THIS IS With Your Host... Landforms Essay Topics Capture the Chapter 100 100 100 100 200 200 200 200 200 300 300 300 300 300 300 400 400 400 400 400 400 500 500 500 500 500 500 Volcanoes and Plates Magma Eruptions 100 100 200 The _______________ is a belt of volcanoes around the rim of the Pacific Ocean. A 100 What is the Ring of Fire? A 100 An area where magma melts through the crust in the middle of a plate is called a(n) _____________. A 200 What is a hot spot? A 200 These form along the boundaries of Earth’s plates. A 300 What are volcanic belts? A 300 This volcanic formation occurs where two plates converge and subduction causes crust to be melted in the mantle. A 400 What is an island arc? A 400 This is a weak spot in the crust where molten material reaches Earth’s surface. A 500 What is a volcano? A 500 The molten mixture of rockforming substances, gases, and water deep in Earth’s mantle is called __________. B 100 What is magma? B 100 The more __________ that magma contains, the thicker the magma is. B 200 What is silica? B 200 A substance that cannot be broken down into other substances is a(n) ________. B 300 What is an element? B 300 A substance’s ability to burn is an example of a(n) __________________. B 400 What is a chemical property? B 400 Pahoehoe and aa are produced during __________ eruptions. B 500 What are quiet? B 500 A(n) ________________ happens when an explosive eruption hurls ash, cinders, bombs, and gases out of a volcano. C 100 What is a pyroclastic flow? C 100 Liquid magma flows upward through the crust because it is _________ dense than the solid material around it. C 200 What is less? C 200 Inside a volcano, magma collects in a pocket called a __________________. C 300 What is a magma chamber? C 300 DAILY Place A Wager DOUBLE C 400 This is a physical property of magma from a quiet eruption. C 400 What is flows easily, low silica content, low viscosity? (any one of the above will do) C 400 A volcano that is erupting or has shown signs that it may erupt in the future is called _________________. C 500 What is active? C 500 A(n) ___________ is a wide, gently sloping mountain made of hardened layers of low-silica lava. D 100 What is a shield volcano? D 100 A(n) _______________ forms when magma hardens in a volcano’s pipe and is later exposed. D 200 What is a volcanic neck? D 200 Magma that forces itself across rock layers hardens to form this. D 300 What is a dike? D 300 A(n) _______________ is hot water and steam that erupts from the ground. D 400 What is a geyser? D 400 When the top of a volcanic mountain collapses, a ____________ forms. D 500 What is a caldera? D 500 This is the energy derived from water that has been heated by magma underground. E 100 What is geothermal energy? E 100 This is why explosive eruptions cause ash, cinders and bombs to be produced. E 200 What is the lava that is ejected has a high viscosity and silica content which forces it to be broken down as it cools to form these particles? (Accept reasonable answers) E 200 This is how geothermal energy is used. E 300 What is for heating homes as hot water and for creating electricity by using steam to power turbines? (Accept reasonable answers) E 300 This is the main difference between a composite volcano and the type of volcano that forms the Hawaiian Islands. E 400 What is the Hawaiian Islands are shield volcanoes made up of thin layers of lava in a gently sloping mountain? (Accept reasonable answers) E 400 An earthquake changed the geysers at Yellowstone National Park. Some geysers now erupt at different times than they did before. This is the reason why these changes may have occurred. E 500 What is the changes may have closed some channels in the rock and opened others or may have widened or narrowed some channels? (Accept reasonable answers) E 500 A(n) _________________ is a mass of rock that formed when a large body of magma cooled inside Earth’s crust. F 100 What is a batholith? F 100 Volcanic soils are fertile because they contain ____________. F 200 What is phosphorus and potassium? F 200 Layers of thin, runny lava that flow over a wide area before they cool and harden can build up a ___________. F 300 What is a lava plateau? F 300 This is the type of volcano that forms when you have a layer of ash, cinders, and bombs followed by a layer of lava then more ash, cinders and bombs. F 400 What is a composite volcano? F 400 These are two factors that affect the force of a volcanic eruption. F 500 What are viscosity and silica content? F 500 The Final Jeopardy Category is: Geographic Places Please record your wager. Click on screen to begin This is one of the three locations in the U.S. where batholiths are found. Click on screen to continue What are the Idaho batholith, the Sierra Nevada batholith, or the Baja batholith? (any one of the answers is ok) Click on screen to continue Thank You for Playing Jeopardy! Game Designed By C. Harr-MAIT