Siesmo
What is the study of earthquakes?
Seismology
What is a convergent boundary?
Where two tectonic plates collide
What is the point INSIDE the earth where the quake begins called
The focus
Which wave is first?
P waves
What scale measures the earthquake’s magnitude?
Richter scale
What is the instrument that records earthquakes?
Seismograph
What is a divergent boundary?
Where two tectonic plates push apart
What is the point ON THE SURFACE where the quake begins called?
The epicenter
Which wave causes the most destruction?
Surface waves
What is a base isolator?
Shock absorbers under foundation
What tell scientists exactly when an earthquake begins and is the paper tracing of the quake?
Seismogram
What is a transform boundary?
When one tectonic plate slides against another
What hypothesis says that if an active fault hasn’t had an earthquake lately that when it does it will be strong?
Gap Hypothesis
Which are body waves?
P waves and S waves
What is a mass damper?
A weight in the roof of a building that controls earthquake movement.
How does the energy move through the earth?
Seismic waves
What is elastic rebound?
When rocks snap back into original shape
What is magnitude?
The strength of an earthquake
Which wave stretches the rock sideways?
S waves
What is it called when an old structure is fitted with new technology?
Retrofitted
Name the 3 types of seismic waves.
P Waves, S Waves,and Surface Waves
What is elastic deformation?
When rock is under stress and looks like a stretch rubber band
What is intensity?
The amount of damage caused by waves
What is an earthquake hazard map?
A map that shows the potential risk for earthquakes in a certain area
Name 3 things you should do before, during, and after an earthquake
Before: Store extra food supplies
During: Lay down under table
After: Do not go into a structure until it is checked out