The craters in a string near the center of the photo are like thos

Science
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The craters in a string near the center of the photo are like those of Q16 above (= Q17 from the lab textbook). Thus, they are __________ (impact/tectonic/volcanic) in origin.

Mar 21st, 2015

Obviously without the image or knowledge of what Q16/Q17 are makes this tricky... but as a general rule, strings of craters are usually impact-related. They form when a loose body or collection of smaller objects (comets are commnly very loose) breaks up or spreads out as it approaches the surface, causing a trail of smaller impact craters, one for each piece, lying along the trajectory of the body.

See also comet Shoemaker-Levy 9: http://en.wikipedia.org/wiki/Comet_Shoemaker%E2%80%93Levy_9

Mar 21st, 2015

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