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All about volcanoes


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All about volcanoes

  1. 1. Ms. Cormican3rd Grade Science
  2. 2. Definitions ash cloud - an ash cloud is the cloud of ash that forms in the air after some volcanic eruptions. conduit - a conduit is a passage through which magma (molten rock) flows in a volcano. crust - the crust is Earths outermost, rocky layer. lava - lava is molten rock; it usually comes out of erupting volcanoes. magma chamber - a magma chamber contains magma (molten rock) deep within the Earths crust.side vent - a side vent is a vent in the side of a volcano. vent - a vent is an opening in the Earths surface through which volcanic materials erupt.
  3. 3. What is a volcano?  A volcano is a vent or chimney that connects molten rock (magma) from within the Earth’s crust to the Earths surface.  The volcano includes the surrounding cone of erupted material.
  4. 4. 3 Types of Volcanoes Shield Volcanoes Cinder Cone Volcanoes Composite Volcanoes These volcanoes get their name b y the way they are shaped and what they are made of.
  5. 5. Shield Volcanoes  Are built almost entirely of fluid lava flows.  Flow after flow pours out all directions in this volcano.  The Hawaiian Island are composed of chains of these volcanoes.
  6. 6. Take a look at this ShieldVolcano!
  7. 7. Cinder Cone Volcanoes  Simplest types of volcano.  Have a bowl shaped crater at the top and rarely rise more than a thousand feet or so above their surroundings.  Many are found in western North America.
  8. 8. Take a look at this Cinder ConeVolcano!
  9. 9. Composite Cone Volcanoes  Develop from repeated explosive and non explosive eruptions.  These volcanoes are the largest !  St. Augustine in Alaska is an example of composite cone.
  10. 10. Look at this CompositeVolcano!
  11. 11. How Volcanoes Erupt!
  12. 12. Interesting Facts Indonesia has the most active volcanoes in the world. The word volcano comes from an ancient god named Vulcan. Mars has the largest volcano solar system. There are over 1900 active volcanoes on Earth Mauna kea is the tallest volcano in the world. Volcanoes are on land and in sea. Volcanic eruptions feature ash, rock, gases, and lava!
  13. 13. What to think about… Vocabulary words What are the 3 types of volcanoes? Describe how a volcano eruption happens Please click here to complete your next activity.