Volcano and Earthquakes

Front

What is a volcano?

Back

A volcano is an opening in the Earth's surface where molten rock, ash, and gases can escape from below the Earth's crust.

Front

What causes an earthquake?

Back

An earthquake is caused by the sudden release of energy in the Earth's crust, resulting in seismic waves.

Front

What is the Richter Scale?

Back

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

Front

What is a seismometer?

Back

A seismometer is an instrument that detects and records the vibrations caused by earthquakes.

Front

How many active volcanoes are there in the world?

Back

There are approximately 1,500 active volcanoes in the world.

Front

What is magma?

Back

Magma is molten rock located beneath the Earth's surface.

Front

What is lava?

Back

Lava is magma that has reached the Earth's surface.

Front

What is the difference between an active, dormant, and extinct volcano?

Back

An active volcano is currently erupting or has erupted recently, a dormant volcano has not erupted in a long time but may erupt again, and an extinct volcano is not expected to erupt again.

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 is the focus of an earthquake?

Back

The focus of an earthquake is the point within the Earth where the earthquake originates.