Geography 0.0 / 5 ? GeographyVolcanoes and earthquakesAll LevelsAll boards Created by: hollielouise229Created on: 20-11-13 11:02 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 200 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 a magma chamber? Where molten rock is found deep below the earth's surface 8 of 19 What is the mantle? The layer 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, volcano that is a danger to people. 10 of 19 What is a plate boundary? Where two plates meet. 11 of 19 What is a plate? Large section of the earth's crust. 12 of 19 What is a ring of fire? A circle of volcanoes around the edge of the Pacific Ocean. 13 of 19 What is the richter scale? The scale used to measure the strenght of earthquakes. 14 of 19 what is a seismorgraph? the instrument used to measure the strength of an earthquake. 15 of 19 what is a vent? an opening in the earths surface through which material forced during a volcanic eruption. 16 of 19 What is a volcanic bomb? Large rock fragments thrown out by an erupting volcano. 17 of 19 What is a volcano? A cone shaped mountain made from lava or ash. 18 of 19 What are zones of activity? Areas where earthquakes and volcanoes are common. 19 of 19
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