E.8 Flashcards
1
Q
what is Theory of Plate Tectonics
A
The lithosphere
is broken up into large areas called plates
2
Q
what is a diverging boundary
A
Two of Earth’s plates are moving apart. Lava flows from the ridge to form new oceanic crust
3
Q
what is a converging boundary
A
Plates are moving toward each other. Causes the formation of mountains and trenches.
4
Q
what is a transform boundary
A
Plates slide sideways past each other. Earthquakes occur here
5
Q
what is subduction
A
When the plates push together, the heavier, thinner oceanic crust is forced down below the lighter, thicker
continental crust
6
Q
How have scientists determined the boundaries of tectonic plates?
A
By looking at patterns and locations of volcanoes, earthquakes, oceanic trenches, and oceanic ridges.
