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Plotted theoretical crater diameter sizes vs. meteorite diameters. Then, they worked backwards and determine the probable size of the 65 mya meteorite, the Barranger meteorite, and a few others by using Google earth to measure crater diameters. For providing some basic information from a meteorite...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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2
By TED-Ed
Published in 2013
What's six miles wide and can end civilization in an instant? An asteroid -- and there are lots of them out there. With humor and great visuals, Phil Plait enthralls the TEDxBoulder audience with all the ways asteroids can kill, and what we must do to avoid them.
Grade Level   6 7 8 9 10 11 12
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