Journey to the Center of the Earth: Glowstick Drop
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.