Electrical Safety World VideoPrint123456

Teacher’s Guide

The Electrical Safety World video explains electric science concepts and how to use electricity safely in daily life. The video includes five 3-minute episodes, each on a different safety topic. This presentation guide includes learning objectives, key concepts, discussion questions, and follow-up activities to reinforce the core messages of each episode.

You may wish to introduce these basic energy concepts to your class before showing the video:

Energy is the ability to change or move matter. Without energy there would be no motion‚ no light‚ and no heat‚ and life would not exist. The sources of energy we rely on are very important in our everyday lives. Appliances like refrigerators‚ ovens‚ heaters‚ water heaters‚ clothes dryers‚ TVs‚ computers‚ and air conditioners all need energy to work. Explore these concepts through the following classroom activity:

  • Make an energy use chart in your classroom. Make three columns on the white board: one each for “What I Did‚” “Appliance/Equipment I Used‚” and “Energy Source” (such as electricity‚ propane‚ natural gas‚ charcoal‚ and so on).
  • Have students call out activities they have participated in during the last week‚ and the appliances and energy sources that facilitated these activities. Which energy sources are most common?

For most classrooms‚ electricity will be the most commonly used form of energy. It is important to understand the following principles about electricity so we can use it safely:

  • Electricity is always trying to get to the ground.
  • Electricity travels on power lines and electrical wires in a closed loop called a circuit. It will stay in its circuit unless something or someone gives it a path to the ground.
  • Conductors are materials that allow electricity to flow through them easily‚ and insulators are materials that do not allow electricity to flow through them easily.
  • Water is an excellent conductor of electricity. Because the human body is mostly water‚ your body is also a good conductor of electricity.
  • Electricity will always take the easiest path to the ground. If you become part of that path‚ your body will conduct electricity and you will be injured‚ or even killed.
  • Volts or voltage are the measurement of the pressure under which electricity flows. Contacting a low-voltage circuit can cause serious injury or death. Contacting a high-voltage circuit (such as a power line) often blasts a person clear‚ but the shock or fall can be fatal.

 

 

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