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OCEAN CIRCULATION-WAVES,TIDES,OCEAN CURRENTS
33. Which of these BEST describes the cause of waves in the 34,35,36 1 K E
ocean?
a) high and low tides
b) evaporation of water
c) wind blowing across the surface of the ocean
d) ridges and trenches on the bottom of the ocean

34. A tsunami is an unusually large wave caused by 34,35,36 1 K A

a) an earthquake or volcano
b) increased gravitational pulls when the sun and moon
line up
c) a heat wave
d) extreme winds

35. The two main parts of a wave are? 34,35,36 1 C E
a) Wavelengths and wave heights.
b) Swells and whitecaps.
c) Crests and troughs.
d) Rises and dips.

36. An earthquake causes a tsunami because force from the 34,35,36 1 K A
quake?
a) meets the force of currents flowing in a different
direction.
b) Blows surface water away from the shore.
c) Pulls water down toward the source of the quake.
d) Pushes a large body of water up from the ocean
floor.

37. A tsunami is ______________ . 34,35,36 1 K A
a) a tidal surge caused by a storm
b) large wave caused by an undersea event
c) an earthquake which causes a large wave
d) an undersea landslide

38. What does the word "tsunami" mean in Japanese? 34,35,36 1 K E

a) Tidal wave
b) Harbor wave
c) Killer wave
d) Century wave

39. What is frequently a warning sign of an impending 34,35,36 1 U H