Static Electricity Aim: To understand and describe static, repulsion and attraction Keywords: Static: A build-up of electricity due to the lack of a conductor for the energy to flow through Repulsion: The property that causes two objects with the same type of charge to repel or push each other away. Attraction: The property that causes two objects with different charges to attract or pull each other together. Proton: A positively charged particle. Electron: A negatively charged particle Neutron: A neutrally charged particle. Focus Question: Why do we get electric shocks? Electric shocks are caused when we transfer a large amount of either positive or negative energy onto an object with the opposite energy, or vice versa. When two objects rub or a pulled off each other, some of energy comes off, leaving one object with an excess of one type of charge and the other object with the opposite energy. If the energy has nowhere to go via a conductor, then it will build up, creating ‘static.’ This is the energy that is transferred when we get electric shocks. This lesson we learnt about static electricity, repulsion, attraction and their properties. We used the website ‘School for Champions’ to investigate how particles of different charges interact. This diagram shows two objects with differently charged particles. The object on the left is positively charged and the object on the left is negatively charged. We can see that their difference in charge is causing them to pull or ‘attract’ each other. This property is known as attraction. This diagram shows two objects, both of which are positively charged. The excess amount of a like charge is causing the two objects to push each other or ‘repel’ each other. This is known as repulsion. Lesson Summary
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