Seismic Waves II
Which waves are the fastest?
P waves
What is the Japanese translation of the word - "tsunami"?
Harbor wave
What are the two plates moving either side of the S.A.F.L
Which type of seismic wave is the most destructive
surface
What is the instrument called which detects when the earth moves
seismometer or seismograph
What happens to the L & R waves are the surface?
They combine and propagate together shifting the surface.
What is the difference between an ocean wave and a tsunami?
Ocean wave generated by wind in the atmosphere
Tsunami generated by a sudden shift or movement in the crust caused by tectonics and an E.Q
What type of fault and boundary is this?
Strike slip (right lateral)
Transform plate boundary
Which seismic wave will be felt first
P wave
Which E.Q would have a greater damage on a city, deep focus or shallow focus?
shallow focus - concentrated and proximity to surface
Which waves are known as 'compression' waves?
P or Primary waves - by their method of propagation
What happens to the coastline water when a tsunami is approaching the land?
Water recedes and is pulled out towards the deeper sections of the coastline - further out to sea.
Which plate is Los Angeles connected to?
Pacific
What is the term called after the earthquake with issues and complications
secondary effects of a disaster
Which waves create the largest movements on a seismograph
surface waves
How do R or Rayleigh waves propagate?
Orbital motions (circles)
What is the speed of a tsunami energy wave in the open ocean?
up to 500 miles per hour
What type of plate boundary is connected to the S.A.F.L on either end?
Convergent
Which area would be the most prone to destruction during an earthquake? (put in order of vulnerability)
stone buildings
wood structures
glass windows
reinforced steel and titanium rods in triangular formation with counter-weight
sand castle
sand castle
wood
glass
stone
reinforced with counter weight
What is the term given to loose material held in suspension within a tsunami and carried across the coastline?
Debris
What is the term for the amount of energy in a wave?
Amplitude
What is the term given to a sudden tectonic movement whereby the above ocean is shifted and deformed?
water displacement
Which one of these cities down S.A.F.L not pass under?
San Francisco
Oakland
Berkeley
San Jose
Monterrey
San Diego
San Diego
What is the term for solid rock being vibrated and temporarily having liquid characteristics?
Liquifaction
What is the term called when the tsunami wave crashes over the coastline, bounces off higher terrain and heads back towards the coastline?
Wave reflection