in the air combine and form water, and it freezes
 

 14. 

During the water cycle, when water vapor changes to liquid water, it is called
a.
evaporation.
c.
freezing.
b.
condensation.
d.
boiling.
 

 15. 

In the morning, Mary noticed there was dew on the grass. In the afternoon, the grass was dry. What most likely happened to the water?
a.
It went into the ground.
c.
It formed clouds.
b.
It went into the air.
d.
It no longer exists
 

 16. 

Which two physical changes are essential processes in the water cycle?  
a.
oxidation and reduction  
c.
mixing and separating  
b.
evaporation and condensation  
d.
ebbing and flowing
 

 17. 

Which of these causes ocean waves?
a.
density differences
c.
the moon's gravity
b.
the Sun’s Gravity
d.
the wind
 

 18. 

Tropical seas have a high rate of evaporation. Because of this, the water in tropical seas will have higher:
a.
wave crests.
c.
daily temperatures.
b.
amounts of algae.
d.
salt concentrations.
 

 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 frozen
c.
it is too salty
b.
it is polluted
d.
it is in aquifers
 

 20. 

Use this picture and your knowledge to answer this question.
mc020-1.jpg
At which ocean feature would the greatest amount of water pressure be exerted?
a.
Continental shelf
c.
Abyssal plain
b.
Continental slope
d.
Trench
 

 21. 

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

 22. 

The amount of water on the earth
a.
is always increasing because of rain
b.
is never the same because we keep using it
c.
changes from year to year because of the weather
d.
stays the same
 

 23. 

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

 24. 

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

 25. 

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

 26. 

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

 27. 

Waves are caused by
a.
the Moon’s gravity
c.
rivers flowing into the ocean
b.
the wind
d.
changes in temperature
 

 28. 

Which of these are true about the tides?
a.
they are caused by the wind
b.
they can happen at any time and are unpredictable
c.
they are caused by the Moon and change every 6 hours
d.
there is one high tide and one low tide every 24 hours
 

 29. 

Which of these statements about currents is true?
a.
all currents are caused by the wind
b.
all currents are caused by the sun
c.
some currents are caused by a difference in either density or temperature
d.
all currents move in the same direction
 

 30. 

Which of these is the largest ocean?
a.
Atlantic
c.
Indian
b.
Pacific
d.
Southern
 

 31. 

Where will you find the tallest mountains on Earth?
a.
in Alaska, Denali
b.
in Washington state, Mt. Ranier
c.
Mt. Everest in the Himalayas
d.
the Island of Hawaii is the tallest mountain on Earth
 

 32. 

The flattest place on Earth is
a.
in Oklahoma on the Great Plains
c.
the Abyssal Plain
b.
the Sahara Desert
d.
the continental shelf
 

 33. 

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

 34. 

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

 35. 

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



 
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