Across
- 5. Cyan, yellow and magenta are ______ colours of light
- 8. A high-energy electromagnetic radiation that can penetrate materials
- 11. The _________ spectrum the range of colours that can be seen by the eye (red, orange, yellow, green, blue, indigo and violet)
- 12. The maximum distance a wave extends beyond its middle position
- 13. A type of electromagnetic radiation with wavelengths ranging from fractions of a millimetre to tens of centimetres, used in communication and cooking
- 15. Electromagnetic _______ - the entire range of frequencies of electromagnetic radiation, from high-energy gamma rays to low-energy radio waves
- 17. A type of electromagnetic radiation with energies just above those of visible light, contained in sunlight
- 19. Electromagnetic _________- a range of electromagnetic waves consisting of oscillating electric and magnetic fields travelling at the speed of light
Down
- 1. Wave _______ - the transfer of energy without transferring matter
- 2. A type of extremely high-energy electromagnetic radiation emitted by radioactive materials
- 3. ______ internet (Wi-Fi): a method of transmitting an internet signal using radio waves
- 4. A type of electromagnetic radiation with energies just below those of visible light, detected by our skin as heat
- 6. splitting of white light into separate colours
- 7. Electromagnetic radiation that is travelling in a single plane
- 9. Red, green and blue are _______ colours of light
- 10. The interaction of light with particles in the atmosphere, depending on colour and frequency of the light
- 14. ________ fibre - a narrow tube of glass or plastic used to transmit pulses of light
- 16. A type of electromagnetic radiation with wavelengths ranging from less than a centimetre to hundreds of kilometres, used in communication
- 18. A transparent material that allows light of a particular colour to pass through