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Grade 5: Light and Sound (What is sound? (Pitch (a80bf9f958f926a1600674887…
Grade 5: Light and Sound
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What is light?
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Light travels faster than anything else in the universe. (300,000 km/s)
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Electromagnetic spectrum
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Wireless phones transmit and receive microwaves which have some of the longest wavelengths and lowest frequencies in the electromagnetic spectrum.
Humans can see visible light which has intermediate wavelengths and frequencies near the middle of the electromagnetic spectrum.
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