1. VOLCANOES
CH. 3.1
Volcano (3:08)
Volcano Eruption (1:40)

2. Intro: What is a Volcano?
1. A molten mixture of rock-forming substances, gases and water from the mantle is _magma__.
2. When magma reaches the surface it is called _lava__.

4. I. Volcanoes and Plate Boundaries
A. What is the Ring of Fire?
 a major volcanic belt that rims the Pacific Ocean 
B. Volcanic belts form along the boundaries of Earth’s _plates_.
C. Most volcanoes form along _diverging_ plate boundaries such as _mid__ - _ocean_ ridge.

6. Volcanoes
D. Volcanoes also form along _diverging_ plate boundaries where _subduction_ takes place.
E. Diverging Boundaries
1. Ridges are long _underwater_ mountain ranges that sometimes have a _rift_ _valley_ at the center.
Brain Pop: Volcanoes

8. F. Converging Boundaries
1. Volcanoes form where two __oceanic_ plates _collide_ or where oceanic meets _continental__ plates.
2. The volcanoes form a string of islands called an __island_ _arc_.

10. II. Hot Spot Volcanoes
A. Some volcanoes form along __hot_ _spots__ in the Earth’s mantle.
Volcano erupting (1:24)

11. Hot Spot Volcanoes
B. What is a hot spot = an area where material from deep within the mantle rises and melts forming magma
C. Where can you find a hot spot?
1. Hawaiian Islands
2. Yellowstone National Park
Old Faithful, a geyser
hot springs
Volcano Song (3:45)
Magma Rising (3:07)

12. Yellowstone National Park
Hot Springs Volcanic caldera