18Types of volcanoesVolcanologists have classified volcanoes into groups based on the shape of the volcano, the materials they are built of, and the way the volcano erupts.volcanic material: lava, rock fragment, and gas
19Volcano Groups Composite Volcanoes Shield Volcanoes (also called shields)Cinder ConesSpatter ConesComplex Volcanoes (also called compound)
20Ready to get your trophy? Volcanoes are a mountain which accumulated byFolding and crumpling.Uplift and Erosion. Accumulation of their own eruptive products
26 Positive Products from Volcanoes Geothermal Energy Volcanic ash
27Ash blows over land and increases soil fertility for forests and agriculture by adding nutrients and acting as a mulch.Groundwater heated by large, still hot magma bodies can be tapped for geothermal energy.
28Trophy time! Positive Products from Volcanoes are Geothermal Energy Power pointAn earthquake
34Facts about Earthquakes Earthquakes can occur at any time of the year and at any time of the day or night.Earthquakes occur under all weather conditions, sunny, wet, hot, or cold--without special tendency.
35Trophy time! What is an earthquake? A land form where molten rock erupts through the surface of the planet.Shaking of the ground caused by the sudden release of energy stored in the rocks below the surface.A vast tropical storm that has winds whipping around.
37Sorry, a land form where molten rock erupts through the surface of the planet is a volcano..
38Sorry, a vast tropical storm that has winds whipping around is a hurricane.
39Myths about Earthquakes The ground does not open up and swallow people (a commonly feared myth). Open ground cracks may form during an earthquake--related, for example, to land sliding or ground slumping. But such fissures are open gaps (they don't "swallow") that a person could stand in.
40Trophy TimeWhat scale is used to measure an earthquake? Pedometer Richter scale Mechanical scale
43Wrap UpGood job!Review: earthquakes and volcanoes are natural disasters.A volcano is a land form where molten rock erupts through the surface of the planet. Gases and rock shoot up through and spill over with lava fragments.Earthquakes and volcanoes occur in the Ring of Fire.Back