LIGHT WORKSHEET, WAVELENGTH, FREQUENCY AND ENERGY



LIGHT WORKSHEET, WAVELENGTH, FREQUENCY AND ENERGYName___________________________ Date___________________ Period_______Visible LightRed 700 650 nm lower energyOrange 649 580 nmYellow 579 575 nm Speed of LightGreen 574 490 nm c = 3.0 X 108 m/sBlue 489 455 nmIndigo 454 425 nm Violet 424 400 nm higher energyv = f · ? ______________1. Which has the greater ???blue or indigo light? ______________2. Which has the greater ?? red or yellow light? ______________3. Which has the greater energy, a photon of yellow light or a photon of green light? ______________4. Which has the longer wavelength, light with a frequency of 7.32 X 1014 Hz or light with a frequency of 6.0 X 1014 Hz? ______________5. Which has higher energy, ??of 674 nm or ? of 480 nm? ______________6. Which has a higher frequency, orange light or indigo light? ______________7. Which would have the higher frequency, light of wavelength of 521 nm or light with awavelength of 605 nm? ______________8. Which would have the longer wavelength, light with a frequency of 4.5 X 1014 Hz or light with a frequency of 6.19 X 1014 Hz? 9. Sketch a diagram of a wave and label its wavelength and its amplitude.______________10. Give the equation that relates the wavelength and frequency of a light wave to the speed of light.______________11. What is the frequency in hertz of blue light having a wavelength of 425 nm?______________12. Ozone protects the earth's inhabitants from the harmful effects of ultraviolet light arriving from the sun. This shielding is a maximum for UV light having a wavelength of 295 nm. What is the frequency in hertz of this particular wavelength of UV light?______________13. Radar signals are also part of the electromagnetic spectrum in the microwave region. A typical radar signal has a wavelength of 3.19 cm. What is the frequency in hertz?______________14. FM radio dials are calibrated in frequency. In Ottawa, the radio station MAGIC 100 broadcasts its FM signal at a frequency of 101.1 megahertz (MHz). What is the wavelength of this signal in meters?______________15. AM radio dials are calibrated in frequency. A certain AM Brockville radio station broadcasts at a frequency of 830 kHz. What is the wavelength of these radiowaves expressed in meters?______________16. Find the color of light whose frequency is 5.21 X 1014 cycles/sec. ______________17. What is the frequency of light if its wavelength is 5.4 X 10-5 cm? ______________18. Find the frequency of light if its wavelength is 7.3 X 105 picometers. ______________19. Find the wavelength in centimeters of light whose frequency is 7.00 X 1016 Hz. _______________20. Is the light in # 19 visible? How do you know? ................
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