What science does these three scenes represent: 1. scientists put on heat-resistant suits then they jump into the mouth of an erupting volcano to explore earths interior. 2. Scientists work to stop a volcano from erupting. They succeed by filling its mouth with a large amount of heavy rocks. 3. The hero is walking along a ledge in a dimly lit cave. After a bad step, the hero falls into a dark pool that seems to have no bottom.