Hazardous Earth Flashcards
1
Q
Define earthquake
A
The violent shaking of the earths crust as a result of the movement of the earths plate.
2
Q
Define volcano
A
Landform created as a result of the eruption of molten rock, ash and gases from an opening in the earth’s surface
3
Q
Define plate tectonics
A
The study of the movement of plate boundaries (e.g earthquakes and volcanoes)
4
Q
Define continental crust
A
The part of the oceanic crust that makes the continents; it’s made of granite between 25km thick and 100km thick
5
Q
Define oceanic crust
A
The part of the earths crust which is under the oceans it’s made of basalt and is between 5km and 10km thick
6
Q
What is a constructive plate boundary
A
When two plates move away from each other
