3.04 Optics Exploration [Place your name here] Purpose Simple materials will be used to better understand optics, including reflection, refraction, and total internal refraction. Problems This exploration will include 3 activities to investigate the following: 1. How does a camera obscura invert an image? 2. Why does a fishbowl or other curved, clear substances, distort images? 3. What makes light stay within a stream of water and not leave to the surrounding air? Please bold your answers after each question or type them in another color that is easy to read (such as dark red). Part 1: Camera Obscura Experimental Go to the Pringles Pinhole Camera Website and follow the directions there. Observations and Discussion 1. Describe or and draw what you saw when looking through your camera obscura. 2. Why would you not see an upside down image of what is outside on a wall opposite of a window? 3. Using what you know about light, explain why the image appeared as it did. Part 2: Total Internal Reflection Materials empty 2-L bottle pushpin tape . . water bucket or sink laser Procedure 1. Using the pushpin, poke a large hole (push the pin through the bottle 2-3 times) in side of the empty bottle about 4 inches from the bottom. Cover the hole with a piece of tape.2. Fill the bottle about half full of water. 3. Set the bottle upright on a table or countertop so that when the water comes out of the hole it goes into a bucket or sink. Remove the tape covering the pinhole. 4. Shine a laser through the bottle so that it exits through the hole with the stream of water. 5. If you don't have the materials for this here is a video you can view: WM Observations and Discussion 1. Describe what happened to the laser as it went through the bottle. 2. Explain why this happened. 3. Would we see the same results if we shined the laser from air to the stream of water? Try it and explain your results. Part 3: Fishbowl Lens Mate rials o curved shbowl 0 news paper 0 magnifying glass Procedure 1. Plaoe a piece of newspaper or other paper with print behind a shbowl with water in it. 2. Compare how the print looks through the air and throu gh the shbowl. Move the paper so it is close to the shbowl and further from the sh bowl. Note any changes. Observations and Discussion 1. How did the print oompare when it was being viewed through the air and directly behind the shbowl? 2. What happened when you moved the print further back from the shbowl? 3. Look at a magnifying glass. which makes the print larger as did the fishbowl. Describe the shape of the magnifying glass when looking at it from the side. What kind of lens is the magnifying glass? Part 4: Optical Illusions Watch this video: WWW. Give a short summary below of what the important points were from the video