6.3) What causes the plates to move? Flashcards
1
Q
What allows tectonic plates to move?
A
GRAVITY and CONVECTION CURRENT allows tectonic plates to move
2
Q
What are 2 different ways that gravity can cause plates to move
A
Slab Pull and Ridge Push
3
Q
What is slab pull?
A
gravity pulls heavy plates downwards into the subduction zone
It pulls the plate into trenches away from the ocean ridge
3
Q
What is ridge push?
A
Gravity pulls new crust downwards, pushing the older crust below it and to its side
3
Q
What source of heat drives the convection current?
A
Radioactivity deep in the Earth’s mantle
