Geography- Restless Earth

HideShow resource information
Name 3 features of Continental Crust.
Older the oceanic, less dense and it can not sink into the mantle
1 of 10
Name 3 features of Oceanic Crust.
Newer than continental, denser and it can sink into the mantle
2 of 10
What is continental drift?
Heat from RADIOACTIVE DECAY heats up the rock so it rises to the LITHOSPHERE. The rocks rises to a certain point where it is cooler and so it falls creating CONVECTION CURRENTS. This makes the TECTONIC PLATES move apart so continental drift happens.
3 of 10
Explain what happens at a destructive plate margin.
When the oceanic crust goes under (subducts) the continental crust. Molten rock then builds to make a volcano.
4 of 10
Explain what happens at a constructive plate margin.
The two plates move apart and the hot molten rises rises and cools at the top to form new land.
5 of 10
Explain what happens at a conservative plate margin.
The two plates move side by side.
6 of 10
What is collision?
When the two pieces of crust push up against each other to form a fold mountain
7 of 10
What are fold mountains?
Places where layers of rock have been crumpled as they have been forced together. They can be formed at destructive or collisional plate boundaries.
8 of 10
How are fold mountains formed?
Sediment ACCUMULATES in shallow seas creating layered sedimentary rocks-COMPRESSION takes place. Two plates move together which starts to CRUMPLE the rocks. The rocks start to form folds which are pushed upwards.
9 of 10
How are mid ocean ridges formed?
Two oc
10 of 10

Other cards in this set

Card 2

Front

Name 3 features of Oceanic Crust.

Back

Newer than continental, denser and it can sink into the mantle

Card 3

Front

What is continental drift?

Back

Preview of the front of card 3

Card 4

Front

Explain what happens at a destructive plate margin.

Back

Preview of the front of card 4

Card 5

Front

Explain what happens at a constructive plate margin.

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Natural hazards resources »