We have looked at the relative sizes of different waves, but how big are these waves in real life? There is a huge range in the size of electromagnetic waves: some are bigger than a house, and others are smaller than a grain of sand. Here’s a diagram that shows some everyday objects to help us visualize the size of these wavelengths.
Click the EM spectrum to enlarge the image and get a sense of scale of the sizes of different wavelengths. Drag and drop each EM wave to the object that best represents the size of its wavelength.