Amplify Waves

Sound waves are _______________

• Transverse waves

• Longitudinal waves

• Circular waves

• Seismic waves

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NGSS.HS-PS4-1

Which wave in the diagram has the greatest frequency?

• 1

• 2

• 3

• 4

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NGSS.HS-PS4-1

These graphs show the wavelength and amplitude of light coming from three lasers. Could any of these lasers be giving off a different type of light?

• Yes. Laser 2 could be giving off a different type of light because Laser 2 has a different wavelength than Lasers 1 and 3.

• Yes. Laser 3 could be giving off a different type of light because Laser 3 has a different amplitude than Lasers 1 and 2.

• Yes. All three lasers must be giving off different types of light because every light source gives off its own type of light.

• No. All three lasers must be giving off the same type of light because all three are lasers, and the same kind of light source gives off the same type of light.

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NGSS.HS-PS4-1

What is the primary purpose of amplifying waves in scientific experiments?

• To increase the frequency of the waves

• To increase the amplitude of the waves

• To decrease the wavelength of the waves

• To change the wave's phase

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NGSS.HS-PS4-5

Which device is commonly used to amplify sound waves in audio equipment?

• Microphone

• Speaker

• Amplifier

• Transducer

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NGSS.HS-PS4-1

NGSS.HS-PS4-5

In the context of wave amplification, what does the term 'gain' refer to?

• The speed of the wave

• The increase in amplitude

• The frequency of the wave

• The wavelength of the wave

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NGSS.HS-PS4-5

Which of the following is a real-world application of wave amplification?

• Reducing noise in a signal

• Enhancing radio signals for broadcasting

• Decreasing the speed of light

• Changing the color of light

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NGSS.HS-PS4-5

What is the role of a transistor in an electronic amplifier circuit?

• To store electrical energy

• To amplify electrical signals

• To convert AC to DC

• To measure electrical resistance

In wave amplification, what is the significance of the decibel (dB) scale?

• It measures the frequency of the wave

• It measures the amplitude of the wave

• It measures the power gain of the amplifier

• It measures the speed of the wave

Which scientific principle is primarily used in the amplification of electromagnetic waves?

• Ohm's Law

• Faraday's Law of Induction

• Bernoulli's Principle

• Heisenberg's Uncertainty Principle

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NGSS.HS-PS4-3

NGSS.HS-PS4-5