Forces in Earth's Crust
Seismic Waves
Measuring Earthquakes
Monitoring Earthquakes
Earthquake Safety
100
This force in earth causes rocks to slip past each other.
What is shearing?
100
Name the three types of seismic waves.
What are p-waves, s-waves and surface waves?
100
This scale measures earthquakes by damage.
What is the Mercalli scale?
100
The lines a seismograph produces.
What are seismograms?
100
The risk of earthquakes along where __________ are active.
What are faults?
200
These are the three types of faults.
What are normal, reverse and strike-slip faults?
200
The Richter scale is a rating of an earthquake's magnitude based on the earthquakes's _____________.
What are seismic waves?
200
These are the three scales to measure earthquakes.
What are the Mercalli, Richter and moment magnitude scales?
200
Two of the four kinds of motion detectors used to monitor earthquakes.
What are tiltmeters, creep meters, laser-ranging devices or GPS satellites?
200
You do this during an earthquake.
What is drop, cover and hold?
300
The two different sides of a fault.
What are the hanging wall and foot wall?
300
This instrument records seismic waves.
What is a seismograph?
300

What is the difference between the focus and the epicenter of an earthquake?

Epicenter is on surface directly above the focus which is where stress breaks the rocks first.

300
The force that opposes the motion of one surface as it moves across another surface.
What is friction?
300
The safest shape for a building structure in an earthquake.
What is a pyramid?
400
An upward arc fold.
What is an anticline?
400
Seismic waves cause a seismograph to move in this fashion.
What is vibrate?
400

This is any change in the volume or shape of the Earth's crust.

What is a deformation?

400
Geologists map hidden faults this way.
What is finding where seismic waves bounce off of.
400
Name three things that can cause damage after an earthquake is over.
What are tsunamis, aftershocks and liquefaction.
500
This occurs when tension creates two normal faults.
What is fault-block mountain.
500
These are vibrations that travel through the earth's surface carrying energy that is released during an earthquake.
What are seismic waves?
500
This rating system estimates the total energy released by an earthquake.
What is the moment magnitude scale?
500
Tiltmeters monitor the tilting or the raising of the ground this way.
What are two bulbs filled with liquid that flows from side to side when the ground tilts.
500
A building designed to reduce the amount of energy that reaches a building during an earthquake.
What is a base-isolated building?
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