Name: 
 

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. 

The distance from one wave crest to the next crest is...
a.
wave height
c.
wavelength
b.
trough
 

 6. 

What moves forward in a wave?
a.
the water
c.
nothing really
b.
the water and the energy
d.
only the energy
 

 7. 

The only time the water moves forward is when the crest falls over.  This is
a.
a tsunami
c.
an undertow
b.
a breaker
 

 8. 

What causes a breaker?
a.
an increase in wind speed
c.
when a crest is smaller than the trough
b.
when a trough strikes the ocean floor
 

 9. 

Waves are formed by
a.
the Moon’s gravity
c.
density currents
b.
the wind
 

 10. 

Which of these are caused by the wind?
a.
waves and tides
c.
waves and surface currents
b.
density currents and surface currents
d.
density currents and tides
 



 
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