Earthquakes and Volcanoes

Front

What is a tsunami?

Back

A tsunami is a series of ocean waves caused by underwater earthquakes or volcanic eruptions.

Front

What type of wave travels the fastest during an earthquake?

Back

Primary Wave (P Wave) travels the fastest.

Front

What can a huge undersea earthquake off the coast produce?

Back

A tsunami.

Front

What is an S wave shadow zone?

Back

An area on the Earth's surface where S waves cannot be detected due to their inability to travel through liquid.

Front

What is an explosive eruption?

Back

An explosive eruption occurs when trapped gases build up pressure until they explode with incredible force.

Front

What are primary waves?

Back

Primary waves (P waves) are seismic waves that compress and expand the ground and are the first to be detected by seismographs.

Front

What are secondary waves?

Back

Secondary waves (S waves) are seismic waves that move the ground up and down or side to side and arrive after P waves.

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 erupted onto the surface.

Front

What is a volcanic eruption?

Back

A volcanic eruption is the release of gas, ash, and molten rock from a volcano.

Front

What causes earthquakes?

Back

Earthquakes are caused by the sudden release of energy in the Earth's crust, often due to tectonic plate movements.