Week+6

This was my wave lab. Everyone has swung a jump-rope. It makes on large sweeping arch. If you rotate the rope correctly you can make it stand in two stationary waves, or three even. In this lab we counted the number of revolutions that the rope made when one, two, and three waves were being generated. The more waves you make the greater the “frequency”. Creating more waves meant that you needed to rotate the rope faster; you need to use more energy in those higher frequency waves. I used this lab to give more meaning to E=hv. The samples below are the lab reports I collected from some of my students.

Sample 1 "*" Sample 2 Sample 3

This is just a simple flame test lab. I used BaCl, NaCl, SrCl, CuCl, KCl, and CaCl. The students enjoyed the lab, but I’m not sure that all of them really made the connection with electron relaxation.

Sample 1 Sample 2 "*" Sample 3