Earthquakes and Volcanoes

Front

At what type(s) of plate boundaries do most volcanoes form?

Back

Most volcanoes form at convergent and divergent plate boundaries.

Front

Why does magma rise?

Back

Magma rises because it is less dense than the crust.

Front

What is a tracing of an earthquake's motion that is created by a seismometer?

Back

A tracing of an earthquake's motion created by a seismometer is called a seismogram.

Front

The point on earth's surface, directly above the focus (or hypocenter) is called the _____________.

Back

The point directly above the focus is called the epicenter.

Front

Which is the fastest type of seismic wave?

Back

The fastest type of seismic wave is the p-wave.

Front

What is the definition of a volcano?

Back

A volcano is an opening in the Earth's crust through which molten lava, ash, and gases are ejected.

Front

What are tectonic plates?

Back

Tectonic plates are large sections of the Earth's lithosphere that move and interact with each other.

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 surface.

Front

What is a fault?

Back

A fault is a fracture in the Earth's crust along which movement has occurred.

Front

What are seismic waves?

Back

Seismic waves are waves of energy that travel through the Earth, typically caused by earthquakes.