FC: Volcanoes By: Nathan AND John
1: What Are Volcanoes? pg 2-3 Lava Pumice pg 5-6 Active Volcanoes pg 10 Resources pg 13
2: Welcome. Today we're taking you exploring.What're we exploring you may ask? This is the wonderfully destructive world of volcanoes!
3: What are Volcanoes? | A volcano is really just an opening in the earth's surface were magma can escape.A volcano is a mountain that opens downward to a pool of magma. A volcano erupts when magma escapes from inside the earth. Just sixty miles underground, the temperature can get over 2,500 degrees. | Lightning flashes as a volcano roars!
4: Where does the volcano begin and the lightning end?
5: Red-hot magma within the earths crust can form hot springs. Lava flows slow down and thickens as it hardens. Lava is a liquid rock. The earth's crust is made up of giant rock plates. Magma is a liquid rock inside a volcano. | Lava + Pumice | A river of lava flows from a nearby volcano.
6: Ash is very small fragments of lava or rock blasted into the air from volcanoes. Igneous rocks are formed from lava. Alahar is a type of mud flow. Pumice is a light porous volcanic rock that forms during a explosion. | The floating volcanic rock, pumice.
7: The Ring of Fire has 452 volcanoes. The Ring of Fire is a band of volcanoes along the boundaries of tectonic plates. The largest volcano is Mauna Lou. There are more than 1500 active volcanoes. The color of lava depends on the temperature. U.S. volcanoes are most common in Hawaii, Alaska, California, Oregon, and Washington. | Diagram of the Ring of Fire.
8: Smoke mingles with a fresh thundercloud! | Lava quickly cools after being spouted out the side!
9: A large volcano shoots lava! | Diagram of a composite volcano.
10: Composite volcanoes are steep-sided volcanoes. They are composed of many layers of volcanic rocks. Such rocks are usually made from high-viscosity lava. Ash and rock debris also contribute. Mt. Rainier and Mt. St. Helens are famous examples. | Lava isn't the only thing that comes from volcanoes.
11: Lava domes form when lava cools near the vent. This allows explosive gas and steam to escape. Lava domes tend to be steep. Lots of people mistake them with composite volcanoes. | Lava forms a net, which will quickly become a lake, and form new land.
12: Magma is underground. It's just underground lava. Lava isn't lava until it's above ground. It grows hotter as it flows. | Lava engulfs the land around it.
13: RESOURCES Weather Wiz Kids.com Vincent Bunce Volcanoes Merrilee Hooker Volcanoes Stephen Person Devastated By a Volcano | Front Cover Picture: Snowflake Obsidian