Unit 8

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Across
  1. 1. Materials that allow electricity to flow through them are called electrical _______________.
  2. 4. A _______________ is used to open or close a circuit.
  3. 5. The opposition of a material to the flow of electric current is called _______________.
  4. 7. Materials that do not allow electricity to flow through them are called electrical _______________.
  5. 8. A voltmeter is used to measure _______________.
  6. 9. The unit of electric current is _______________.
  7. 11. When a current flows through a coil, the coil acts like a magnet. It is called an _________________________.
Down
  1. 2. An atom consists of a positively charged _______________ surrounded by negatively charged electrons.
  2. 3. The resistance of a _______________ can be changed.
  3. 4. In a _______________ circuit, the current is the same at every point in the circuit.
  4. 6. Electricity flows through a path called an electric _______________.
  5. 10. In a _______________ circuit, the current flowing in the main loop is the sum of the currents flowing in the branches.