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Energy and Force

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  • What type of energy toasts a marshmallow?
    Thermal energy
  • Which activities on the list are examples of mechanical energy?
    Activities 1, 4, and 6
  • Why is it difficult to walk on a road when it's wet?
    When the road gets wet, it has less friction, making it more slippery.
  • A student is using scissors to cut paper. What form of energy is used?
    Mechanical energy
  • Name something that has light and sound energy.
    Answers will vary.
  • What type of energy adds warmth to the room?
    Thermal energy and electrical energy
  • Would this yarn attract a magnet? Why or why not?
    No because it is not made of iron (metal)
  • What kind of energy does the guitar produce when played?
    Sound energy
  • A soccer ball kicked on the grass will slow down because of which force?
    Friction
  • Which of these materials would conduct electricity the best? Metal, wood, plastic, or glass?
    Metal
  • True or false: Friction speeds up moving objects.
    False
  • In a circuit, what does the switch do?
    It open and closes the circuit, or starts and stops the flow of energy
  • What is force?
    A push or pull applied to an object
  • What form of energy does this blender use?
    Electrical energy and mechanical energy
  • True or False: Heavier objects require more force to move and stop.
    True
  • How can you make sure that your experiment is accurate and reliable?
    Repeat your experiment several times
  • Why do these nails have magnetic force?
    It is because they are made of metal and can attract a magnet.
  • Can a plastic string be used to complete a circuit?
    No
  • Gravity causes things to move up or down toward the center?
    Down
  • What forms of energy come from the Sun?
    Thermal and Light
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