Tossup

A substance’s ability to undergo this process is roughly proportional to “Z-squared over A.” The reproduction factor and resonance escape probability appear in Fermi’s four-factor formula (10[1])describing this process. (-5[1])This process is analogized to a water droplet splitting down the middle in the liquid (10[1])drop model. (10[1])Lise Meitner (“LEE-zuh MIGHT-ner”), who co-discovered this process, was snubbed from the Nobel Prize awarded to Otto Hahn. (10[1]-5[1])Graphite control rods moderate this process (10[1])by emitting neutrons. A chain reaction of this process occurs at the critical mass (10[1])for uranium-235. For 10 points, name this process in which a heavy nucleus splits into smaller ones, contrasted with fusion. ■END■ (10[1])

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