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Chapter 7 Lesson 2

Across
An instrument that records seismic waves
A scale based on an earthquake's seismic wave size
A single number geologists assign an earthquake based on its size
A scale that measures the amount of shaking
The area beneath earth's where rock that was under stress begins to break
Seismic waves that are compressed
Down
A scale based on the amount of energy released from an earthquake
Move slower than P and S waves, but produce more severe ground movement
Shaking and trembling on the earth's surface
The point on earth's surface directly above the focus
Seismic waves that vibrate