Go to the following NASA website and read about the electromagnetic spectrum.

The Electromagnetic Spectrum

This will give you a quick overview of the electromagnetic spectrum. You can click through each of the individual wave types at the bottom of the page if you choose.

Now that you know what the electromagnetic spectrum is, it’s time to review the wave types and their order along the spectrum. Review the flashcards based on the electromagnetic spectrum.

Electromagnetic Spectrum

Once you review the flashcards, try playing the scatter game with the vocabulary. Drag and drop the word or phrase on top of the correct definition. When you get it right, the word and definition will disappear.

Scatter Game

Let’s move on to seeing how the different wave types fall along the spectrum based on their frequency. Go to the following website.

Electromagnetic Spectrum

Move the green arrow along the spectrum and see how wavelength and frequency change. You will also notice how this affects energy and wavelength.

Lastly, review the following PowerPoint presentation and answer the following questions.

1. What is the relationship between frequency and wavelength? As __________ decreases, __________ increases.
   
   Interactive popup. Assistance may be required.

   Answer #1

   wavelength, frequency
2. Can you actually see x-rays?
   
   Interactive popup. Assistance may be required.

   Answer #2

   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?
   
   Interactive popup. Assistance may be required.

   Answer #3

   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?
   Interactive popup. Assistance may be required.

   Answer #4

   Neither. All electromagnetic radiation travels at the speed of light.