3.1.5.4 Seismic Hazards Flashcards
1
Q
Where do earthquakes mostly occur
A
On plate boundaries in long,narrow belts
Many clustered around Pacific plate’s ring of fire
2
Q
What are earthquakes called that occur in middle of plates
A
Intraplate earthquakes
3
Q
What plate margins do most earthquakes occur at
A
Constructive plate margins
4
Q
What scale measures the magnitude of an earthquake
A
The Richter scale
Starts at 0 and increases by 10x magnitude each time
5
Q
What type of the scale is the Richter scale
A
Quantitative
6
Q
What’s the more qualitative, descriptive scale called
A
The Mercali scale
It uses observation
