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- 1. Multiple Choice
Which source provides the energy that causes most waves to form?
currents
earthquakes
sunlight
wind
- 2. Multiple Choice
Which two words identify the scientific parts of a wave?
breaker and crest
crest and trough
current and breaker
drift and current
- 3. Multiple Choice
Which event causes tides?
the blowing of the wind
the movement of warm and cool water
the interaction of the moon, the Sun, and Earth
the mixing of surface water and deep ocean water
- 4. Multiple Choice
Which factor drives surface ocean currents?
wind energy
solar energy
pull of the moon
movement of turbines
- 5. Multiple Choice
Which best describes a tsunami?
large powerful wave caused by an earthquake
when the waves hit the shore at an angle and transport sand
alternating rise and fall of the ocean
an irregular climate event caused by ocean currents in the Pacific Ocean
- 6. Multiple Choice
Which phrase describes the tidal range?
the cause for the rotation of wind in a circular pattern
the difference between levels of high tide and low tide
the water that flows away from the shore and moves sand with it
the difference between the times the high tide and low time come in
- 7. Multiple Choice
When will the waves at the shore be the smallest and calmest?
when the tide is receding
when upwelling occurs
when the wind is not blowing
when the tide is coming in
- 8. Multiple Choice
Which phrase best describes surface currents?
up-and-down ocean movement caused by wind
waves that hit the shore at an angle and transport sand
streams of warm water flowing through the ocean and caused by wind
waves that approach the shore and cause their crests to fall into their troughs
- 9. Multiple Choice
Which ocean movement do power plants use to produce usable energy?
currents
drifts
tides
tsunamis
- 10. Multiple Choice
How frequently do most coastal areas experience high tides?
twice a day
twice a month
four times a day
four times a month
- 11. Multiple Choice
Why are electrical outputs from a turbine generator highest during a spring tide?
A high tide comes in faster.
The gravitational pull of the moon is less.
The Sun and the moon pull in opposite directions.
The difference between high tide and low tide is the greatest.
- 12. Multiple Choice
Which factor contributes to the formation of tides that turn turbines to create energy in the ocean?
wind speed
water density
Earth’s rotation
water temperature
- 13. Multiple Choice
Which phenomenon causes oceans to bulge?
the blowing wind
the Coriolis effect
the moon’s gravity
the rotation of Earth
- 14. Multiple Choice
Which phrase describes neap tides?
occur four times a day
produce extra-low tidal ranges
caused only by the pull of the moon
occur at the same time as spring tides
- 15. Multiple Choice
Which statement explains what upwelling causes?
Upwelling causes tides to rise and fall.
Upwelling causes changes in the direction of currents.
Upwelling causes nutrients, minerals, and tiny organisms to rise.
Upwelling causes currents in the Pacific Ocean to change direction.
- 16. Multiple Choice
How are currents in the Pacific Ocean affected by El Niño?
Currents travel more slowly.
Rip currents are frequently formed.
All currents become deep ocean currents.
Warm water moves to the east instead of to the west.
- 17. Multiple Choice
Convection refers to the movement of heat through a fluid, such as water. Which best describes one way that convection influences the circulation of ocean water?
Cold water at the surface flows toward the poles and sinks as it cools.
Deep, warm water flows toward the equator and rises as it cools.
Warm water at the surface flows toward the poles and sinks as it cools.
Deep, cold water flows toward the equator and rises as it cools.
- 18. Multiple Choice
Which statement describes how convection moves heat in the ocean during non-El Niño (normal) years?
Convection moves heat toward the west.
Convection moves heat toward the east.
Convection moves heat toward the north.
Convection moves heat toward the south.
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