Volcanoes

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 surface.

Front

What is magma?

Back

Magma is molten rock that is found 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 a stratovolcano and a shield volcano?

Back

Stratovolcanoes have steep slopes and are known for explosive eruptions, while shield volcanoes have gentle slopes and produce less explosive eruptions.

Front

What is the role of silica in magma?

Back

The amount of silica in magma affects its viscosity and explosiveness; higher silica content leads to more explosive eruptions.

Front

What is a pyroclastic flow?

Back

A pyroclastic flow is a fast-moving current of hot gas and volcanic matter that can be extremely dangerous.

Front

What is volcanic ash?

Back

Volcanic ash consists of tiny fragments of rock and glass that are ejected during an explosive volcanic eruption.

Front

What is the Ring of Fire?

Back

The Ring of Fire is a major area in the Pacific Ocean where many earthquakes and volcanic eruptions occur due to tectonic plate movements.

Front

What is the impact of frequent eruptions on volcanic danger?

Back

Frequent eruptions can reduce the buildup of pressure, potentially lowering the danger level compared to infrequent eruptions.

Front

What is magma viscosity?

Back

Magma viscosity refers to the thickness or resistance to flow of magma, which influences how easily it erupts.