Physical Science

2. In optics a system that consists of two or more plane surfaces of a transparent solid at an angle with each other
7. To send from one place to another
8. To discover the presence of something
10. Radio Detection and Ranging
11. The increase of an objects apparent size by using lenses or mirrors
14. The rate at which energy flows through a given area of space
15. Sound Navigation and Ranging
18. An image that is formed by the intersection of light rays
19. Slow vibrations of frequencies lower than 20 Hz
20. Any sound wave with frequencies higher than 20,000 Hz

1. A line in space that matches the direction of the flow of radiant energy
3. In optics the process of separating a wave of different frequencies into its individual component waves
4. A longitudinal wave that is caused by vibrations and that travels through a material medium
5. An image from which light rays appear to diverge even though they are not actually focused there
6. A unit or quantum of light
9. Dented mirrors
12. To change the natural appearance of something
13. A transparent object that refracts light waves such that they converge or diverge to create an image
16. A phenomenon that occurs when two objects naturally vibrate at the same frequency
17. A measure of how high or low a sound is perceived to be