This document summarizes the five main types of volcanoes: 1) Stratovolcanoes have steep slopes and are the most powerful due to their high viscosity magma and gas content. Examples include Vesuvius and Mt. St. Helens. 2) Cinder cones have medium viscosity magma and gas and form bowl-shaped craters. Examples are Stromboli and Paricutin. 3) Shield volcanoes have low viscosity magma and gas and form wide, low mountains like those in Hawaii. 4) Domes form within the craters of stratovolcanoes from high viscosity, low gas magma. An example is Mt. St. Helens' dome. 5) Cal

1. By
Sarah Wright

2. A volcano is:
a mountain made by magma and lava forced up
through the Earth’s crust.

3. Five types of volcanoes
The types of volcanoes depend on two main factors:
Viscosity
+
Gas
The higher the viscosity and the higher the gas content the more powerful the
volcano.
The five type of volcanoes are:
1. Stratovolcano
2. Cinder Cone
3. Shield
4. Dome
5. Caldera

4. Stratovolcano
High viscosity (think magma)
High gas content
Steep hills; high mountains
The most powerful volcanoes!!!
Examples:
Vesuvius
Naples, Italy
Vesuzius in Italy
Mt. Saint Helen’s in US
Mt. Saint Helens
Montana, USA

5. Cinder Cone
Medium viscosity
High gas content
Most have a bowl shaped crater at the top
Example: Paricutin
Stromboli in Italy Mexico
Paricutin in Mexico
Stromboli, Italy

6. Shield
Low viscosity
Low gas content
Usually low and can be hundreds of
miles wide
Example:
Maunu Lau in Hawaii

7. Dome
High viscosity
Low gas content
Often found in the crater of Stratovolcanoes
Example:
Dome on Mt. Saint Helens

8. Caldera
Formed by the collapse of land after
a volcano erupts
Shaped like a cooking pot or caldron
Example:
La Cumbre in the Galapagos Islands

9. I like volcanoes because they explode fiery red
lava!!!!!
http://www.youtube.com/watch?v=4aYQixhd
WY4