Bellringer

1
Bellringer

• Describe how the Andes Mountains in South America
  were formed. Use the words
• Continental crust
• Oceanic crust
• Convergent boundary
• If you need help, look in your notes!!

2
Volcanoes

• Vulcan- Roman God of Fire

3
What is a volcano?

• Volcano- Areas of earths surface through which
  magma and volcanic gases pass
• Volcano comes from the Roman word Vulcan, which
  means fire

4
Whats inside a volcano?

• Magma Chamber- molten rock that feeds a volcano
• Vents- cracks in the crust
• What is the difference between magma and lava?

5
Types of Volcanoes

• Shield Volcano
• Built from layers of lava
• Non-explosive eruptions
• Not very steep, but can be big

6
Types of Volcanoes

• Cinder Cone Volcano
• Built from pyroclastic material
• Moderately explosive, short eruptions
• Small in size, steep slopes

7
Types of Volcanoes

• Composite Volcanoes
• Most common type
• Explosive eruptions and lava flow
• Built from pyroclastic material AND lava