Light and electromagnetic wave

3. – A transparent object that separates white light into different colors.
5. – A material that does not let any light pass through.
8. – When light is taken in by an object instead of being reflected or transmitted.
11. – A material that lets some light pass through but scatters it.
12. – A lens or mirror that bulges outward and can magnify images.
14. – The bouncing of light off a surface.
17. – A type of light that is beyond violet and can cause sunburn.
19. – A lens or mirror that curves inward and can make images appear smaller.
20. – The study of light and vision.

1. – The highest-energy waves in the electromagnetic spectrum.
2. – A material that allows light to pass through clearly.
4. – The range of different colors of light, seen in a rainbow.
6. – A particle of light energy.
7. – The bending of light as it passes from one medium to another.
9. – The longest wavelength electromagnetic waves used in communication.
10. – Electromagnetic waves with wavelengths longer than visible light, used in remote controls.
13. – A type of electromagnetic radiation used in medical imaging.
15. – The number of wave cycles that pass a point in one second.
16. – The distance between two consecutive peaks of a wave.
18. – A device that emits a concentrated beam of light.