Level 43
Level 44

Earthquakes


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Occur along convergent boundaries
Reverse faults on which boundaries
Occur along divergent boundaries
Normal faults on which boundaries
Occur along transform boundaries
Strike slip faults on which boundaries
Magnitude
size of an earthquake
California
US state in which most earthquakes occur
Ring of fire
Boundaries along the Pacific plate where most earthquake activity occurs
San Andreas
Example of a strike slip fault
Great Basin
Mountain area in Utah and Nevada where the mountains are fault block
Himalayas
Example of folded mountains
Shearing
Stress that moves rock in two opposite directions horizontally
Tension
It is a stress that lengthens and pulls material such as rock apart. In places where tension is greater than the strength of the rock, the rock faults or breaks.
Compression
It is a stress that squeezes or shortens material such as rock. In places where rock is less rigid, compression creates folds. In places where the rock is more rigid, compression can create faults.
Strike slip
Fault where rocks slide past each other
Normal
Fault where the hanging wall sinks below the foot wall
Reverse
Fault where the hanging wall rises above the foot wall
clouds
air masses in the sky
plateau
a broad, flat area of land higher than the surrounding land
Seismic Waves
Vibrations travelling through the Earth carrying the energy released during an earthquake
Mercalli Scale
Measures the intensity (ground motion) of an earthquake, A scale that rates earthquakes according to their intensity and how much damage they cause
Richter Scale
a rating system used to measure the magnitude (strength) of earthquakes.
Moment-Magnitude Scale
a scale that rates earthquakes by estimating the total energy released by an earthquake
Clockwise
High pressure
Tsunami
a large wave produced as the shockwave from a submarine earthquake moves toward the shore
seismograph
what is the name of the trace produced by a seismometer?
Seismologist
a scientist who studies earthquakes
Level 45