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What landforms do lava and ash create? Volcanic Landforms Chapter 4 section 3 pg. 159 A. Landforms from Lava and Ash GA Standard: S6E5: Students will investigate the scientific view of how earth’s surface was formed f. describe the effects of volcanic eruption on earth’s geological features 1. Shield Volcanoes- a wide gently sloping mountain, where lava gently flows out and hardens Vocab: sheild volcano Cinder cone Composite volcano Caldera 4. Lava Plateaus- High level areas formed by lava 2. Cinder Cone Volcanoes- A volcano with high viscosity lava that builds up in a cone-shaped mountain 3. Composite Volcanoes- A volcano built with alternating layers of ash and lava 5. Caldera- A huge hole left by the collapse of a volcanic mountain 6. Soils from ash and lavaVolcanic soil is very fertile Volcanic activity on and beneath earth’s surface create landforms. EQ:How does lava that hardens beneath the surface create landforms? B. Landforms From Magma 1. Volcanic necks- magma hardened in a volcanic pipe ● Dike- Magma that forces itself across rock layers and hardens ● Sill- When magma squeezes between horizontal layers of rock Volcanic neck Dike Geyser Sill Batholith 3.Batholiths-A mass of rock that forms when a large body of magma cools inside the crust 4. Dome Mountains-formed when uplift pushed hardened magma toward the surface C. Geothermal Activity- : “earth” “heat” magma heats underground water 1. Hot springs- Hot ground water rises to the surface and creates a pool of water EQ: What other distinctive features occur in volcanic areas? 2. Geysers- A fountain of water and steam that erupts from the ground 3. Geothermal Energy- Water heated by magma being used as energy: Iceland, New Zealand, California Geothermal activity Hot Springs and Geysers are types of geothermal activity