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Unit: Electromagnetic radiation

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Wave–particle duality

When you cross a wave with a particle, do you call it a "warticle" or a "pave"? As it turns out... neither.
NGSS:
HS‑PS4‑3
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HS‑PS4‑5
,
HS‑PS4.B.1
,
HS‑PS4.B.3
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HS‑PS4.B
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HS‑PS4

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Electromagnetic radiation and matter

Why does metal turn red when it gets really hot? Why does it turn white when it gets really, really hot?
NGSS:
HS‑PS4‑4
,
HS‑PS4‑5
,
HS‑PS4.B.2
,
HS‑PS4.B.3
,
HS‑PS4.B
,
HS‑PS4

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Quiz

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Emission of electromagnetic radiation

What do a star and a radio station have in common?
NGSS:
HS‑ESS1‑2
,
HS‑ESS1
,
HS‑PS4‑4
,
HS‑PS4.B.2
,
HS‑PS4.B.4
,
HS‑PS4.B
,
HS‑PS4

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Unit test

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About this unit

Light rays, X-rays and gamma rays are all examples of electromagnetic radiation. Learn how the discovery of electromagnetic radiation and its properties have led to new physics concepts and technological applications. Explore the concept of wave-particle duality, interactions between electromagnetic radiation and matter, and emission spectra of electromagnetic radiation.