Dynamic Earth Flashcards
1
Q
Define Pangea
A
When all the continents were connected in 1 landmass
2
Q
Inner core
A
Solid centre of the earth. Extremely high temp, up to 6,000 C
3
Q
Outer core
A
Molten nickle + iron
4
Q
Mantle
A
Under the crust
Magma
Moves around very slowly - convection curents
5
Q
Crust
A
Thin outer layer of the earth
solid rock
6
Q
Plate boundary
A
Where plates meet
7
Q
Plate
A
Large slab of the earth’s crust
8
Q
Describe Convection currents
A
1)The earths core heats the magma causing it to rise up toward the crust
2)As it rises it cools
3)The cooling makes the lava heavy + sink down again
4)This cycle repeats, causing convection currents
5)The convection currents make the plates move slowly. They slide past, separate or collide into eachother
9
Q
define convection currents
A
The circular movement of magma in the mantle
