<p> Day 1.1 Reflection and Refraction of Light</p><p>Review: Most of this class should be a review from optics in grade 10 and physics in grade 11. 1) What does a light beam from a laser look like? Explain.</p><p>2) Does regular light also travel in straight lines? How can you demonstrate this?</p><p>3) A beam of light is sent into a tank of water with a mirror on the bottom. What will you see?</p><p>4) A laser beam is sent toward a glass of water (top view) what will you see?</p><p>5) How is reflection similar to refraction?</p><p>6) How is reflection different from refraction? Include equations for angles. </p><p>Modelling Refraction 7) What changes as water waves move from deep to shallow water? (Hint: v = f  ) A) wavelength, frequency, speed B) direction, frequency, speed </p><p>C) direction, wavelength, speed D) direction, wavelength, frequency http://www.youtube.com/watch?v=stdi6XJX6gU </p><p>8) Draw a diagram to explain how refraction can be explained with large group of people. </p><p>9) Compare the refraction of water waves to that of light. When light goes from air to water it will</p><p>A) slow down B) speed up C) bend toward normal D) bend away from normal Go to PhET Bending Light http://phet.colorado.edu/en/simulation/bending-light </p><p>10) Refraction of waves http://www.youtube.com/watch?v=7BIc7Oonru0 How will the water waves change as they move slower when passing over the shape? Hint: What does light do?</p><p>11) Refraction of sound using a balloon. http://www.youtube.com/watch?v=eHZJFa055Xo</p><p>Sound travels slower through carbon dioxide. What will happen if a balloon of carbon dioxide is put between a speaker and a microphone? The sound will become</p><p>A) louder B) quieter C) higher pitched D) lower pitched</p><p>12) Other aspects of refraction. </p><p> a) Dispersion: White light can form a rainbow when passing through glass or water. How does the wave model explain this? How does the particle model explain this? Go to PhET Bending Light http://phet.colorado.edu/en/simulation/bending-light. b) Total internal reflection? What is it and what causes it? </p><p>13) Light reflects at equal angles. It loses intensity but does not lose speed or change colour. Does reflection suggest that light is made of waves or particles? Compare the behaviour of a bouncing ball and reflecting waves. </p><p>14) Light changes direction and speed when it goes from one medium to another. Does refraction suggest that light is made of waves or particles? Explain.</p><p>Textbook: 9.1 p. 452 # 4 – 9, 488 # 1, 2, 11 Draw a labelled diagram of waves refracting including the boundary, normal, incident and refracted wave fronts and wave rays. </p>