Waves and Radiation Year 9
Across
- 3. Common source of background radiation. Place where sick people are treated.
- 7. A sound wave with a high frequency has a high ______
- 10. The units of wavelength and amplitude
- 12. Waves such as Light which vibrate up and down
- 15. Seismic waves which are longitudinal
- 17. Light we use to see
- 20. Number of waves in the Electromagnetic spectrum
- 21. Particle which is an electron
- 22. The longest waves in the EM Spectrum
- 25. Use of Ultraviolet Light
- 26. Disease caused by too much radiation
- 27. Units of radiation dose
- 29. Use of gamma rays
- 31. The units of Wave Speed
- 36. Type of counter to measure radioactivity
- 38. The distance from one peak of a wave to the next
- 40. How far through a material waves or radiation will pass
- 43. Typical background counts per second
- 44. The number of complete waves in 1 second
- 45. Time taken for half of a radioactive sample to decay
- 47. Use of Microwaves
- 48. Alpha, Beta and Gamma are types of ____________
- 49. Wave which is given out as nuclear radiation
- 50. All EM waves travel at the _________ speed
Down
- 1. Particle which is a Helium Nucleus
- 2. Charge on an Alpha particle
- 4. Radiation given out as heat and used in TV Remotes
- 5. Gamma waves are only stopped by thick concrete and _____
- 6. Alpha Particles are stopped by a few centimetres of air and ______
- 8. Waves used for mobile phones and to heat food
- 9. Part of the EM spectrum used in Sunbeds
- 11. The are seven types of waves in the EM ____________
- 13. A sample which gives off Alpha, Beta or Gamma radiation is said to be __________
- 14. Thousand Millisieverts which can cause death
- 16. Type of waves that are transverse
- 18. Waves such as sound which vibrate backwards and forwards
- 19. Can by S or P waves
- 20. Type of waves that are longitudinal
- 23. Radiation around all of the time
- 24. EM stands for ____________
- 28. Radioactivity from space
- 30. The height of a wave
- 32. Wavelength x Frequency = _________
- 33. Seismic waves which are transverse
- 34. Charge on a Gamma wave
- 35. Beta particles are stopped by a few mm of __________
- 37. Charge on a Beta Particle
- 39. The units of frequency
- 41. When radiation removes an electron from an atom. The reason why some waves and radiation are dangerous
- 42. The time for one complete cycle of a wave
- 46. Part of the EM Spectrum used to see bones