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plate tectonics

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Across
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Thick lithospheric plates that are made of andesite and granite and form the continents. Less dense than oceanic
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Long chain of undersea mountains
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A lithospheric plate boundary where two plates move apart.
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Lithospheric plate boundary where two plates come together
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An ancient huge landmass composed of earlier forms of today's continents, an ancient supercontinent
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Process where hot, less dense magma rises, and cool more dense magma sinks. This force moves tectonic plates
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A theory explaining how the pieces of earth's surface (the plates) move.
Down
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The idea that continents move around on Earth's surface
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Heated lower mantle rock that rises toward the lithosphere because it is less dense than surrounding mantle.
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Valley in the ocean created when one lithospheric plate subducts under another
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Lithospheric plate boundary where two plates slide by one another.
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A hypothesis that new sea floor is created at mid-ocean ridge and in the process,the continents are pushed apart from one another.
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A process that involves lithospheric plates sinking into the mantle.
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Thin lithospheric plates that are made of andesite and granite and form the continental.