Quiz 3

Which wavelengths of light can human eyes detect?

• ultraviolet waves

• infrared waves

• visible waves

• X-ray waves

High-energy radiation from the Sun can cause damage to the cells of organisms. Earth's atmosphere protects its inhabitants from much of the Sun's harmful radiation. Which of the following is NOT a type of high-energy radiation that is reflected or absorbed by Earth's atmosphere?

• X-ray radiation

• gamma radiation

• ultraviolet radiation

• microwave radiation

A scientist is designing a medical device that will produce an image of a bone, but not the surrounding tissues. Which type of wave from the electromagnetic spectrum would best complete the scientist's design and why?

• X-ray waves would be the best choice because they have long wavelengths.

• X-ray waves would be the best choice because they have short wavelengths.

• Infrared waves would be the best choice because they have small amplitudes.

• Infrared waves would be the best choice because they have large amplitudes.

A student is designing a device for humans to communicate through detectable light. Which waves should the student use from the electromagnetic spectrum?

• X-ray waves

• visible waves

• infrared waves

• ultraviolet waves

Colleen simulates an X-ray machine by placing a screen on an open shoe box. She places a square piece of cardboard in the middle of the screen. She uses sand to represent X-ray radiation. She sprinkles the sand over the screen on the box. When she removes the screen, she sees an outline of the square piece of cardboard. What did the cardboard represent in her simulation?

• the veins that look white in an X-ray

• the bones that look white in an X-ray

• the person being scanned with X-rays

• the areas that remain black on the X-ray