plate tectonics

Question 1

name the 9 major world plates

Answer 1

Pacific plate, North American plate, South American plate, Nazca plate, Eurasian plate, African plate, Indian plate, Indo- Australian plate, Antarctic plate

Question 2

if two plates are sliding past each other, what’s it called

Answer 2

transform plate boundary (earthquakes, fault line)

Question 3

If tow plates go away from each others what’s it called

Answer 3

A constructive plate boundary (volcanoes, mid ocean ridge)

Question 4

what’s it called when two plates go into each other

Answer 4

a destructive plate boundary (volcanoes, earthquakes, fold mountains)

Question 5

What happens when an oceanic crust collides with a continental crust?

Answer 5

The oceanic crust is dragged down into the mantle where it’s recycled into mantle. It’s called subduction. And deep trenches form in the seabed when a subduction happens e.g. Marianas Trench.

Question 6

what happens when two continental crusts collide?

Answer 6

The crusts crumple upwards making fold mountains e.g the Himalayas

Question 7

What happens when a transform plate boundary happens?

Answer 7

It causes a line on the earths surface called a fault line, e.g the San Andreas fault line in California

Question 8

What happens when plates get stuck while a transform plate boundary’s happening?

Answer 8

They build up great pressure until they slip, releasing the pressure. It causes a very bad earthquake, e.g the 1994 Northridge earthquake along the San Andreas fault line.