Tectonic Plates

Question 1

How the tectonic plates are moved?

Answer 1

Convection currents in the mantle cause the plates to move - converging (colliding), diverging (separating) and transforming (sliding past each other).

Question 2

Direction in which tectonic plates can be moved?

Answer 2

Divergent boundary, convergent boundary, transform boundary.

Question 3

Divergent boundary?

Answer 3

2 tectonic plates move apart from each other - sometimes cause mid-ocean ridges by seafloor spreading as the magma comes up from the cracks in the oceanic crust and it cools.

Question 4

Convergent boundary?

Answer 4

2 tectonic plates colide. subduction can happen if oceanic crust collides with continental curst.

Question 5

Transform boundary?

Answer 5

2 tectonic plates slide past each which trigger earthquakes.

Question 6

Subduction zone?

Answer 6

Plates converge and the denser oceanic crust subducts under the continental crust and into the mantle.

Question 7

What happens when ocean and continental plates collide?

Answer 7

Since oceanic crust is denser it will subduct under the continental crust.

Question 8

What happens when two continental plates collide?

Answer 8

Creates mountain ranges.

Question 9

How is new crust formed at a divergent boundary?

Answer 9

When tectonic plates move apart the seafloor spreads and a crack appears. Magma from the mantle comes out and cools, forming a new crust.