| Questions | Answers |
|---|---|
| A lens that causes light to spread out | Concave Lens |
| A lens that focuses light | Convex Lens |
| To bend light or sound waves as they pass through different mediums | refract |
| the highness or lowness of a sound | pitch |
| a way of transferring energy from one place to another | wave |
| the highest point of a wave | peak |
| to bounce energy off an object | reflect |