Unit Four - Types of Volcanoes

Question 1

What are the three types of Volcanoes?

Answer 1

1. Composite (stratovolcanoes)
2. Shield Volcanoes
3. Cinder Cone Volcanoes

Question 2

What are Composite (Strato) Volcanoes formed from?

Answer 2

Alternating layers of lava and rock fragments

Mt St. Helens, Mt Rainier, Vesuvius

Question 3

How do Composite (Strato) Volcanoes erupt? Why? (3)

Answer 3

1. Explosive Erupts
2. Viscous magma
3. Creates pressure

Mt St. Helens, Mt Rainier, Vesuvius

Question 4

Where are Composite Stratovolcanoes located?

Answer 4

Convergent boundary (oceanic and continental collision).

Mt St. Helens, Mt Rainier, Vesuvius

Question 5

How do Shield Volcanoes erupt?

Where erupt from, type of lava , size of mount, how and why it flows,

Answer 5

1. Large Mountain
2. Lava Oozes Out
3. Basaltic Lava is Runny
4. Flows from a Vent or Several Vents

Hawaii (Kilauea)

Question 6

Where are Shield Volcanoes located?

Answer 6

Hotspots or Divergent Boundaries (mid ocean ridge)

Hawaii (Kilauea)

Question 7

Where are Cinder Cone Volcanoes located?

Ex: Paricutin (in Mexico, grew 300 ft in 5 days)

Can grow very rapidly

Answer 7

Above vents of strato or shield volcanoes.

Ex: Paricutin (in Mexico, grew 300 ft in 5 days)

Can grow very rapidly

Question 8

What are Cinder Cone Volcanoes made of?

Answer 8

Lava Fragments called Cinders

Ex: Paricutin (in Mexico, grew 300 ft in 5 days)

Can grow very rapidly

Question 9

All about Hot Spots (2)

Answer 9

1. Fixed area of high temperatures within the mantle
2. Burns through the plate that is located above it