Geography. 0.0 / 5 ? GeographyVolcanos and earthquakes.All LevelsNone Created by: niamhdavies123Created on: 20-11-13 11:03 What is an active volcano? A volcano that has erupted recently and is likely to do so again. 1 of 19 What is the crust? The outer layer of the Earth. 2 of 19 What is a dormant volcano? A volcano that has erupted within the last 2000 years but not recently. 3 of 19 What are earthquakes? A movement or tremor in the Earth's crust. 4 of 19 What is an extinct volcano? A volcano that has not erupted in the last 2000 years and is unlikely to do so again. 5 of 19 What is lava? Molten rock flowing from under the Earth's crust. 6 of 19 What is magma? Molten rock below the Earth's surface. 7 of 19 What is magma chamber? Where molten rock is found deep below the Earth's surface. 8 of 19 What is mantle? The layor of the earth between the crust and the core. 9 of 19 What is a natural hazard? A great force of nature, such as an earthquake, flood, or volcano that is a danger to people. 10 of 19 What is a plate boundary? Where two plates meet. 11 of 19 Whats a plate? Large section of the Earth's crust. 12 of 19 What is the ring of fire? A circle of volcanoes around the edge of the Pacific Ocean. 13 of 19 What is a richter scale? A scale used to meausure the strengh of earthquakes. 14 of 19 What is seismograph? The instrument used to measure the strengh of an earthquake. 15 of 19 What is the vent? An opnening in Earth's surface through which material is forced during a volcanic eruption. 16 of 19 What are volcanic bombs? Large rock fragments thrown out by erupting volcano. 17 of 19 What is a volcano? A cone shaped mountain made from lava and or ash. 18 of 19 What are zones of activity? Areas where earthquakes and volcanos are common. 19 of 19
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