MOVEMENT

OF MANTLE

Copy things

down that are

black24L

WHAT CAUSES TECTONIC PLATES TO MOVE?

Tectonic plates are lying on top of the

mantle

WHAT CAUSES TECTONIC PLATES TO MOVE?

Movements in the mantle cause

tectonic plates to move

WHAT CAUSES TECTONIC PLATES TO MOVE?

WHAT DO YOU THINK? THINK-PAIR-SHARE

Which one is heavier/more dense:

Hot things or cold things

Example: hot water vs cold water,

hot air vs cold air

WHAT DO YOU THINK? THINK-PAIR-SHARE

CONVECTION

Convection—movement of particles caused by difference in temperature

Circulates moves in circular pattern

WHAT DO YOU THINK? THINK-PAIR-SHARE

Where is it hottest in earth’s layers?

Where is it coldest?

CONVECTION AND THE MANTLE

hot mantle rises

cool mantle sinks

1. heat from core heats up rocks in

mantle

mantle cools (more dense)

rock expands(less dense)

CONVECTION AND THE MANTLE

1. heat from core heats up rocks in mantle

2. rock expands(less dense)

3. hot mantle rises

4. mantle cools (more dense)

5. cool mantle sinks

CONVECTION AND THE MANTLE

Convection of mantle causes

tectonic plates to move

DRAW!