Volcanoes Flashcards
1
Q
What is a volcano?
A
vent or fissure in the earth’s crust (or in the surface of some other planet) through which molten lava and gases erupt.
2
Q
Where does volcanic activity occur?
A
In 3 main areas of plates:
- Spreading ridges undersea and on continents (Divergent boundaries, new crust produced)
- Subduction zones (Convergent boundaries, old crust destroyed)
- Hot Spots within plates