1) Hz stands for a) Hertz b) Wavelength c) Meters d) Frequency 2) Wavelength is measured in a) Hertz b) Meters c) Millimeters d) Miles 3) The top of a wave is called the a) Crest b) Trough c) Wavelength d) Frequency 4) The bottom of a wave is called the a) Crest b) Trough c) Wavelength d) Frequency

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