Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. (Physics Only) How is the light in the visible light spectrum different?
   • Each colour within the visible light spectrum has its own narrow band of wavelength and frequency.
2. (Physics Only)What types of waves are electromagnetic?
   • Electromagnetic waves are transverse waves that transfer Energy from the source of the waves to an absorber.
3. (Physics Only) What type of spectrum do Electromagnetic waves form?
   • Electromagnetic waves form a continuous spectrum.
4. (Physics Only) What type of speed to electromagnetic waves travel?
   • All types of electromagnetic wave travel at the same velocity through a vacuum (space) or air.
5. (Physics Only) How are the electromagnetic waves grouped?
   • The waves that form the electromagnetic spectrum are grouped in terms of their wavelength and their frequency.
6. What is the order of electromagnetic waves from biggest wavelength to shortest wavelength?
   • Going from long to short wavelength (or from low to high frequency) the groups are: radio, microwave, infrared, visible light (red to violet), ultraviolet, X-rays and gamma rays.
7. (Physics Only) What type of electromagnetic waves do human eyes detect?
   • Human eyes only detect visible light and so detect a limited range of electromagnetic waves.
8. List the practical applications of electromagnetic waves.
   • - radio waves - television and radio - microwaves - satellite communications, cooking food - infrared - electrical heaters, cooking food, infrared cameras - visible light - fibre optic communications - ultraviolet - Energy efficient lamps, sun tanning - X-rays and gamma rays - medical imaging and treatments.