Submarine Boat Archimedes Principle Demonstration Physics Experiment DIY Science Educational ToysFeatures:1. Happy and easy to learn2. Exercise your children practical ability3. Train your children observation capability,thinking and analytical skillsLearning Points:Archimedes Principle Why submarine can dive in the water, floating, or even hover This is mainly related to gravity and buoyancy, according to float of the Law (or Archimedes principle), any object in the liquid are subjected to the action of buoyancy, buoyancy equal to the size of the object itself displaces weight of the liquid when the weight of the object is larger than the buoyancy it will sink;. will go up less than buoyancy; equal will hover in the liquid buoyancy, these two forces are equal in magnitude, but the direction is opposite. Package Included:1 x Submarine Physics Experiment KitMore Details: Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store