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Forces in the Crust
Earthquakes and Seismic Waves
Monitoring Earthquakes
Safety
100
The force that acts on an area of rock takes up.
What is stress?
100
The point on the surface that sits above the focus
What is the epicenter?
100
The pattern of lines that represents an earthquake
What is a seismogram?
100
The state that has the most quakes.
What is California?
200
The three forces of stress.
What is tension,compression,and shearing?
200
The seismic wave that arrives first
What is a primary wave?
200
The 4 tools used for monitoring quakes
What is a creepmeter, a tiltmeter, gps satellites, and lasers?
200
The process that turns soil into mud
What is liquefaction?
300
The stress force that forms normal faults.
What is tension?
300
The wave that cant go through liquids.
What is secondary waves?
300
The force that opposes the motion of one surface as it moves across another surface.
What is friction?
300
A quake after a quake
What is an aftershock?
400
The two blocks of rock that are in a fault.
What is the hanging wall and the footwall?
400
The three tools for quake measurement
What is the Mercalli scale, the Richter scale, and the moment magnitude scale?
400
The tool that has a pen, drum, and paper
What is a seismograph?
400
A large wave formed by an earthquake
What is a tsunami?
500
The landforms that result from folding, stretching, and uplifting.
What is anticlines, synclines, folded mountains, fault-block mountains, and plateaus?
500
The number of stations needed to determine the epicenter's location
What is 3 stations?
500
The instrument that monitors horizontal fault movements
What is a laser-ranging device?
500
The safest way to protect yourself in a quake
What is drop, cover, hold?