Earths layers + plate boundaries

What is the outermost layer of earth called?

The crust

What are the two different types of crust?

Oceanic and continental

What is the thickest layer of earth?

The mantle

What is the mantle made of?

Semi liquid molten magma

What is at the very centre of the earth?

The core

What is the outermost layer core made of?

Liquid Metal ( iron and nickel )

What is earths core made of?

Solid metal ( iron )

Why is the earths core solid and not liquid?

Pressure forces particles together

What are the 4 types of plate boundary?

Constructive, destructive, collision and conservative

What does a constructive plate boundary involve? ( include crust type and direction of movement )

Any 2 crust of the same type moving away from each other

How do constructive plate boundaries create volcanos?

The two plates move away from each other creating a gap for magma to seep through to the surface

What does a destructive plate boundary involve? ( include crust type and direction of movement )

1 oceanic crust and 1 continental crust moving towards each other

What can destructive plate boundaries create?

Deep sea trenches, volcanos, earthquakes, mountains

At a destructive plate boundary the _______ crust __________ the other crust

Oceanic, subducts below

What does a collision plate boundary involve? ( include crust type and direction of movement )

2 continental crusts moving towards each other

What can collision plate boundaries create?

Fold mountains, earthquakes

What does a conservative plat boundary involve? ( include crust type and direction of movement )

2 continental crust sliding against each other in the same direction or opposite

What can conservative plate boundaries create

Powerful earthquakes

What drives the movement of earths crust

Convection currents

Where do convection currents occur

The mantle

Convection currents work use to the _____ and _____ of the magma

Heating and cooling or rising and falling

Which plate boundaries can make volcanos?

Destructive, constructive

Which plate boundaries can make earthquakes?

Destructive, constructive, collision, conservative