Evidence for Plate Tectonics Flashcards
1
Q
Q: What modern technology tracks plate movement?
A
A: GPS satellite tracking.
2
Q
Q: How do mid-ocean ridges support plate tectonics?
A
A: They show where new oceanic crust forms as plates move apart.
3
Q
Q: What happens at deep ocean trenches?
A
A: One plate is subducted beneath another.
4
Q
Q: How fast do tectonic plates move?
A
A: Typically a few millimeters per year, about the rate of fingernail growth.
