Why Ice Floats

Create an engaging science lesson for Instagram Reels, TikTok, and YouTube Shorts explaining why ice floats without using laboratory research imagery. Start with a macro close-up of an ice cube dropping into a clear glass, captured on a 100mm lens at 120 frames per second. Cut to a playful presenter in a bright classroom, using translucent blue blocks to model water molecules. Use a gentle orbiting camera, crisp white key light, cool cyan rim lighting, and polished 3D overlays showing expanded spacing in solid water. Include one simple analogy involving a crowded subway car, large captions, and a final prediction challenge before revealing the answer.