Across
- 2. em wave used to take pictures of your bones
- 3. area in a sound wave where the air particles bunch up
- 6. Number of complete waves passing a point per second
- 7. em wave used by mobile phones (2)
- 9. an object that transmits light but you can't see through it
- 11. surface that is a good reflector, poor absorber and poor emitter of IR radiation (2)
- 14. this type of lens bends light to a focal point
- 20. The speed of sound ............. in denser mediums
- 21. imaginary line perpendicular to a boundary that we measure our angles to
- 23. an object that does not let light through it
- 24. type of image formed in a plane mirror
- 26. surface that is a good absorber, good emitter and poor reflector of IR radiation (2)
- 27. Which type of wave has a speed of 330m/s
- 29. Type of waves where the vibrations of the particles is at right angles to the direction of energy transfer
- 33. image height/object height
- 34. what colour does a red object look like in white light
Down
- 1. an object that transmits light which you can also see through
- 4. area in a sound wave where the air particles spread out
- 5. The speed of light ............. when it enters a glass block
- 8. the reflected sound from a wall
- 10. Which group of waves have a speed of 300,000,000 m/s
- 12. Time for one complete wavelength/oscillation (2)
- 13. em wave used to cook food in a conventional oven (2)
- 15. wave used to take scans of babies (2)
- 16. what colour does a red object look like in blue light
- 17. em wave emitted by radioactive nuclei (2)
- 18. Unit of frequency
- 19. Sound waves can't travel in a ...........
- 22. Distance between two adjacent crests on a wave
- 25. Type of wave where the vibrations of the particles are parallel to the direction of energy transfer
- 28. em wave that can burn your skin on a sunny day (2)
- 30. This is what happens to light when it changes direction when entering a glass block
- 31. type of image produced where light rays cross
- 32. this type of les spread light out