Electromagnetic waves are all around you. To learn more about each type of wave, scroll over the images below. The definitions in this interactive are from the NASA website.

Questions:

1. What is the relationship between frequency and wavelength? As ___________decreases, __________ increases.

   Interactive popup. Assistance may be required. Check your Answers

   Answer: wavelength, frequency
2. Can you actually see x-rays?

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   Answer: No, what you see in the x-ray image of bones is the
   "shadow" of the bones due to their ability to block x-rays.
3. Which color is more energetic, red or yellow?

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   Answer: Yellow has shorter wavelengths than red.
   Therefore yellow’s frequency and energy is higher than red’s.
4. Which type of wave travels faster, gamma, radio, or neither one?

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   Answer: Neither. Both radio waves and gamma waves travel at the speed of light.