How can you feel air if you can't see it?

Hold your hand close to your mouth and blow on it, soft and slow. Can you feel something brush your skin? Yet when you look, your hand looks empty. So how can you feel air if you can't see it?

Air is all around you right now. It is made of tiny bits, smaller than the smallest speck of dust. Those bits spread out and fill your whole room, from the floor to the ceiling.

When air stays still, your skin feels nothing new. Your skin stops noticing air that never changes. So you forget the air is there at all.

But air can move, too. Air that moves past you is called a breeze, which means air that is moving along. When you blew on your hand, you made a little breeze of your own.

In a breeze, all those tiny air bits rush along together. They hurry from your mouth right toward your hand. What do you think they do when they reach your skin?

They push on it! Lots of air bits push against your skin all at once. One bit is too small to feel, but all of them together make a push you can feel.

Your skin is very good at feeling a push. It sends a quick message to your brain, and your brain tells you something is touching you. That is how you feel a breeze, even though your eyes see nothing.

Breeze. A breeze is moving air, and it pushes on your skin, so you feel it.

Next time a breeze tickles your cheek, you can smile and know the air is saying hello.