The spectrum of white light consists of seven colours, from red to violet. List the colours in order and add the following labels to your list: highest frequency, lowest frequency, longest wavelength and shortest wavelength.
Important Questions on Spectra
The electromagnetic spectrum is a 'family' of waves that includes visible light. Put the following regions of the electromagnetic spectrum in order, one below another starting with the waves that have the greatest wavelength.
visible light, infrared, radio waves, gamma rays, ultraviolet, microwaves, X-rays
The electromagnetic spectrum is a 'family' of waves that includes visible light, infrared, radio waves, gamma rays, ultraviolet, microwaves, X-rays.
Give the electromagnetic spectrum in the decreasing order of wavelength and add the following labels to your list: highest frequency, lowest frequency, longest wavelength and shortest wavelength.
All electromagnetic waves travel at the same speed in empty space. Copy and complete the word equation below giving the value of this speed.
Speed of electromagnetic waves in empty space _____
Copy and complete the following sentences putting suitable words in the gap.
The light from a laser is described as _____ because it is light of a single _____
