• Chemistry → Chemical Properties → Reactivity
  • Science → Physics → Using Sound to Measure Distance
  • Physics → Motion → Free Fall Motion

Professor Anderson leads the group through the underground cave. He almost falls down a deep chasm as he tries to assure the group that he's good with directions. He attempts to use a flare to measure the depth of the chasm, but the magnesium rocks cause it to explode. Hannah then gives him a glowstick, and he uses that to determine that the chasm is about 200 feet deep.

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