How can we tell whether an item is charged electrostatically? This super simple piece of apparatus is easy to make and use and will definitely intrigue your students. This is yet another example of induction (when a charged item attracts a neutral one). The concept is addressed and touched upon, though for a more thorough explanation, you'll want to check out one or two of the other activities in this series.
• Charged items attract neutral ones.
• Invisible charges can produce real forces.
• Electrostatic fields are non-contact forces.
paper, pencil, binder clip + some type of charged object like a charging rod, balloon, or Van de Graaff
Extensive teacher notes address the many questions that come up. You shouldn’t have to do outside research on this topic unless you want to.
This lab takes about 30 mins.
• Scaffolded writing prompts & lab reporting
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