Part A - Reflection (15 points)

In reflection light travels in a medium, hits a boundary and bounces back into the first medium. For example, light travels in air, hits a glass mirror (boundary) and reflects (bounces back) into air.

• Find (a) a shiny flat surface, (b) a convex surface (curved outward) and (c) a concave surface (curved inward) that reflect light and form images.
• Place an object in front of each surface and observe how it forms an image. Answer the following questions:

1. What is the flat surface and where did you find it? (Name of the surface and its location) - 2 points
2. Take a photo of an image created by the chosen flat surface. - 2 point
3. What is the convex surface and where did you find it? (Name of the surface and its location) - 2 points
4. Take a photo of an image created by the chosen convex surface. - 2 points
5. What is the concave surface and where did you find it? (Name of the surface and its location) - 2 points
6. Which surface creates an upside-down image? Which surface(s) creates an image smaller than the object? - 2 points

• Name a common application of a flat mirror. - 1 point
• Name a common application of a convex mirror. - 1 point
• Name a common application of a concave mirror. - 1 point

Part B - Refraction (5 points)

Find an example of refraction of light that you observe. Take a photo and explain your observation. What are the two media (materials) involved in the observed refraction? Remember in refraction light goes from one medium to another medium, WITHOUT bouncing back. For example, when we see a fish in water, light travels from the fish in water (first medium) enters air (second medium) and reaches our eyes.