Chapter 8 – Study Guide
Vocabulary Terms:
 Seismology
 Deformation
 Elastic rebound
 Seismic waves
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P-waves
S-waves
Seismograph
Seismogram
Things To Know:
8.1
1. Explain where earthquakes take place.
2. Explain what causes earthquakes.
3. Identify three different types of faults that occur at plate boundaries.
4. Describe how energy from earthquakes travels through the Earth.
8.2
1. Explain how earthquakes are detected.
2. Describe how to locate an earthquake’s epicenter.
3. Explain how the strength of an earthquake is measured.
4. Explain how the intensity of an earthquake is measured.
8.3
1. Explain how earthquake-hazard level is determined.
2. Compare methods of earthquake forecasting.
3. Describe five ways to safeguard buildings against earthquakes.
4. Outline earthquake safety procedures.
Diagrams to Know:
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Epicenter
Focus
8th Grade
Science
Chapter 8 – Study Guide
8th Grade
Science
Table 1 Worldwide Earthquake Frequency (Based on Observations
Since 1900)
Descriptor
Magnitude
Average number annually
Great
8.0 and higher
Major
7.0–7.9
18
Strong
6.0–6.9
120
Moderate
5.0–5.9
800
Light
4.0–4.9
about 6,200
Minor
3.0–3.9
about 49,000
Very minor
2.0–2.9
about 365,000
1
POSE SOME QUESTIONS FOR YOURSELF REGARDING ALL THESE
DIAGRAMS…WHAT DO YOU THINK I MIGHT ASK YOU TO
KNOW/FIGURE OUT/PREDICT…