7th grade EM spectrum

Gamma rays have the shortest wavelength of the electromagnetic waves. Which of the following is also true of gamma rays?

• They are visible to humans.

• They have the highest energy.

• They have the lowest frequency.

• They are only emitted by the Sun.

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NGSS.HS-PS4-1

Visible light and ultraviolet (UV) light are both forms of electromagnetic radiation, and waves of each travel at the same speed. Human eyes are unable to see UV light because it is not in the visible range of the electromagnetic spectrum. If the frequency of one UV light wave is twice that of a visible light wave, how will their wavelengths compare?

• The wavelength of the UV light wave will be half that of the visible light wave.

• The wavelength of the UV light wave will be twice that of the visible light wave.

• The wavelength of the UV light wave will be four times that of the visible light wave

• A.The wavelength of the UV light wave will be the same as that of the visible light wave.

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NGSS.HS-PS4-1

Francesca is drawing a picture of the electromagnetic spectrum. She needs to order the types of electromagnetic radiation from the lowest to highest frequency. Which of the following shows the correct order of the electromagnetic spectrum, from lowest to highest frequency?

• A.visible, UV, infrared, X-ray, microwave, radio, gamma

• A.radio, visible, microwave, infrared, UV, X-ray, gamma

• A.gamma, UV, microwave, infrared, radio, X-ray, visible

• A.radio, microwave, infrared, visible, UV, X-ray, gamma

Which type of visible light has the highest energy?

• Red
• Yellow
• Green
• Violet

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NGSS.HS-PS4-1

NGSS.HS-PS4-4

Which type of radiation has a frequency closest to 10⁵?

• Radio
• Infrared
• Ultraviolet
• X-Ray

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NGSS.HS-PS4-1

Which of the following types of radiation has the shortest wavelength and the highest frequency?

• Radio Waves
• Infrared
• Visible
• X-Rays

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NGSS.HS-PS4-1

Which type of radio wave has a larger wavelength?

• FM
• AM

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NGSS.HS-PS4-1

Cell phones and televisions use this type of EM wave.  It has the longest wavelength with the lowest frequency.

• radio wave
• tv wave
• Gamma wave
• ultra violet

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NGSS.HS-PS4-1

NGSS.HS-PS4-5

Which portion of the electromagnetic spectrum includes the range of light that can be detected by the human eye? 

• ultraviolet light
• visible light
• infrared light
• x-rays

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NGSS.HS-PS4-3

NGSS.HS-PS4-4

Which portion of the electromagnetic spectrum includes the range of light that can be detected by the human eye? 

• ultraviolet light
• visible light
• infrared light
• x-rays

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NGSS.HS-PS4-4