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Electricity and Magnetism by Natalie Kelly Static Electricity Static electricity is made up of 2 charges, positive and negative.(+ and-) Charges cause things to stick together. Same charges repel, opposites attract. In the investigate, we rubbed a balloon to pick up confetti, then did the same thing using 1 rub from a dryer sheet. Making Circuits A series circuit is a continuous circle and stops if one part is removed. It has one path for electricity to flow. A parallel circuit has two paths for electricity to flow and doesn’t stop if one part is removed. In the investigate, we built a small series circuit. Magnetic Poles Every magnet has two poles, north and south. These are different from the geographic north and south poles. Like electrical charges, opposite poles attract and same poles repel. In the investigate, we tested magnets to see how they reacted to other magnets and classroom items. Magnetic Fields There is a giant magnetic field around the earth. Magnetic fields around a magnet attract the most things around the poles, because the force is strongest there. Since we can’t see magnetic fields, you can put iron filings on and around the magnet to see the magnetic field around the magnet. Electromagnets An electromagnet is coils of wire around an iron core. It causes the core to become magnetic. The core will become a temporary magnet. In the investigate, Miss Young built an electromagnet under the camera. Then my group and I built a simple motor. How Electrical Energy is Used Electricity is used in many ways, every day. Electricity is used in factories to move assembly lines. Stove burners produce heat and red light. Electricity heats water for showers, and cools or heats houses. In the investigate, we classified different pictures into categories on a poster board.