Volcanoes and Earthquakes Practice Flashcard

Front

What is an aftershock?

Back

An aftershock is a smaller earthquake that follows a larger earthquake.

Front

Why do many earthquakes and volcanoes occur along the West Coast of the United States?

Back

Many earthquakes and volcanoes occur along the West Coast of the United States because it is a plate boundary.

Front

What term describes a substance's resistance to flow, or how thick it is, in relation to volcanic activity?

Back

Viscosity.

Front

What is the purpose of a global network of seismic stations?

Back

A global network of seismic stations is used to monitor tremor activity.

Front

What type of plate boundary is characterized by tectonic plates moving apart?

Back

Divergent plate boundary.

Front

What is the primary cause of volcanic eruptions?

Back

The primary cause of volcanic eruptions is the movement of magma from beneath the Earth's crust.

Front

What is the difference between magma and lava?

Back

Magma is molten rock beneath the Earth's surface, while lava is magma that has reached the Earth's surface.

Front

What is a tectonic plate?

Back

A tectonic plate is a massive slab of solid rock that makes up the Earth's lithosphere and moves over the semi-fluid asthenosphere.

Front

What are the three main types of plate boundaries?

Back

The three main types of plate boundaries are convergent, divergent, and transform boundaries.

Front

What is the Richter scale used for?

Back

The Richter scale is used to measure the magnitude of earthquakes.