40. The El Nino-Southern Oscillation can be best described as: a. Relative chang

Question

40. The El Nino-Southern Oscillation can be best described as:
a. Relative changes between two different atmospheric pressure systems.
b. The relationship between sea surface temperature and atmospheric pressure.
c. Tidal differences between coastal Peru and Indonesia.
d. Variation in wind speed over the Pacific Ocean.
e. Wind speed and wind direction differences along the equator.
41. It has been hypothesized that if the climate continues to warm, we may end up in a permanent El Nino state.
a. True b. False
42. Tsunami are generated primarily in relation to:
a. Subduction zone earthquakes
b. Underwater landslides
c. Underwater volcanic eruptions
d. Asteroid impact into the ocean
e. All of the above are equally as likely to
occur
43. A tsunami is considered to be a:
a. Capillary wave
b. Deep-water wave
c. Reflected wave
d. Refracted wave
e. Shallow water wave
44. In the United States one can find semidiurnal mixed tides along the:
a. Atlantic coast
b. Cape Cod
c. Gulf of Mexico coast
d. Florida Keys
e. Pacific Coast
45. When the side of the earth that faces the moon experiences a high tide, the side of the earth that is opposite from the
moon will have a(n):
a. high tide
b. low tide
c. neap tide
d. diurnal tide
46. What is true about the formation of a spit?
a. It is formed from the erosion of tombolo’s.
b. It forms due to a transition of high wave energy to low wave energy.
c. It forms due to a transition of low wave energy to high wave energy.
d. A harbor is required for it’s formation
47. Which one of the following is NOT commonly used to describe a wave:
a. Wave height
b. Wavelength
c. Wave period
d. Wave bar
48. Which of those listed is an erosional feature found on a coastline?
a. Wave cut platform
b. Spit
c. Tombolo
d. Baymouth bar
49. What is beach drift?
a. The transportation of sand within the surf zone
b. The path the sand particles take along the beach face
c. The explanation as to the formation of a spit
d. Is not an important part of sand transportation along a coastline.
50. Sand is supplied to the California coastal region primarily by:
a. Coastal erosion
b. Local biological activity
c. Rivers that flow from the Sierra Nevada Mountains
d. Ocean floor upwelling

Explanation / Answer

40.(d) Variation in wind speed over the Pacific Ocean.

El Nino is a periodic variation in winds and sea surface temperatures over Pacific Ocean.

41.False

It can't be predicted that warm temperature leads to permanent conditions of EL Nino but the frequency will definitely increase.

42.(e)

All the given reasons are causes of the tsunami as all these leads to abrupt movement of ocean floor.

43.(e) shallow water waves

Due to the long wavelenghts the tsunami behaves as shallow water waves even in deep water.

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