Why does an apple float in a tub of water, but a ball of aluminum foil sinks to the bottom? And why when you take that same ball of aluminum and flattened it out and shape it into a boat it will float?
How can a whole crowd of people be in a boat and it floats when a small pebble dropped into the water will sink?
How can this be?
In ‘Things that float and Things that don’t’ you can have heaps of fun guessing which things float and which things don’t. You can learn all about the density of water and how if affects the things that float (or not) on it. There is even a difference between the water in the sea and the water in a lake.
So have fun experimenting on what can float and what won’t.