Sink or Float Quiz

Why does a leaf float on water?

• Because it is light and has air trapped inside

• Because it is filled with water

• Because it is made of metal

• Because it is heavy and dense

What causes a steel spoon to sink in water?

• It is hollow inside

• It is made of wood

• It is heavy and made of metal

• It is light and filled with air

Why does an empty plastic bottle float?

• It is made of metal

• It is denser than water

• It is light and has air inside

• It is heavy and filled with water

What happens to a grape when salt is added to the water?

• It sinks because the water becomes lighter

• It floats because the water becomes denser

• It remains unchanged

• It dissolves in the water

Why does an orange float in water?

• It is filled with water

• It is made of metal

• It is heavier than water

• Its peel has air inside, acting like a life jacket