Test 2: Chapter 5 Flashcards
(12 cards)
1
Q
What causes most of the deaths regarding an earthquake:
A
- Building collapse
- Tsunami
2
Q
What is a Fault:
A
-Fracture in the crust on which movement has occurred
3
Q
What an Epicenter:
A
-Location on surface about the focus
4
Q
What is a Focus:
A
-Location where movement begins on the fault
5
Q
What powers fault movement:
A
-Plate tectonics
6
Q
Where do most earthquakes take place:
A
-Along plate boundaries
7
Q
What is a Seismic Wave and describe the 4 kinds:
A
- Vibrations caused by an earthquake
- Slower surface waves
- Faster body waves underground
- P waves fastest push material parallel
- S waves after P wave push material perpendicular
8
Q
How are earthquakes measured:
A
-By reading the height of seismic waves on a seismograph
9
Q
Name the 2 aspects used to measure an earthquake:
A
- Magnitude = shaking
- Intensity = damage on buildings
10
Q
Name and explain the 3 kinds of faults:
A
- Normal fault = moves down
- Reverse fault = moves up
- Strike slip = slides horizontally
11
Q
How do the numbers on the Richter scale differ:
A
-Times 10 each number
12
Q
Max val of richter:
A
-None
