The shaking and trembling that results from the movement of rock beneath Earth's surface.
What is an Earthquake
100
Tension forces in Earth's crust cause this kind of fault.
What is a normal fault?
100
Vibrations that travel through Earth carrying the energy released during an earthquake.
What are seismic waves?
100
Occurs when an an earthquake's violent shaking suddenly turns loose, soft soil into liquid mud.
What is liquefactions?
100
A wire stretched across a fault to measure horizontal movement of the ground.
What is a creep meter.
200
Forces that squeeze or pull the rock in the crust that changes its shape or volume.
What is stress
200
Shearing creates this kind of fault.
What is a strike-slip fault
200
The first waves to arrive.
What are primary waves, P-Waves?
200
An earthquake that occurs after a larger earthquake in the same area.
What is aftershock?
200
Uses a laser beam to detect even tiny fault movements.
What is a laser-ranging device.
300
Stress that pushes a mass of rock in two opposite directions
What is shearing
300
A break in Earth's crust where slabs of crust slip past each other.
What is a fault?
300
Records the ground movements caused by seismic waves as they move through Earth.
What is a seismograph?
300
When an earthquake jolts the ocean floor, plate movement causes the ocean floor to rise slightly and push water out of its way, if the earthquake is strong enough, the water displaced by the quake forms large waves.
What is a tsunami?
300
Measures tilting of the ground.
What are tiltmeters?
400
Stress that squeezes rock until it folds or breaks.
What is compression?
400
Compression forces cause this kind of fault.
What is a reverse fault?
400
A measurement of earthquake based on seismic waves and movement along faults.
What is magnitude?
400
A building designed to reduce the amount of energy that reaches the building during an earthquake.
What is a base-isolated building?
400
Bounces radio waves off the ground, echo back into space, and the device records them.
What is a satellite monitor?
500
Any change in the volume or shape of Earth's crust.
What is deformation
500
Two part answer*
The two parts of faults that lie above and below the fault line
What is a hanging wall and footwall.
500
The point on the surface directly above the focus of an earthquake.
What is an epicenter?
500
Drop, cover, and hold.
What is protecting yourself during an earthquake?
500
Active faults and past earthquake locations tell geologists...