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Geology: Essential Question #2: What impact does the
movement of tectonic plates have on the development of the
Earth’s crust?
Earthquake- A sudden release of pressure caused by plate movements.
Seismology- The study of earthquakes.
Seismograph- An instrument that determines the location and strength
of an earthquake.
Seismic waves- A wave of energy that travels through the Earth, away
from an earthquake.
P wave- A seismic wave that causes particles of rock to move in a backand-forth direction.
S wave- A seismic wave that causes particles of rock to move in a sideto-side direction.
Epicenter – The point on Earth’s surface directly above an earthquake’s
starting point.