1. True or false: For you to see a rainbow, the raindrops must be between the sun and you.
2. Name the property of a wave that describes its ability to bend around obstacles in its path.
3. When a narrow beam of light passes by a sharp edge, around a fine wire, or through a narrow slit or a pinhole, the beam tends to spread or flare out. The distinct shadow formed is called a (n) ________.
4. Name the person who first performed the famous double-slit experiment.
5. When waves add together to form a larger displacement or more intense light, this is called ________.
6. When waves add together to form a smaller displacement or less intense light, this is called ________.
7. How do Polaroid sunglasses reduce the glare of bright sunlight?