Across
- 2. when the input and natural frequency are the same
- 5. the change in a sound wave from a moving source relative to an observer
- 8. when current repeatedly goes forward and backward
- 9. vibrations between 20 - 20,000 Hz which cause the ear drum to vibrate
- 10. a property which resists the passage of ultrasound
- 11. radionuclide commonly used to test the function of a thyroid
- 13. ensures gamma rays which pass through are aligned
- 15. ability of certain materials to generate an electric charge in response to being squeezed
- 17. one of the factors considered when choosing a radionuclide
- 18. branch of radiography which uses imaging technology to examine patients
- 20. a spectrum which consists of radio, microwaves, visible light and gamma waves
Down
- 1. the number of waves every second
- 3. increasing this causes the contrast on a x-ray image to increase
- 4. type of x-ray produced from transitions
- 6. a cyclical wobble
- 7. uses continuous x-rays to record a video
- 10. your physics teacher's first name
- 12. the process of sending and receiving signals to locate objects
- 14. the flow of charges
- 16. most used radioisotope in medical imaging
- 19. detected by an x-ray detector in a CT scan