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Plate Tectonics

Teacher: Chase
Horizontales
A boundary where plates move apart.
The Supercontinent, that existed 200 million years ago.
The name of the research ship that set out to map the ocean floor using depth sounders.
When a plate slides under another it's called_________.
Most earthquakes happen on this type of boundary _________.
What is it called when rock originally formed in flat, horizontal layers.
Magma that reaches the surface is known as __________.
A narrow, steep sided valley.
The hypothesis that states that the Earth's crust is divided into plates that move restlessly.
A boundary where plates are colliding.
Earth's most outermost layer.
Verticales
The largest ridge in the Mid-Atlantic Ocean.
Magma contains ____ particles.
Farthest layer away from the crust.
What is a plate called, when it has a piece of the ocean floor with it?
The forming of new crust-like material, that spreads apart the old sea floor on both sides of the ridges.
Japan is one of these.
The place where plates slide past each other.
Hot, melted rock.
The layer below Earth's crust is called _________.
Most ocean floor rocks are _______ rocks.