Physical Science Ch. 15

Which is a repeating disturbance that transfers energy through matter or open space?

• wave

• medium

• frequency

• conductor

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which statement is most accurate?

• Diffraction helps you see into a room around a corner.

• Refraction helps you see into a room around a corner.

• Diffraction helps you hear sounds from a room around a corner.

• Refraction helps you hear sounds from a room around a corner.

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NGSS.MS-PS4-2

Which label shows the wavelength of this wave?

• 1

• 2

• 3

• 4

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NGSS.MS-PS4-1

The speed of sound in air is 350 m/s. What is the wavelength of a pure A note, at 440 Hz, in a concert hall?

• 0.80 m

• 0.85 m

• 0.90 m

• 0.95 m

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NGSS.HS-PS4-1

When you hear a pure A note, at 440 Hz, how many wavelengths enter your ear per second?

• 110

• 220

• 440

• 880

How are these two waves different?

• The amplitude of Wave 2 is twice the amplitude of Wave 1.

• The wavelength of Wave 2 is twice the wavelength of Wave 1.

• The wave speed of Wave 2 is twice the wave speed of Wave 1.

• The frequency of Wave 2 is twice the frequency of Wave 1.

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NGSS.MS-PS4-1

Why can't sound waves travel through outer space?

• They are electromagnetic waves.

• The gas molecules in outer space air are too far apart.

• They are mechanical waves.

• They cannot travel through a medium.

Which best describes the relationship between waves and matter?

• All waves require matter in order to transfer energy.

• Mechanical waves require matter to transfer energy, but electromagnetic waves do not.

• Electromagnetic waves require matter to transfer energy, but mechanical waves do not.

• All waves transfer matter using energy.

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NGSS.MS-PS4-2

Which occurs when the crest of one wave overlaps the crest of another wave?

• destructive interference

• constructive interference

• wave cancellation

• amplitude shift interference

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NGSS.MS-PS4-1

Which occurs when the crest of one wave overlaps the trough of another wave?

• constructive interference

• wave cancellation

• amplitude shift interference

• destructive interference

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NGSS.MS-PS4-1