Science 90 - Dec 12

Today we learned how electricity goes from the generating plant and reaches our home.  This is called the electric power grid.  We also learned that when it reaches our home it gets converted into other forms of energy that we can use to do stuff.  This was all covered on slides 69-75.  Students were assigned some questions out of the textbook on slide 75.  We will take these up on Monday. We then looked at how to calculate the cost of running a device that uses electricity.  We went through a couple of examples (slides 76-78) and then students were given a handout to take home and figure out the power ratings of 8 separate devices that they use on a regular basis at home.  We will use this handout to figure out how much their electrical lifestyle costs.  This handout needs to come back on Monday with at least 8 devices on it and their power ratings.