Day+11+-+Electricity

Day 11: · The teacher will review and collect Activity 6.1.2 Conductivity. · The teacher will present the Basics of Electricity Powerpoint. · The students will complete the Activity 6.1.3 Static and Current Electricity handout. · The teacher will show //Static Electricity: Snap, Crackle, Jump// from the Teachers Domain website. · Students will use appropriate engineering notebook template for daily entries. In preparing materials for the lab, you should have or be able to locally locate most materials. It is possible to substitute some items for similar ones. For example you may choose to use an acidic fruit besides lemons. You can also cut the lemons in half or into four pieces to create additional batteries, but this will be messier. Simply test the materials that you consider using to verify that they will work as expected. The multimeter will work better if it has alligator clips on the end. Alligator clip adapters that attach to a standard test probe can be purchased. Galvanized nails of any size will work. 10D nails work well and are pictured in the activity. Any solid copper wire will work well. The copper wire in the activity was taken from standard household electrical wire. The ground wire can be used as is, and the other wires can be used if the insulation is stripped. When students attempt to light the LED, it will likely take between four and six lemons. Since diodes only allow electricity to flow in one direction, be sure to reverse polarity when necessary. This is meant to be an interesting introductory activity for the unit. It is recommended that you provide students with the optimal multimeter setting in order to complete this lab. The lesson provides later opportunities for students to learn more specifically how to use the multimeter and what voltage means. They can then draw upon their experiences from this lab to better understand voltage and how the multimeter works in later presentations, activities, and projects. Use this website for further instructions: [|**http://hilaroad.com/camp/projects/lemon/lemon_battery.html**] Another old version of this Activity is the Electrometer and Glass Battery activity that could be easily integrated into a small group lab where students may build and test a variety of batteries such as the lemon battery, the potatoe battery, the penny battery, and a vinegar battery.