Why do we feel cold? Video

This "Its OK to be Smart" video discusses why our bodies feel cold.  Students will learn that it is all about heat transfer.  The video will discuss convection, radiation, conduction, temperature, thermometers, matter, atoms, The Second Law of Thermodynamics, and why we would freeze in space.

States of Matter Video: What does it really mean to be a solid, liquid or gas?

In this science video, Veritasium does a fantastic job interviewing the public to see if they know what it actually means to be a solid, liquid or a gas.  It is fun to watch people try to remember from their schooling what the scientific answer is.  This would be a great video to show when introducing 3 of the 4 states of matter to your chemistry or physical science students.

Physical Science: Laser light makes sound wave patterns visible

I built my own laser light sound visualizer. Using a tone generator and multiple tones you can create some awesome light patterns. We showed this to all of our physical science classes. The excitement of our classes was pretty cool. Many students stopped to take pictures of the oscillator and talked about building their own. The cost of the contraption was hardly anything, just the laser light.