On 10/27 the 2nd and 3rd grade students learned about electrical force between two objects and built an electroscope! An electroscope is an instrument used to detect the presence of an electric charge by the amount of attraction or repulsion of metal foils. Every atom has negatively-charged electrons, positively-charged protons and neutral-charged neutrons. We also know that opposite charges attract and like charges repel or push away from each other. The amount of force depends on the amount of charge and the distance between the charges. This pushing or pulling force on the charge is called electrical force. And any two objects with different charges from each other have an electric force between them! The students had a lot of fun creating static electricity by rubbing a balloon on their hair and were amazed to see how the foil leaves react to this charge!
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AuthorsMrs. Shim and her STRETCH students Archives
May 2015
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