The freighter TEKS Voyager is jammed at the Port of Houston. She's riding dangerously low, a deck crate keeps sliding, and the loading crane is bleeding power. You're the harbor engineer. Read the evidence, solve all four locks, and clear the ship to sail.
The dock supervisor radios you: “She won't stop settling, a crate slid across the deck, and the crane tripped out.” Every problem has a science reason hiding in the evidence — density, forces, and energy. Open each piece of evidence, weigh what it actually proves, and solve all four locks to send the Voyager safely to sea.
Tap each piece of evidence to read it. (You can reopen them anytime.)
Solve each lock using only the evidence above.
You used density to explain why a steel ship floats, proved the crate's forces were balanced, named Newton's Third Law, and traced the crane's energy without losing a joule. That's exactly how marine engineers keep real ships safe.