Seismic Waves
What are the 3 seismic waves?
P-waves, S-waves, L-waves
What waves can move through all types of material?
P-waves
What are the three types of faults?
Normal, strike-slip, reverse/thrust
What is porosity?
What does dampering do?
Absorbs seismic waves so the building moves less.
What waves are the fastest?
P-waves
How do scientists know that the interior of the Earth has different layers?
They study the way seismic waves move through the interior.
What kind of fault is created from compressional forces?
Reverse/Thrust
What is permeability?
The ability of a material to let water pass through it.
High-frequency waves affect what kind of buildings?
Low-rise
L-waves
What is it called when seismic waves don't travel through Earth's whole interior?
A shadow zone
What kind of fault is created from horizontal movement?
Strike-slip
What does high permeability mean?
Water can move quickly through the material
Low-frequency waves affect what kind of building?
Sky scrapers
What kind of waves are P and S waves?
Body Waves
What two layers is the "Moho" boundary between?
The crust and mantle
What kind of fault is created from extensional forces?
Normal
What does low porosity mean?
The material cannot hold a lot of water
What is compaction?
Air is being extracted from the pore spaces in soil
The amount of time between the arrival of P and S waves.
The point inside the Earth where an earthquake starts is called?
Focus
Where on a tectonic plate can faults form?
What are the three types of soil? What is the order of particle size, from large to small?
Sand, Silt, Clay
What is consolidation?
Water is being extracted from the pore space in the soil