Good Vibrations - Simple Physics/Sounds (2-5)
Explore the relationship between vibrations and pitch with this Dirtmeister Science Lab brought to you by Scholastic.
http://teacher.scholastic.com/dirt/vibes.htm
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Hearing My Own Voice (3-6)
Why is it that I sound different on a tape recording - different from the way I usually sound? This Beakman & Jax science site explains the answer and presents an experiment that students can conduct offline to explore the concept further.
http://beakman.com/myvoice/myvoice.html
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Car Horns: Doppler Effect (3-6)
How come a car horn sounds low when it's far away and high-pitched when it's closer? Here is another Beakman & Jax explanation and experiment for your class to try.
http://beakman.com/doppler/doppler.html
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