Across
- 3. – To remove or add electrons to an atom
- 5. – Part of the “CAT scan,” a medical imaging method
- 6. – Toll system that uses RFID to read vehicles
- 8. – A shape that splits white light into colors
- 9. – Barcode system using lines read by a scanner
- 12. – System that detects objects using radio waves
- 15. – High-energy wave used for imaging bones
- 16. – Unit used to measure frequency
- 19. – EM waves felt as heat
- 20. – Scan that uses strong magnets and radio waves
- 21. – Light color with the longest wavelength
- 22. – A measure formed by two lines meeting at a point
- 24. – EM wave that can cause sunburn
- 27. – Short for microwaves, used in ovens and radar
- 28. – Energy traveling as waves or particles
- 29. – Long-wavelength EM waves used for broadcasting
- 31. – A lamp that gives off ultraviolet light
- 33. – The visible part of the electromagnetic spectrum
- 34. high** – Frequency range used for TV broadcasting and mobile phones
- 35. – When light bends as it moves into a new medium
- 37. – The distance between two matching points on a wave
Down
- 1. – EM waves with the highest frequency
- 2. – A space with no matter, where light travels fastest
- 4. – A straight line that shows the direction of light
- 7. high** – Frequency range used in FM radio and TV signals
- 10. – The range of all EM waves
- 11. – How many waves pass a point each second
- 13. – Navigation system that uses satellite signals
- 14. – When light bounces off a surface
- 16. – The height of a wave from its rest position
- 17. – Scientist who described the behavior of electromagnetic waves
- 18. – The part of the EM spectrum with short wavelengths
- 23. – The part of the spectrum humans can see
- 25. – Light color with the shortest wavelength
- 26. – Any material that a wave travels through
- 30. – Science prize given for major discoveries
- 31. – Tag technology that uses radio waves for scanning
- 32. – A tiny packet of light energy
- 36. – The part of the EM spectrum with long wavelengths