Watch this short video a few times to learn about the tiny world that makes up pretty much everything.
When you are done watching the video one time all of the way through, get out a piece of paper and rewatch while you record some information. Pause as needed.
1. Record the measurement for
*the human hair in nanometers (it is on the little piece of paper)
*the red blood cell
* when you are smaller than he wave of visible light