問題一覧
1
(1) What is the name of the supercontinent that consisted of all present continents?
Pangea
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(2) When did the supercontinent begin to break apart?
about 250 million years ago
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(3) How many lithospheric plates are there?
about 17
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(4) How many major lithospheric plates are there?
about 7
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(5) Lithosphere consists of
the crust and the mantle.
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(6) The thickness of the lithosphere is about
100km
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(7) How do plates move in a conversion boundary?
Towards each other.
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8) How do plates move in a diversion boundary?
Away from each other.
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(9) How do plates move in a transform boundary?
Pass each other.
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10) Which of below is an example of convergent tectonics?
The Andes
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(11) Which of below is an example of divergent tectonics?
East African Rift
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12) Which of below is an example of transform tectonics?
The Dead Sea
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13) Earthquakes occur at
All
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14) At what type of plate boundary do shallow-focus earthquakes occur?
Transform
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15) What is the plate boundary where a huge earthquake is likely to occur?
Convergent
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16) Mountain ranges are formed at
Convergent boundaries.
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17) The Great East Japan Earthquake occurred between the Pacific Plate and
the North American plate.
18
18) Nankai trough is on the boundary between the Philippine sea plate and
The Eurasian plate.
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(19) The speed of the plate movement is
1-10cm/year
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20) What is the place where magma erupts within a plate rather than at a plate boundary, like Hawaii?
hot spot