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12/21/2016HW#5 - Chapter 5: Light, The Cosmic Messenger1/42HW#5 Chapter 5: Light, The Cosmic MessengerDue: 11:59pm on Tuesday, November 22, 2016You will receive no credit for items you complete after the assignment is due.Grading PolicyRanking Task: The Electromagnetic SpectrumLearning Goal:To understand how the major forms of light differ in wavelength, frequency, and energy.Introduction.The complete range of all possible forms of light is called theelectromagnetic spectrum, sonamed because light carries both electric and magnetic fields.Recall that light behaves as both a particle and a wave; we say that light comes in particlelike "pieces" calledphotons, but that each photon is characterized by awavelength and a frequency.Part AWe divide the electromagnetic spectrum into six major categories of light, listed below. Rank these forms of light from left to right in order ofincreasing wavelength. Torank items as equivalent, overlap them.Hint 1.The wavelength of radio wavesAny light wave with a wavelength longer than 1is considered a radio wave. This fact should help you place radio waves correctly in Part A.ANSWER:
12/21/2016HW#5 - Chapter 5: Light, The Cosmic MessengerCorrectNotice that these wavelengths span an enormous range. The wavelengths of gamma rays can be smaller than the size of an atomic nucleus, while thewavelengths of radio waves can be many meters (or even kilometers) long. Visible light spans only a very narrow range of wavelengths, from about400at the blue (violet) end to about 700at the red end.Part BRank the forms of light from left to right in order ofincreasing frequency. To rank items as equivalent, overlap them.Hint 1.What is the mathematical relationship between frequency and wavelength?HelpResetgamma raysX raysultravioletvisible lightinfraredradio wavesLongest wavelengthShortest wavelength
12/21/2016HW#5 - Chapter 5: Light, The Cosmic Messenger3/42Therefore, __________.HelpResetradio wavesinfraredvisible lightultravioletX raysgamma raysHighest frequencyLowest frequency
12/21/2016HW#5 - Chapter 5: Light, The Cosmic Messenger