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1
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Region along the plate boundary where one plate moves under another plate as a?
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2
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The Mid-Atlantic Ridge is one part of an 80,000-km-long system of?
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3
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Material on the ocean floor forms?
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4
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The magma that forms rises to the surface to form a chain of volcanic islands called?
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5
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Descirbes continental movement also it proposes a possible explanation of why and how the continents move. This theory is called?
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6
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The direct collision of one plate with another makes another type of plate boundary called?
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8
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Forms the thin outter shell of the earth is?
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9
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'All lands'
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14
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'All seas'
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16
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In the center of a mid-ocean ridge is a narrow valley formed as the plates separate is a?
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17
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Pieces of lithosphere each with it's own geological history?
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18
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It generally forms alomg a subduction zone?
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