Chapter 17-19

The figure shows an electromagnetic wave and a wave in a rope. Which characteristics do these two waves have in common?

• They are both transverse waves

• They are both longitudinal waves

• They both have electric and magnetic fields.

• They both have compressions and rarefactions

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How do these waves differ?

• One has crests, while the other has troughs.

• One can travel through empty space, while the other cannot.

• One transmits energy, while the other transmits matter.

• One has an electric field, while the other has a magnetic field

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Which forms an electromagnetic wave when it vibrates?

• An electron

• A carrier wave 

•   A photon

• An X-ray

Which shows the correct order from lowest to highest energy for different electromagnetic waves?

• Light – X-ray – microwave

• Gamma ray – light – radio wave

• X-ray – microwave – ultraviolet wave

• Radio wave – microwave – gamma ray

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The figure lists different colors of light. Based on the sequence shown, what could the arrow represent?

• increasing energy

• Increasing frequency

• Increasing speed 

• Increasing wavelength

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What do all these colors of light have in common?

• Their energy

• Their frequency

• Their speed

• Their wavelength

The figure shows a carrier wave used to broadcast radio signals. What is modulated in this wave in order to carry information?

• Amplitude

• Crest height

• Frequency

• Loudness

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Which is true of this type of signal wave?

• It can easily pass around obstacles.

• It can be seen with the unaided eye.

• It can travel far by bouncing off particles in the atmosphere.

• It can have wavelengths that are less than a meter long

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Which is the number of satellites needed to calculate the position of a Global Positioning System (GPS) receiver on Earth?

• 2

• 4

• 6

• 8

What happens to an electromagnetic wave as it passes from space to matter?

• It changes frequency

•   It changes wavelength

•   It slows down

•   It speeds up

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