Physical Science 20 - Jan 5

Today we started looking at waves by learning what causes as wave.  We started looking at vibrations and periodic motion.  This involved learning some new terms such as period and frequency.  Students learned how to calculate period and frequency and we went through a couple of examples.  We concluded the class by working on Homework 5.1 which I will go over tomorrow.  This was all covered on slides 110-122.  Tomorrow we start to look at waves and what they are.