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Waves Only

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

 1. 

   The highest point of a wave is its  
a.
  crest.  
c.
  trough.  
b.
  swell.  
d.
  breaker.  
 

 2. 

   Which natural force creates ocean waves?  
a.
  wind  
c.
  gravity  
b.
  earthquakes  
d.
  sunlight  
 

 3. 

   The lowest point of a wave is its  
a.
  swell.  
c.
  crest.  
b.
  trough.  
d.
  breaker.  
 

 4. 

   The distance between a wave's crest and its trough is known as its  
a.
  wave height.  
c.
  wave length.  
b.
  water depth.  
d.
  low tide measurement.  
 

 5. 

What do we call a wave that crashes onto the shore.  These are the waves that we like to play and swim in.
a.
a tsunami
c.
the wavelength
b.
the crest
d.
a breaker
 

 6. 

In an ocean wave, the water molecules
a.
are only found in the crest
c.
are moving with the crest
b.
do not move with the wave, only in circles
d.
move across the ocean
 

 7. 

   Most water vapor in the atmosphere comes from  
a.
  the burning of fossil fuels.  
c.
  transpiration from plants.  
b.
  evaporation from soil.  
d.
  evaporation from oceans.  
 

 8. 

An earthquake in the ocean can create
a.
a breaker
c.
a density current
b.
a whitecap
d.
a tsunami
 

 9. 

   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  
 

 10. 

   Ocean water differs from freshwater in that it has  
a.
  a higher concentration of oxygen
b.
  a lower temperature.  
c.
  a higher concentration of sodium chloride.
d.
  a higher temperature.  
 

 11. 

   Which best represents the order of seafloor features as you move from the shoreline to the deep ocean?  
a.
  continental shelf à continental slope à continental rise à mid-ocean ridge  
b.
  continental rise à continental shelf à mid-ocean ridge à continental slope  
c.
  continental slope à continental shelf à continental rise à mid-ocean ridge  
d.
  mid-ocean ridge à continental rise à continental shelf à continental slope  
 

 12. 

   Most modern cities obtain their drinking water from  
a.
  desalinated ocean water.  
c.
  rivers and streams.  
b.
  surface reservoirs.  
d.
  underground reservoirs.  
 

 13. 

The map shows ocean currents in the northern Atlantic Ocean. Which location most likely has the warmest climate?  
mc013-1.jpg
a.
  location A  
c.
  location C  
b.
  location D  
d.
  location B  
 

 14. 

Which two points most likely have similar climates?  
mc014-1.jpg
a.
  points C and D  
c.
  points B and D  
b.
  points A and C  
d.
  points A and B  
 

 15. 

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

 16. 

   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.  
 

 17. 

   What are the two dominant elements in Earth's atmosphere?  
a.
  nitrogen and oxygen  
c.
  oxygen and carbon dioxide  
b.
  hydrogen and helium  
d.
  silicon and hydrogen  
 

 18. 

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

 19. 

   If you could look at the deep ocean floor, which is the best description of what you would see?  
a.
  coral reefs with many varieties of life  
c.
  flat, silt-covered, lifeless regions  
b.
  ocean ridges with active volcanoes  
d.
  high mountains and deep valleys  
 



 
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