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This lab uses the Bending Light simulaon https:i'fphet.colorado.edufsimsfhtmli'bending-lightllatestfbending-light en.html Everyday Physics in your life: What ideas do you have about why things look different under water? Develop your understanding: 1. Explore the Intro screen to nd some things that happen when light rays shine into water. Figure out how to test what happens when the light rays come from underwater. Compare your ideas about why things look different under water to how light rays appear to \"bend.\". Explain your understanding: 2. Experiment in the Intro screen using the tools to observe what happens to light when it shines on water. 0 Ranf , G) Wave Use both the Ray and Wave models for light. a. Write about how each tool helps investigate the behavior of light. b. Describe the behavior of light when it shines on water. Provide examples for a variety of incident angles to support your description. 0. What changes if the light is underwater and the light goes into air? d. What changes if you shine light on glass? e. Test materials with other indexes of refraction to see if your ideas about the behavior of light seem comprehensive. f. Write a summary description of What happens to light when it goes from one medium to another. Use the following vocabulary words in your summary: index of refraction, incident angle, reected angle, and refracted angle. 3. Use More Tools screen to observe variation in refraction as the wavelength (color) of incident light varies. a. The difference in refraction angles is small and difficult to detect in this simulation, so I have shown a possible experimental setup for you to try. How much does the angle of refraction change from 380nm to 700nm when the incident angle is 80? Run some of your own experiments to see if you can detect a difference in refracted angles at other incident angles. Why did I choose 80 degrees? O Ra 9 Ware 200 nm Material Air 4 ridex of Refraction (0 1.000 0 *60 Water Material Custom idex of Refraction (m) 1.500 Water Angles Bending Light PHET = b. Use the Speed tool as you vary the wavelength to help understand why the angle of refraction varies. Describe the results of your experiments c. Does the color of the color of the light change during refraction or reflection? 4. Explore the Prisms screen to see how your understanding of refraction applies when light travels through a medium like glass. Give specific examples and images from the simulation to explain how your understanding applies. Simulation tip: Remember that the Normal dashed line and protractor will help take measurements. Emdronment Air Index or Refraction (r) Water $13% Objects5. Experiment to find ways to make rainbows. a. Insert at least one setup where light passing through a prism gives a rainbow and describe why a rainbow is formed. b. Explain why only some types of light will yield rainbows. Test your understanding and self-check Open the lll Bending Light simulation 6. Show that you can use Snell's Law (nlsin1 = nzsing) to predict the angle of reection and angle of refraction for several scenarios. Show your work. After you have completed the calculations, use simulation to check your work For incident angle of 30 degrees light shining from air into water from water into air from air into glass from water into glass from air into a medium with an index of 1.22 sun957s