Characteristics of passive continental margins include all of the following exce
ID: 285613 • Letter: C
Question
Characteristics of passive continental margins include all of the following except a. thick sediment accumulation b. little volcanic and earthquake activity c. deep-sea trenches d. broad continental shelves e. shallow coastal waters 47. Which does NOT contribute to relative rates of sea level rise? a. eustatic sea level rise b. subsidence c. isostatic rebound d. thermal expansion of water e. tides 48. Regarding sea level, which is NOT true: a. sea level has been constant for much of Earth's history b. sea level has been much higher in the past c. sea level has been much lower in the past d. at present, sea level is rising 49. How does global circulation of sea water in the oceans affect sea level? a. It doesn't b. It can cause feedback effects that change rates of freezing or thawing of ice in polar waters c. It modulates tides d. It moves water from the poles toward the equator 50. Which is NOT a major component of Milankovich cycles? a. Precession of the Earth b. Obliquity of the Earth c. Eccentricity of the Earth's orbit d. Changes in tidal forcing over the year 51. Which does NOT contribute to variability in the solar radiation reaching the Eart a. The Earth's angle of inclination b. The eccentricity of Earth's orbit c. The amount of ice on the Earth d. Variability in solar radiation due to sun spots e. Changes in the direction of the Earth's axis of rotation 52. Which contributes LEAST to relative sea level rise? a. Melting of Arctic ice b. Melting of Antarctic ice c. Thermal expansion of water as it warms d. Land subsidence e. Groundwater extractionExplanation / Answer
46 Since passive continental margins is because of divergenent plate boundary hence we won't find deep sea trenches which is the feature of convergent boundary, hence the option "c" is correct.
47 Tides are not the permanent rise of water hence it won't count in relative rates of sea level rise, hence the option "e" is correct.
48 Sea level is not constant as it varies with subsidence, uplift, global water level etc and hence it is very variable when we talk about earth's history, hence the option "a" is the answer.
49 The global circulation of water takes place because of the convection current present in the oceans and the energy to drive this cycle is heat from the sun and the difference that exists between the amount of heat received at equator and at poles, hence the option "d" is correct.
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