Physics
Investigating the 'Mpemba Effect': Can Hot Water Freeze Faster than Cold Water? Print E-mail

Grade Level: 10 -12

This physics project seems like it should have an easy answer. Instead, it turns out to be a great illustration of why it is important to base scientific conclusions on the outcome of controlled experiments. Things don't always turn out as we expect!

Original Article Link: http://www.sciencebuddies.org/mentoring/project_ideas/Phys_p032.shtml?from=Home

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Using a Laser Pointer to Measure the Data Track Spacing on CDs and DVDs Print E-mail

Grade Level: 10 -12

You've probably noticed the colorful patterns "reflecting" from the shiny surface of a CD disk. What you are seeing is actually diffraction of white light, and the rainbows of color are diffraction patterns. In this project you'll learn about how diffraction patterns are generated, and you'll find out how you can use a laser pointer and a protractor to measure the microscopic spacing of data tracks on a CD.

Original Article Link: http://www.sciencebuddies.org/mentoring/project_ideas/Phys_p011.shtml?from=Home

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Using a Laser to Measure the Speed of Light in Jello Print E-mail

Grade Level: 10 -12

Here's a project that shows you how to use a laser pointer and some knowledge of physics to figure out the concentration of sugar dissolved in a liquid.

Original Article Link: http://www.sciencebuddies.org/mentoring/project_ideas/Phys_p009.shtml?from=Home

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Measuring Sugar Content of a Liquid with a Laser Pointer Print E-mail

Grade Level: 10 -12

Here's a project that shows you how to use a laser pointer and some knowledge of physics to figure out the concentration of sugar dissolved in a liquid.

Original Article Link: http://www.sciencebuddies.org/mentoring/project_ideas/Phys_p028.shtml?from=Home

 

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Frequency-Dependent Sound Absorption Print E-mail

Grade Level: 7 - 9

Want to start a garage band, but Mom or Dad won't let you because it will make too much noise? This is a good project for someone who is interested in acoustics and likes to build things. Who knows, it might help you figure out how to make everyone happy.

Original Article Link: http://www.sciencebuddies.org/mentoring/project_ideas/Phys_p029.shtml?from=Home

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