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"Name: _ _ _ _,--______ Class: _ _ _ _ _ _ _ _ Date: _ _ __
Dynamic Oceans Test
Multiple Choice
Identify the choice that best completes the statement or answers the question.
]. Once the atmosphere cooled enough, water vapor condensed and _ _ began to fall onto Earth.
b. precipitation
c. lava
d. ash
a. dust
2. Earth's _ _ may have formed from water vapor given off by volcanoes.
b. soil
c. oceans
d. minerals
a. continents
3. What is the effect of wind energy on waves?
a. It makes large waves smaller.
b. It gives all waves an equal size.
c.
d.
4. Movement of sediment along the beach in a zig-zag
a. sand bar
b. surf
c.
It makes small waves larger.
It makes large waves larger.
pattern
beach drift
d. wave refraction
5. The force that causes tides is
a. wind.
b. refraction.
c. gravity.
6. The addition of sand to beaches to stabalize erosion.
b. tidal delta
c. tombolo
a. beach drift
7. When the moon, Earth, and sun are in line, the tidal (ange is _ _.
a. unchanged
b. unpredictable
c. 10west
d.
friction.
d.
beach nourishment
d.
greatest
8. Sandbars are formed by
a. undertow.
b. refraction.
c. rip currents.
d. longshore currents
9. Surface currents are caused by _ _.
a. upwelling
b. cold water
c. warm water
d. winds
10. Turbulent water breaking along the shoreline.
a. surf
b. break waters
c. estuary
d. emergent coast
- - II. If you were floating in a raft in the Gulf Stream, you and the raft would _ _.
a. not move with the water
c. move back and forth
b. move ina circular motion
d. move with the current
12. A low ridge of sand running parallel to the coast 3-30km off shore is a
a. spit
b. baymouth bar
c. ' barrier island
d. tidal flat
13. Which of the fol1owing causes gyres to form?
a. deep currents
b. the Coriolis effect
14. Surface currents affect _ _.
a. high tides
b. the trade winds
c.
d.
the Equatorial Countercurrent
West Wind Drift
c.
the ocean bottom
the climate on continents
d.
15. What happens to a water particle in a wave during a single wave period?
c. It moves in one complete circle.
a. It moves in the direction of the wave.
b. It moves in a half circle.
d. It does not move.
16. The distance that wind blows across an area of the sea to generate waves is known as
a. wavelength.
b. fetch.
c. tide.
d. wave period.
Name: ______________________
ID: A
;.-"'.
17. The factors that determine the size of a wave are wind speed, fetch, and
a. the length of time the wind blows.
c. water salinity\
b. water temperature.
d. amount of sediment on the ocean floor
18. Smaller bodies of saltwater frequently enclosed by land.
a. lakes
b. ponds
c. seas
d. oceans
19. Waters off the western coasts of continents are usually colder because of the _ _ origin of ocean curr~nts
passing oy.
.
a. polar
b. equatorial
c. tropical
d. warm
20. Wavelength is the horizontal distance between successive wave _ _.
a. particles
b. breakers
c. crests
d. tides
21. Largest tidal bulges and troughs are aspects of a
a. neap tide
b. tidal flat
c. spring tide
d. tidal delta
22. The swift, warm current that flows northward along the east coast of the United States is called the
a. North Atlantic Current.
c. North Equatorial Current.
b. West Wind Drift.
d. Gulf Stream.
23. The major cause of tides is the
. a. Earth's rotation.
c. Earth's revolution around the sun.
b. gravitational pull of the moon on Earth
d. tidal bulge of Earth. and its waters. 24. Deep ocean circulation is called
a. a gyre
c. tidal circulation
b. a longshore current
d. thermohaline circulation
25. A coast that is often high irregular due to oceans flooding the lower reaches of river valleys.
a. emergent coast
b. submergent coast c. wave-cut platform d. tidal delta
26. Deep currents are caused by
a. differences in density of ocean water.
c. the Coriolis effect.
b. global wind belts.
d. continental barriers.
27. Structure built parallel to the coast to slow the action of waves onto the shore or harbor.
a. spit
b. seawall
c. breakwater
d. groin
28. Slow-moving, cold currents may rise to the surface. This _ _ of cold water carries food particles tp the
surface, resulting in areas of good fishing.
a. upwelling
b. crest
c. tide
d. trough
29. Experiences uplift or drop in oceans water level forming wave-cut platforms.
a. submergent coast b. ebb tide
c. spring tide
d. emergent coast
30. The tidal range at the Bay of Fundy is the _ _ on Earth.
a. greatest
b. narrowest
c. smallest
d. most predictable
31. Ocean ship noted for most of the exploration of the deep oceans
a. Ij.M.S. Challenger b. Kontiki
c. Resolution
d. Titanic
32. A tidal pattern characteristic of a single high. tide and single low tide.
a. mixed tidal pattern
c. semidiurnial tidal pattern
b. diurnal tidal pattern
d. ebb tide
33. To reduce erosion along a stretch of beach, you might build a short wall called a
a. breaker.
b. trough.
c. groin.
d. sandbar.
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ID: A Ridge of sand connecting a island to an island or the mainland.
a. tom bolo
b. spit
c. sand bar
Two consecutive wave crests pass a given point in one
a. wavelength.
b. swell.
c. wave period.
Dissolved calcium is carried to the ocean by
a. animals
b. rivers
c. wind
An isolated remnant of coast left by the collapse of a sea arch
a. sea stack
b. barrier island
c. tombolo
d.
groin
d.
trough.
d.
gravity
d.
beach nourishment
Waves strike the coastline head-on instead of at an angle as a result of
a. undertow.
b. longshore currents c. fetch.
d. refraction.
The oceans were formed when precipitation filled low areas on Earth called _ _.
a. basins
b. troughs
c. salt marshes
d. harbor channels
One characteristic of the Antarctic Bottom Water is
a. warmth.
b. low salinity.
c. high density.
d. swiftness.
The lowest point on a wave is the wave _ _.
a. trough
b. crest
c. height
d. tide When the sun, moon, and Earth form a 90" angle, we have _ _ tides. a. spring
b. neap
c. normal
d. fall When the wind blows across a body of water, _ _ between the water and air causes the water to move. a. a turbine
b. gravity
c. friction
d. density
A drowned river mouth is called a
a. delta'
b. estuary
c. tidal delta
d. tombolo
The gulf that touches the west coast of Mexico.
a. Gulf of California b. Persian Gulf
c. Gulf of Oman
d. Gulf of Mexico
One source of the ocean's salts is _ _
c. animals
a. groundwater
b. clouds
d. plants
Essay
47. Describe how a wave changes as it nears shore.
48. Describe q,efactors that affect the size of surface waves.
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