Geology 117: The Oceans
Self-Administered Quizzes
- Quiz No. 6 -- Covers topics 26-30
- 1. Standing waves, or seiches
- A. are like waves on a shallow beach
- B. are created only by strong tidal forces
- C. are like waves sloshing in bathtub
- D. are only seen in the southern hemisphere
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- 2. The wavelength of an ocean wave
- A. never changes
- B. does not depend on the period
- C. does not depend on the frequency
- D. None of the above
-
- 3. The gravitational attraction of the Moon is
- A. equal everywhere across Earth's surface
- B. balanced by centrifugal forces everywhere across the earth's
surface
- C. always greater than centrifugal forces
- D. always less than centrifugal forces
- E. None of the above
-
- 4. A diurnal tide pattern
- A. has two high tides each day
- B. has one high tide each day
- C. has uneven high and low tides
- D. None of the above
-
- 5. The energy put into waves at the sea surface increases
with increased duration of wind blowing in a constant direction,
increased wind speed, and increased ____________ .
- A. latitude
- B. temperature
- C. fetch
- D. steepness
- E. declination
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- 6. The velocity of deep-water waves increases with
- A. increasing depth of water
- B. increasing wavelength
- C. increasing height
- D. A and B
- E. A, B, and C
-
- 7. Swells with a wavelength of 200 m will become shallow-water
waves when water depth decreases to
- A. 100 m
- B. 20 m
- C. 10 m
- D. 2 m
-
- 8. Which of the following parameters increase as a wave moves
onshore?
- A. velocity
- B. wavelength
- C. height
- D. period
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- 9. The changing __________ of the Sun and the Moon accounts
for diurnal and semidiurnal-mixed tides.
- A. declination (angle of the path through the sky with respect
to the horizon)
- B. distance
- C. orbit
- D. gravitational attraction
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- 10. Tides of high amplitude occurring about every two weeks
at the new and full Moon are called
- A. neap tides
- B. spring tides
- C. diurnal tides
- D. semidiurnal tides
- E. rotary tides
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- 11. Longshore transport of water and sediment
- A. occurs when waves move onto the beach obliquely (not perpendicular)
- B. occurs when waves motion is perpendicular to the beach
- C. stops whenever there is an obstruction such as a groin
- D. stops whenever a river enters the ocean
-
Answers: 1=C, 2=D, 3=E, 4=B, 5=C, 6=B, 7=C,
8=C, 9=A, 10=B, 11=A