need help explaining

Name Date PART A Complete the sentences using the words below. (There are more words than there are blanks.) Direction of light rays Lene concave diverge less converge farsighted more convex image nearsighted decreases increases parallel 1. The lens in the diagram is a lens. 2. The light rays entering the lens in the diagram are to one another. 3. As the light rays enter the lens, their speed 4. This happens because glass is dense than air. 5. As light leaves the lens, the rays with one another at the focal point. 6. This kind of refraction in lenses can help people with vision. PART B Answer the questions in the space provided. 7. You place a straight straw into a glass half-filled with water. Now the straw appears to be crooked. What can explain your observation? Use the terms refracted, density, speed, and direction in your answer. 8. The bottom portion of the straw also appears thicker and bigger than the top portion of the straw. Explain why. Macmilan'S=Graw Hill Belongs @ 1953 Wave Energy Lesson 5 10