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Brainlag Learn / GCSE Physics

Waves and the electromagnetic spectrum

Transverse and longitudinal waves, v = fλ and the wave practicals, reflection and refraction, and the electromagnetic spectrum with its uses, dangers and the infrared practical.

Lessons

  1. Transverse and longitudinal wavesWhat a wave moves and what it leaves behind, the two kinds of wave, and reading amplitude, wavelength, frequency and period. 20 min, free
  2. Wave speed and measuring wavesv = fλ with prefixes and standard form, and the required practical with a ripple tank and a string. 25 min, with the Waves on a string simulation, free
  3. Reflection and refractionThe law of reflection, why a change of speed bends a wave towards or away from the normal, and wavefronts. 25 min, with the Refraction simulation, Plus
  4. The electromagnetic spectrumThe seven groups in order, what they share, c = fλ in standard form, and timing radar echoes and satellite signals. 25 min, Plus
  5. Uses and dangers of electromagnetic wavesWhat each part of the spectrum is used for and why, which parts are ionising, radiation dose, how radio waves are made, and the infrared practical. 25 min, Plus

Practise and test

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