Amplify Waves, Energy and Information

What is the amplitude of the wave?

• The amplitude is 5 feet.

• The wavelength is 8 feet.

• The amplitude is 3 feet.

• The wavelength is 5 feet.

Tags

NGSS.MS-PS4-1

Maria is at a piano concert with her sister. Which of the following best describes the movement of energy at the concert as soon as the concert begins?

• Sound energy moves from the piano to Maria’s ears.

• Sound energy moves from Maria’s ears to the piano.

• Sound energy moves from the piano to Maria’s ears, and then directly to her sister’s ears.

• Sound energy moves from the piano to Maria’s brain.

Tags

NGSS.MS-PS4-1

A fishing business manager opens the wave report for today. She creates a sketch to identify the different parts of a wave. She needs to know the amplitude and wavelength of each wave.

What is the missing term for Box A?

• Wavelength

• Amplitude

Tags

NGSS.MS-PS4-1

Which of the following best describes how a microphone amplifies sound waves?

• A) It converts sound waves into electrical signals and increases their amplitude.

• B) It directly increases the frequency of sound waves.

• C) It reflects sound waves to make them louder.

• D) It decreases the wavelength of sound waves.

What is the primary function of an amplifier in an electronic circuit?

• A) To increase the voltage, current, or power of a signal.

• B) To decrease the noise in a signal.

• C) To convert AC to DC.

• D) To store electrical energy.

In the context of wave energy, what does the term 'amplitude' refer to?

• A) The distance between two consecutive crests.

• B) The height of the wave from the rest position.

• C) The number of waves passing a point per second.

• D) The speed at which the wave travels.

Tags

NGSS.MS-PS4-1

Which of the following devices is used to amplify radio signals?

• A) Transistor

• B) Capacitor

• C) Resistor

• D) Inductor

Tags

NGSS.HS-PS4-3

How does increasing the amplitude of a wave affect its energy?

• A) It increases the energy of the wave.

• B) It decreases the energy of the wave.

• C) It has no effect on the energy of the wave.

• D) It changes the frequency of the wave.

Tags

NGSS.MS-PS4-1

Which of the following is an example of information being amplified?

• A) A loudspeaker increasing the volume of a voice.

• B) A mirror reflecting light.

• C) A lens focusing light.

• D) A filter removing noise from a signal.

Tags

NGSS.MS-PS4-1

What is the role of a transformer in an electrical circuit?

• A) To amplify electrical signals.

• B) To change the voltage of an electrical supply.

• C) To store electrical energy.

• D) To convert electrical energy into mechanical energy.