The portion of the electromagnetic spectrum most useful to living things is...

The frequencies of the electromagnetic spectrum with the highest energy are of...

Visible light has a higher frequency than...

X-ray devices use electromagnetic waves to create images that let doctors see inside the human body. Which best describes how x-rays are able to help create these images?

Which type of wave has the shortest wavelength?

Which of the following shows electromagnetic waves in order from highest to lowest energy level?

What two properties of an EM wave change as you move from one part of the EM spectrum to another?

Why does grass appear green?

Which of these statements about frequency is true?

In order for the human body to make vitamin D, some exposure to what kind of lightwave is necessary?

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