1) Low-lying, densely populated areas are at low risk of danger during a tsunami. a) true b) false 2) The strength of an earthquake is usually measured using the _________________ scale. a) parabola b) Richter c) seismic  d) Seismograph  3) An instrument normally used to measure an earthquake is called a ______________________.  a) parabola b) Richter c) seismic d) Seismograph 4) Each level of the Richter scale is how many times greater than the one below it? a) 2 times b) 5 times c) 10 times d) 100 times e) 1000 times 5) Nickname for heavily volcanic locations along the belt in the Pacific Ocean. a) Ring of Fire b) Circle of Fire c) Ring of Magma 6) The strongest point of an earthquake.  a) The Hulk b) The center c) The epicenter

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