The Characteristics of Electricity

We began term two with a new unit on electricity. In yesterday's lesson, Grade 9s discovered how much their understanding of the atom from term two's chemistry unit helps them to understand static electric concepts. Students conducted activities to examine the interactions of charged objects with other objects and with a pith ball electroscope. Students were asked to complete their reflections for homework.
Today we continued with static charges. Students learned that the Law of Charges is similar to magnetic force concepts, except we are now dealing with electric forces. Students learned about the interaction between a charged and a neutral object. They are developing an understanding of charge by induction. They conducted an activity to examine the interaction between a charged object and a neutral object. They are asked to complete the conclusions part of the worksheet for homework and submit it tomorrow.
Students also examined a gold leaf electroscope and learned how this device works to detect charge.

Homework & Reminders:

• Complete conclusions in Charging Objects Activity
• Complete questions on p. 471 of textbook
• Return library trip permission form tomorrow
• Tomorrow is Casual Day
• Library trip on Thursday, March 27