Fill in the blank: A leaf floats on water because it is ___.

Light

True or False: All heavy objects sink in water.

False. Some heavy objects can float if they trap air and are shaped appropriately.

What happens when a bottle full of water is placed in water?

It sinks because it is heavy and does not trap air.

Fill in the blank: The act of an object turning around in a circle is known as ___.

Spinning

A flat piece of aluminium foil floats because it traps _______.

Air

True or False: A tightly packed ball of foil will float on water.

False. A tightly packed ball of foil sinks because it is heavy and traps less air.

Fill in the blank: Boats have better floating capability when they are ___ and have a shape that effectively traps air.

Balanced

Erasers do not spin correctly because they are ___ in weight distribution.

Unbalanced

Fill in the blank: A ___ is a traditional Indian spinning wheel used to spin thread from cotton.

Charkha