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Light, Sound & Conservation

This year, we paired the Grade 4 Science topic Light and Sound with the Grade 5 Science topic Conservation of Energy and Resources.  Students in both grades read, watched educational videos, and participated in hands-on labs., exploring their respective Science topics.

These are photos of our device-testing lab., in which groups of students measured the wattage of everyday household items, using special watt meters. The Grade 4's took particular note of the conversions from electrical energy to sound, light, heat and/or movement with each device. The Grade 5's considered which types of devices used the most and least amount of energy.

The Grade 5's concluded that devices intended to create heat for the user (e.g. curling irons, blow dryers, curling irons, toasters and space heaters) use the most energy, and devices that create little or no heat tend to use a lot less energy (e.g. LED light bulbs, compact fluorescent light bulbs, laptop computers, radios).

Another lab. involved testing a solar panel and a twig-burning stove that is capable of generating electricity to charge devices. Before going outside to test these devices, students watched the following videos, which explain how these alternative energy sources work:

These are photos of the class outside, testing the solar panel and electricity-generating camp stove.


Thank you for visiting our class BLOG.  If you have any questions or comments, feel free e-mail me (Margaret Black):  mblack@scdsb.on.caOpens in a new windowor to add a comment to this page.

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