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Science 3 p.510-516

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  • What is a circuit?
    made of parts to allow an electric current to flow
  • What is an electrical charge?
    a property of matter
  • Why do clothes stick together when they come out of the dryer?
    the positive and negative particles attract each other in the clothes
  • Energy from electric currents can be used to do what in your home?
    power light, computer, hair dryers, and any other machine that is plugged into the plug on the wall
  • What do head phones turn electrical energy into?
    sound
  • What is an insulator of electricity?
    Doesn't let electricity flow through it....plastic, etc
  • What are the two types of electrical charges?
    positive and negative charges
  • Why is there plastic on the outside of the wires that are plugged in to the wall?
    to stop electricity flowing into people
  • Describe a closed circuit. Give an example.
    one hat the switch is closed letting the electricity flow. light in room
  • What does a toaster turn electrical energy into?
    heat
  • What does a switch do?
    it can open or close an electric current
  • What is a closed circuit? give an example
    when electric current can flow
  • What happens when you close a switch on a circuit?
    stops the flow of electricity
  • What is a flow of charged particles called?
    electric current
  • What can cause you to get a shock?
    static electricity
  • Describe an open circuit. Give an example
    one that a switch is open stopping the flow of electricity. Turn the light off.
  • What is a build up of an electrical charge?
    static electricity
  • What is a conductor of electricity? give an example
    lets electricity flow through it...copper wire
  • What happens when you rub a balloon on a sweater?
    negative particles move from the sweater to the balloon
  • What does a positively charged object pull?
    a negatively charged object
  • What do objects with positive charges do to each other?
    push each other away
  • Why does a balloon stick to the wall after rubbing it on a sweater?
    the balloon is negatively charged and attracts the positively charged particles on the wall
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