Boyancy

The Buoyancy push’s the wood stick to the top of the water and the stone sink because of the upthrust and sink to the bottom of the water and that is why that is called upthrust and buoyancy. A wood twig float’s because of the Buoyancy and not just buoyancy because it is the weight and because it is light and heavy. A stone sink because of the upthrust and not just of the upthrust because it the weight and how heavy but not light.