Restless Earth-Tectonic plates

HideShow resource information
What is the centre of the earth called and made up of?
A ball of solid iron and nickel called the core
1 of 21
What is around the core and what is it and what does it do?
Mantle which is a semi molten rock that moves very slowly
2 of 21
What is the outer layer of Earth and how does it look like and how deep?
crust and very thin(20km)
3 of 21
What is the crust divided into?
tectonic plates (floats on the mantle)
4 of 21
What are the two types of plates called?
continental and oceanic plate
5 of 21
What is the continental crust?
thicker and less dense
6 of 21
What is the oceanic crust?
thinner and more dense
7 of 21
Why are the plates moving?
Becuase the rock in the mantle is moving
8 of 21
what is it called when plates meet?
boudaries or plate margins
9 of 21
What are the three types of plate margins?
destructive margin,constructive margin,conservative margin
10 of 21
What is a destructive margin?give an example?
Two plates are moving towards eachother( along the eat coast of Japan)
11 of 21
What happen to the plates at a destructive margin?
The oceanic plate meets a continental plate , the denser oceanic plate is forced down into the mantle and destroyed.
12 of 21
What does this create?
volcanoes and ocean trenches
13 of 21
What is an ocean trench?
Very deep sections of the ocean floor where the oceanic plate goes down
14 of 21
What happen when the two continental plates meet?
The plates smash together
15 of 21
Is the crust made at a destructive margin?
No crust is destroyed
16 of 21
What is a contructive margin ? For example?
Where two plates are moving away from eachother(Mid atlantic ridge)
17 of 21
What does the magma do?
Magma(moltem rock) rises from the mantle to fill up the gap and cools, creating new crust
18 of 21
Is the crust made at a constructive margin?
yes
19 of 21
What is the conservative margin?For example?
Two plates are moving sideways past eachother or moving in same direction at different speeds(along the west coast of USA)
20 of 21
Is the crust crated at the conservative margin?
it is created or destroyed
21 of 21

Other cards in this set

Card 2

Front

What is around the core and what is it and what does it do?

Back

Mantle which is a semi molten rock that moves very slowly

Card 3

Front

What is the outer layer of Earth and how does it look like and how deep?

Back

Preview of the front of card 3

Card 4

Front

What is the crust divided into?

Back

Preview of the front of card 4

Card 5

Front

What are the two types of plates called?

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 Restless Earth resources »