Lessons 16-17 (pages 118-130)

Recall the relationships among wavelengths, frequency, and energy. Which color of visible light transmits the most energy? (picture found on page 120)

• Violet

• Green

• Yellow

• Red

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NGSS.MS-PS4-1

How do electromagnetic waves differ from mechanical waves?

• Mechanical waves have crests and troughs, but electromagnetic waves do not.

• Mechanical waves need a medium through which to travel, but electromagnetic waves do not.

• Electromagnetic waves come in many types, but mechanical waves are all the same.

• Electromagnetic waves carry energy, while mechanical waves carry matter.

Which of the waves transmits the least energy? (picture found on page 123)

• gamma rays

• X-rays

• ultraviolet light

• visible light

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NGSS.MS-PS4-1

A scientist exposes a sample of the mineral fluorite to EM waves, causing the fluorite to glow. Which kind of EM wave did the scientist use?

• visible light

• radio waves

• ultraviolet light

• microwaves

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NGSS.MS-PS4-2

Both gamma rays and X-rays

• can be seen by humans

• can harm living cells

• are commonly used for communication

• require matter in order to transmit energy

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NGSS.HS-PS4-4

Which kinds of EM waves are you most likely to experience while sitting at a campfire?

• microwaves and infrared light

• infrared light and visible light

• visible light and ultraviolet light

• ultraviolet light and X-rays

These waves are longitudinal.

• electromagnetic waves

• sound waves

• both electromagnetic waves and sound waves

These waves require a medium to travel through.

• electromagnetic waves

• sound waves

• both electromagnetic waves and sound waves

Wavelength is a characteristic of these waves.

• electromagnetic waves

• sound waves

• both electromagnetic waves and sound waves

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NGSS.HS-PS4-1

These waves carry energy.

• electromagnetic waves

• sound waves

• both electromagnetic waves and sound waves

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NGSS.MS-PS4-1