Restless earth: Earthquakes Flashcards
1
Q
What is the focus
A
The point where the earthquake starts. Point in the crust where pressure is released
2
Q
What is the epicentre
A
The part in the earths crust where the earthquake is felt, energy felt
3
Q
What is the fault
A
Fracture between two parts in the earths crust
4
Q
What are seismic waves
A
Shock waves of energy released from the focus, then outwards from the epicentre
5
Q
What helps predict earthquakes
A
Sensitive instruments- measure earth movements and check the stress building in rocks
Foreshocks- occur before some large earthquakes
Animal behaviour
6
Q
Where do earthquakes occur
A
They occur at all major plate margins but the most severe earthquakes are usually found at conservative and destructive boundaries
