Volcanoes

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Download our mobile app to listen on the go

Get App

Questions and Answers

What is magma?

Magma is hot molten rock from deep within the Earth.

How does a volcano form?

A volcano forms when magma rises toward the Earth's surface and collects in magma chambers, and then is expelled through a vent or fissure in the Earth's surface as a volcanic eruption.

What is the difference between magma and lava?

Magma is liquid rock in the middle of the Earth, while lava is liquid rock that is leaving the Earth.

What is an active volcano?

An active volcano is a volcano that has erupted at least once in the past 10,000 years. Signup and view all the answers

What is plate tectonics?

Plate tectonics is a theory that states the Earth's crust is broken up into plates, and these plate-like sections of crust are called tectonic plates. Signup and view all the answers

How do active volcanoes occur?

Many active volcanoes occur due to plate tectonics, where magma can escape in a volcanic eruption at the boundaries between tectonic plates. Signup and view all the answers

What is the Ring of Fire?

The Ring of Fire is an area of the Pacific Ocean Basin that is tectonically active. Signup and view all the answers

What happens when pressure builds within magma chambers?

When pressure builds within magma chambers, magma is expelled through a vent or fissure in the Earth's surface as a volcanic eruption. Signup and view all the answers

What is the name for hot molten rock outside of a volcano?

Hot molten rock outside of a volcano is called lava. Signup and view all the answers

What are the two main components of a volcano?

The two main components of a volcano are magma chambers, where magma collects, and vents or fissures, through which volcanic eruptions occur. Signup and view all the answers

Flashcards are hidden until you start studying