1.1 The earth’s crust is moving Flashcards
1
Q
How many years ago?
How was the supercontinent called?
A
270 million years
Pangea
2
Q
When did Pangea break up and what is the phenomenon called?
A
200 million years ago
Supercontinent
3
Q
What are the 3 parts from earth outside to inside?
A
Earth’s crust-earth’s mantle-earth’s core
4
Q
What is the thickness of the earth’s crust?
A
7-40 km
5
Q
How do you call the pieces of the earth’s crust?
A
Plates
6
Q
How fast do plates move?
A
As fast as the mail on your big toe grows
7
Q
How do you call the movement of crustal plates?
A
Plate tectonics
8
Q
Name the 3 movements of plates
A
Towards each other
Alongside each other
Away from each other
9
Q
What happens when plates move towards each other? And what = the name of what occurs?
A
Rocks get jammed and then buckle
Fold mountains
