Waves Part One Formative 2

Rachel is learning about electromagnetic radiation that comes from the Sun. What types of electromagnetic radiation does the Sun emit?

• gamma rays and ultraviolet radiation

• ultraviolet radiation, only

• infrared, visible, and ultraviolet radiation

• all types of electromagnetic radiation

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Which type of electromagnetic waves have the highest frequency?

• microwaves

• gamma rays

• ultraviolet rays

• radio waves

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How are the components of the electromagnetic spectrum, from radio waves to gamma rays, grouped?

• according to their speed

• according to their velocity

• according to their wavelength

• according to their visibility

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In a vacuum, all electromagnetic waves have the same

• speed

• frequency

• amplitude

• wavelength

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What do all types of electromagnetic waves have in common?

• Their wavelengths are the same in any material.

• They all have the same amplitude in a vacuum.

• They all travel at the same speed in a vacuum.

• Their frequencies vary depending on material.

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A scientist is designing a device that will kill harmful cells in the human body using high-energy waves. Which type of wave would be most effective in accomplishing this goal?

• X-rays would be the best choice because they have a long wavelength and a low frequency.

• Radio waves would be the best choice because they have a long wavelength and a low frequency.

• Gamma rays would be the best choice because they have a short wavelength and a high frequency.

  Gamma rays would be the best choice because they have a short wavelength and a high frequency.

• Infrared waves would be the best choice because they have a short wavelength and a high frequency.

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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

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Airport security uses electromagnetic waves to see items inside of luggage without having to open the bags. Which type of electromagnetic waves would be best for airport security to use?

• X-rays would be best because they are low-energy waves that can penetrate gases.

• X-rays would be best because they are high-energy waves that can penetrate solids.

• Radar waves would be best because they are low-energy waves that can penetrate gases.

• Radar waves would be best because they are high-energy waves that can penetrate solids.

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A student is instructed to design a device that can allow one user to hear the voice of another user at a distance of 5 kilometers. Which statement describes the MOST applicable basic design concept?

Responses

• A device designed to create a strong magnetic field should be developed.

• A device designed to turn an electric current into heat should be developed.

• A device designed to produce waves with large amplitudes should be developed.

• A device designed to transmit electromagnetic waves through the air should be developed.

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Which electromagnetic waves are produced during some nuclear reactions?

• gamma rays

• ultraviolet waves

• microwaves

• X-rays

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