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Science · Grades 3–4

Wavelength

noun

The distance between one wave crest and the next in a series of waves.

Example Sentences

"Red light has a longer wavelength than blue light."

"Radio waves have much longer wavelengths than X-rays."

Synonyms & Related Terms

wave distance

Quick Check

Which best describes the meaning of wavelength?

Study Tips

To remember wavelength, try writing it in a sentence of your own. Connect it to something you already know about science.

Use it in conversation today — saying a word aloud three times helps lock it into long-term memory.