It's a Wired World Print1234567891011

Summary Quiz

 

    Fill in the blanks.

  1. Electricity travels in a closed path called a __________________.
  2. In the circuit that serves your home, the electricity comes from the ____________________.
  3. Name three conductors:__________________   _____________   ________________
  4. Electric current is measured in _____________. The “pressure” behind it is measured in volts. The work of electricity is measured in ______________.

    Write or draw your answer in the space provided.
  5. Describe two dangerous situations around electricity outdoors:
  6. Describe two dangerous situations around electricity indoors:
  7. Draw your battery and bulb circuit and show the path that electricity travels in this circuit.
  8. Describe or draw the path electricity would take if a person contacted electricity because the insulation on the cord of their electric lawn mower was cracked and the grass was wet.

 

Answers to Quiz

  1. circuit
  2. power plant or generating plant
  3. Answers will vary. Examples: wire, paper clip, water, nails
  4. amps, watts
  5. Climbing transmission towers; contacting high-voltage lines or overhead distribution lines in your neighborhood with kites or balloons; entering a substation (for example, to retrieve a ball or toy); playing on or around a pad-mounted transformer; contacting the service drop to home or school with TV antennas, ladders, long poles, or if the lines come in underground, by digging; climbing trees near power lines.
  6. Using appliances near water in the bathroom or kitchen; putting fingers or other objects in outlets or toasters; overloading outlets; running cords underneath carpets; unplugging an appliance by pulling the cord instead of the plug.
  7. Students should show the bulb with wires connected to the tip and side of the metal housing at the bottom, and the battery with wires connected to each end. Electricity travels from the battery through the wire to the bulb, across the filament, and through the other wire back to the battery.
  8. Electricity would travel from the power cord of the lawn mower through the water in the grass and up through the person’s legs. Depending on the position of the person at the time of contact, electricity could simply travel up one leg and down the other. Or it could travel up one leg, through the heart, and out a hand that was touching the mower handles.

 

 

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