Multiple Choice Identify the
choice that best completes the statement or answers the question.
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1.
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. Which kind of waves can pass through gas,
liquid, AND the Earth's core:
a. | P waves | c. | Love
waves | b. | S waves | d. | Rayleigh
waves |
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2.
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Who first developed the theory of continental
drift?
a. | J.A. Wilson | c. |
Herman Hesse | b. | Alfred
Wegene | d. | Harry Hess |
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3.
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What is it called when one plate is driven beneath
another?
a. | subduction | c. |
subsidence | b. | subtraction
| d. | sea floor spreadin |
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4.
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What is Geophysics?
a. | a way of drilling for oil. | d. | none of the above | b. | a branch of
geology that uses indirect techniques to deduce the composition of the
earth. | e. | b and c are
both correct | c. | a branch of physics centered around the
earth
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5.
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Which is denser, continental crust or oceanic
crust?
a. | Continental | c. | They are the
same | b. | Oceanic | d. | They are constantly
changing |
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6.
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Who coined the term “seafloor
spreading”?
a. | Harold Hess | c. | Albert
Eisenstein | b. | Alfred
Wegener | d. | Robert Oppenheimer |
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7.
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Which type of magma is more likely to cause an explosive
eruption?
a. | Basaltic | c. | Felsic | b. | Mafic | d. | Andesitic |
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8.
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What provides a unifying theme upon which we can understand
very wide arrays of processes that are taking place in the earth's crust?
a. | The Theory of Evolution | c. | The theory of
volcanic hot spots | b. | Plate Tectonics
Theory | d. | Rock divergence theory. |
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9.
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Geophysicists employ which of the following methodology to develop a better
understanding of the earth’s interior?
a. | Utilize high-tech equipment to drill deep into the
earth’s upper mantle and gather samples in order to better understand its geological
make-up. | d. | Both ‘b’ and
‘c’ | b. | Use computer and
laboratory models to simulate conditions deep within the earth.
| e. | All ‘a’ , ‘b’, and
‘c’ | c. | Analyze variations in the earth’s temperature,
magnetic field, and gravity. |
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10.
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Continental crust is between____ km thick, while
oceanic crust is between ___ km thick:
a. | 25-70 km; 5-10 km | c. | 55-70
km; 80-95 km | b. | 5-10 km; 25-40
km | d. | 80-95 km; 55-70 km |
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11.
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What is Oceanic crust primarily
composed of?
a. | Iron magnesium
silicates | c. | Aluminum
silicates | b. | Iron oxides | d. | Potassuim silicates |
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12.
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The seafloor becomes _____ the further it moves from mid-ocean
ridges.
a. | older | c. | hotter | b. | younger | d. | less dense |
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13.
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Which of the following
helped showed that continental drift exists?
a. | Plant
fossils
| d. | Areas of ancient
rock | b. | Climate zones
| e. | All of the above | c. | placement of mountain
ranges |
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14.
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Geologists think that that the Earth experiences a
reverse in magnetic polarity approximately every______________years, and that the last such reversal
might have taken place________________years ago.
a. | 700,000/ 500,000 | c. | 500,000/ 700,000 | b. | 1 Million/
700,000 | d. | 1 Million/ 500,000 |
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15.
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Over the last 100 years, the Earth’s magnetic
field has__________
a. | Gotten stronger | c. | Maintained a constant rate | b. | Gotten weaker | d. | Fluctuated |
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