Volcano Basics
What is a volcano?
An opening in Earth's crust where magma, gas, and ash are released.
What is magma?
Melted rock beneath Earth's surface.
What is the crater of a volcano?
The opening at the top where eruptions occur.
Which moon is the most volcanically active in the solar system?
Io.
What is a constructive force?
A force that builds up Earth's surface.
What materials are released during a volcanic eruption?
Lava, ash, and gases.
What is lava?
Melted rock on Earth's surface.
What is the main vent?
The passage through which magma travels to the surface.
Which planet's surface has been shaped by volcanic actvity?
Venus.
Why are volcanoes considered a constructive force?
Because lava cools and forms new rock.
What type of landform is a volocano?
A mountain / hill.
When does magma become lava?
When it reaches Earth's surface.
What is magma stored in at the bottom of a volcano?
The magma chamber.
What causes volcanic activity on Io?
Tidal heating from Jupiter's gravity.
How do volcanoes change Earth's surface over time?
By creating new land through cooled lava.