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plate tectonics

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