Ch.9 Science Vocab (Earthquakes & Volcanoes)

Front

Tending to move toward one point or approaching each other.

Back

convergent

Front

Vibrations in the ground from movement along breaks in Earth's lithosphere.

Back

earthquake

Front

Location above an earthquake's focus

Back

Epicenter

Front

Break in Earth's lithosphere where one rock block moves relative to another.

Back

fault

Front

Location where rocks first move along a fault and seismic waves originate.

Back

fault

Front

Earth's interior between crust and core

Back

mantle

Front

Where Earth's lithospheric plates move and interact

Back

plate boundary

Front

Fastest seismic wave; causes ground particles to move in push-pull motion.

Back

Primary wave

Front

Causes ground particles to move side to side and up and down at right angles to wave direction.

Back

secondary wave

Front

Travels as vibrations on/in Earth

Back

Seismic wave