Earthquakes Flashcards
1
Q
What are the three type of Waves?
A
Primary Waves
Secondary Waves
Surface Waves
2
Q
Describe Primary Waves
A
- Fastest seismic waves
- Longitudinal wave
- Able to travel through liquids and solids
3
Q
Describe Secondary Waves
A
- Slower Seismic Waves
- Transverse waves
- Travel through solids only
4
Q
Describe Surface Waves
A
- Slowest Seismic waves
- They can only travel on the surface of the earths crust
- Cause most destruction
5
Q
Describe Surface Waves
A
- Slowest Seismic waves
- They can only travel on the surface of the earths crust
- Cause most destruction
6
Q
What are the 2 factors that affect the speed of wave?
A
- The density of the material heavier density = Slower Wave
- The stiffness of the material
Stiffer Material = Quicker Wave
7
Q
Both factors increase…
A
lower in the mantle but stiffness effect winds so the p & s waves increase with depth because go the speed change, the waves refract
