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Video+Questions+-+Chelyabinsk+Meteor.doc

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Department
Geography
Course
Geography 2152F/G
Professor
Mark Moscicki
Semester
Fall

Description
GEOG 2152F: Geography of Hazards Video: Chelyabinsk Meteor 1. What did the nuclear weapons monitoring system reveal about the explosion of the meteor? • The monitoring system reveals that the frequency of the meteor was very low. The low frequency sound waves, infrasound, was able to travel around the world a few times during the day. • The lower the frequency means that the explosion is bigger and bigger • 20-30 times the explosion of Hiroshima • 2. How do small holes form in meteors? • Air resistance eats away at the meteor, creating dents and holes in the object • 3. Why were people surprised by the shockwave? • The shockwave was cause by an explosion of air, aka an air blast • The explosion pushes air out in all directions from the origin of the explosion • People were surprised because the airblast occurs after they see the meteorite disappear because light
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