Structure of the Earth Flashcards
1
Q
What its the lithosphere?
A
The rocky, outer part of the Earth - which is broken into tectonic plates
2
Q
What is the asthenosphere?
A
The layer that tectonic plates moves over, and it drives plate movement
3
Q
What is the mesosphere?
A
The inner part of the earth, up to 2900km.
4
Q
What three things does the Earth compose of?
A
- Crust
- Mantle
- Core
5
Q
What are the three rheological components of the earth?
A
- Lithosphere
- Asthenosphere
- Mesosphere
6
Q
What is the oceanic crust?
A
Dense, thinner plate that lies under the ocean
7
Q
What is the continental crust?
A
Much thicker plate made up of granite, silica, and aluminium. Less dense too.
8
Q
How many plates is the lithosphere split into?
A
7 or 8.
