unit 2 vocabulary part 2

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Across
  1. 2. Energy: The energy made by the movement of electric charges called electrons. We use electrical energy every day to power lights, computers, and refrigerators.
  2. 4. Transfer: The movement of electrical energy from one part of the circuit to another. When you plug in a fan, electrical energy changes into motion and sound energy.
  3. 5. The positive side of a battery where electrons flow in. The cathode is where electrical energy is received or used.
  4. 6. Circuit: A circuit that has more than one path for the current to travel. In a house, lights are wired in parallel so one can turn off while others stay on.
  5. 9. Circuit: A circuit that has a break where electricity cannot flow. When you remove a battery or flip a light switch off, the circuit is open and the current stops.
  6. 12. The continuous flow of electric charges through a circuit. It is like the “river” of electricity that keeps a device working.
  7. 14. A material that resists the flow of electric current. Plastic coatings on wires are insulators that protect us from electric shocks.
Down
  1. 1. The opposition that slows down electric current as it moves through a material. For example, a thin wire has more resistance than a thick wire and can get hotter.
  2. 3. A closed path that allows electrical energy to move through it. A flashlight works only when its circuit is complete from the battery to the bulb and back.
  3. 7. The negative side of a battery where electrons flow out. In a battery-powered toy, the anode pushes electrons into the wires.
  4. 8. A material, such as copper wire, that allows electric current to pass easily. Conductors are used to connect all parts of a circuit.
  5. 10. Circuit: A circuit in which electrical current flows through only one path. If one bulb burns out in a series circuit, all the others go out too, like in old Christmas lights.
  6. 11. (Cell): A device that stores chemical energy and changes it into electrical energy. The positive and negative ends of a battery send electrons through a circuit to power a light or motor.
  7. 13. Circuit: A complete loop that lets electricity flow continuously. When you turn on a lamp, electricity moves in a closed circuit from the outlet to the light bulb.