Earthquakes

Front

What is the Earth's thin, rocky outer layer called?

Back

Crust

Front

What are the main components of the Earth's core?

Back

Iron and nickel.

Front

Why is the Earth's inner core solid?

Back

Because of immense pressure.

Front

How do P waves compare to S waves in terms of speed?

Back

P waves travel faster than S waves.

Front

What factor is NOT used in calculating the moment magnitude of an earthquake?

Back

Magnitude of past earthquakes in the area.

Front

What is the definition of a seismogram?

Back

A record produced by a seismograph that shows the motion of the ground during an earthquake.

Front

What are tectonic plates?

Back

Large sections of the Earth's crust that move and interact with each other.

Front

What is the focus of an earthquake?

Back

The point within the Earth where an earthquake originates.

Front

What is the epicenter of an earthquake?

Back

The point on the Earth's surface directly above the focus.

Front

What are surface waves?

Back

Seismic waves that travel along the Earth's surface and cause the most damage during an earthquake.