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Scientific words

science vocab

Stress a force that acts on rock to change its shape or volume
Tension a stress force that pulls on the crust
Compression a stress force that squeezes rock until it folds or breaks
Shearing stress that pushes rock in two opposite directions
Normal Fault the fault is at an angle, the hanging wall is pushed up the footwall
Hanging Wall the block of rock that lies above the angle of the fault
Footwall the block of rock that lies below the angle of the fault
Reverse Fault the fault is at an angle, the hanging wall is pushed up the footwall
Strike-Slip Fault the rocks on either side of the fault slip past each other sideways
Anticline a fold in rock that bends upward into an arch
Syncline a fold in rock that bends downward to form a valley
Plateau a large area of flat land elevated high above sea level
Earthquake the shaking and trembling that results from the movement of rock beneath earth's surface
Focus the area beneath Earth's surface where rock under stress breaks, triggering an earthquake
Epicenter the point on the surface directly above the focus
P wave primary waves, seismic wave that compress and expand the ground
S wave secondary waves, seismic wave that vibrate from side to side as well as up and down
Surface wave seismic wave that forms when P and S waves reach the surface
Richter Scale a rating of an earthquake's magnitude based on the size of the earthquake's seismic waves
Seismograph an instrument that records and measures seismic waves
Created by: sammymudd