N4 Waves & Radiation

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Across
  1. 2. – The time taken for half of the radioactive nuclei in a sample to decay.
  2. 4. – High-energy electromagnetic waves used for medical imaging.
  3. 5. – Very high-frequency electromagnetic radiation released from atomic nuclei.
  4. 7. – When a wave bounces back after hitting a surface.
  5. 9. – Electromagnetic radiation felt as heat and used in remote controls.
  6. 10. – The maximum displacement of a wave from its central position.
  7. 12. – How many complete waves pass a point in one second.
  8. 13. – Electromagnetic waves used in cooking and communication.
  9. 16. – Type of wave where the particles vibrate parallel to the direction the wave travels.
Down
  1. 1. – The bending of a wave’s path as it enters a different medium.
  2. 3. – The constant, low-level radiation present in the environment.
  3. 6. – The distance between two identical points on consecutive waves.
  4. 8. – Type of wave where the particles vibrate at right angles to the direction of travel.
  5. 11. – Radiation from the Sun that can cause sunburn.
  6. 14. – A high-speed electron emitted from an unstable nucleus.
  7. 15. – Type of nuclear radiation consisting of two protons and two neutrons.