Fragile Planet-Plate Tectonics Flashcards
What is the first layer of the earth
The crust
What is the second layer
The mantle
What is the third layer
The outer core
What is the fourth layer
The inner core
What are plate tectonics
They are plates which make up the crust of the earth. They are very slowly moving
Who proposed the jigsaw fit theory
Alfred Wenger
What is the jigsaw theory
That all the countries were together and that the plates moved them away
What are the main plate tectonics
Pacific, African, Nazca,North American, Indian, Cocos, Eurasion, Australia, Caribbean , South American, Antarctic and Arabian plate
What is an constructive plate boundary
When two plate boundaries move apart and create more land. It is when two continental move against each other
Destructive plate
One oceanic and one continental plate move against each and it destroys land
Collision plate boundary
The collision area is where the two plates meet underground
Conservative plate boundaries
It is two plates which are moving the same way
What is an earthquake
The focus is underneath the epicentre
