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Java Games: Flashcards, matching, concentration, and word search. |
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Chapter 12, Sections 2&3
Measuring Earthquakes and Earthquake Hazards & Safety
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| A | B |
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| focus | the point beneath Earth's surface where rock breaks under stress and causes an earthquake |
| epicenter | the point on Earth's surface directly above an earthquake's focus |
| seismic waves | a vibration that travels through Earth carrying the energy released during an earthquake |
| P waves | a type of seismic wave that compresses and expands the ground |
| S waves | a type of seismic wave that moves the ground up and down or side to side |
| surface waves | type of seismic wave that forms when P waves and S waves reach Earth's surface |
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