Energy Efficiency

This item is included in the following series/curriculum: The Shedding Light on Energy series  

  • Grade Level: Junior High (7-9)
  • Subjects: Physics, Biology, Chemistry
  • Produced By: Liacos Educational Media
  • Year: 2014
  • Country: Australia
  • Language: English
  • Running Time: 30m
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We introduce students to the concept of efficiency, which is a measure of how much useful energy you get out of something compared to the amount of energy that you put into it. We answer a bunch of questions including:

  • How much light energy do we get out of light globes compared to the amount of electrical energy that goes into them? Hint: it's not much; they should be called heat globes!
  • How much kinetic energy do we get out of cars compared to the amount of chemical energy that we put into them? Hint: it's a bit more, but not that much more!
  • And how do our arched feet make us the long-distance running champions of the animal world?


This video is the most energy-efficient way of learning everything that you need to know about energy efficiency!

This product includes... *
  • Support Notes
  • Question Sheet
  • Answer Sheet
* Upon purchase you will receive the link for the download

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