Plate Tectonics

Question 1

what are the 3 different types of tectonic plate boundaries

Answer 1

divergent (constructive) convergent (destructive) and transform (conservative)

Question 2

what happens at a convergent plate boundary

Answer 2

This occurs when plates move towards each other and collide. When a continental plate meets an oceanic plate, the thinner, denser, and more flexible oceanic plate sinks beneath the thicker, more rigid continental plate. This is called subduction. Or if two continental plates meet, they will collide and grow where they two plates met and form a mountain.

Question 3

what happens at a divergent plate boundary

Answer 3

A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common, and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust.

Question 4

what happens at a transform plate boundary

Answer 4

At a transform boundary, tectonic plates slide past each other in opposite directions, causing earthquakes, displacing rocks, and creating ridges and valleys along each side of the strike-slip fault.

Question 5

what causes the plates to move

Answer 5

convection current

Question 6

layers of the earth

Answer 6

core, outer core, mantle, crust

Question 7

examples of the 3 boundaries

Answer 7

c= pacific ring of fire
d=mid atlantic ridge
t=san andreas fault

Question 8

2 types of crust

Answer 8

oceanic and contenental

Question 9

Explain why the physical states of the inner and outer core differ.

Answer 9

inner core is hotter than the outer core

Question 10

Explain why the overall amount of crust on Earth has stayed the same despite this destruction.

Answer 10

The lost surface is balanced by the formation of new oceanic crust along divergent margins by seafloor spreading,

Question 11

what layer of the earth are rocks formed and deformed

Answer 11

crust (lithosphere)