Wavelength/Amplitude and Informational Technologies VRE Review

Boom! Boom! Boom! The car passed Steve's house and the blaring music from the car's radio rattled the windows. How would a scientist explain this to Steve?

• Sound waves reflected off the windows of the house.

• Sound waves transmit air particles that bounce off of the windows.

• Sound energy travelled as waves and caused the windows to vibrate.

• Sound energy travelled as particles and vibrated the window glass.

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NGSS.MS-PS4-2

Identify the distance labeled from A to B. Explain what could be done to the note played on an instrument to change the distance.

• From A to B is know as the wavelength and changing the pitch of the note will change its length.

• From A to B is known as the amplitude and changing the loudness of the note will change its length.

• From A to B is known as the wavelength and changing the amplitude of the note will change its length.

• From A to B is known as the wave height and changing the amplitude of the note will change its length.

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NGSS.MS-PS4-1

When you talk on a cell phone, as you speak the cell phone converts sound waves from your mouth into digital signals for what purpose?

• It extends the life of the cell phone battery.

• It prevents other conversations from being heard.

• It allows sounds to be transmitted long distances.

• It prevents wind and other elements from scattering sound.

Mary played two sounds on her flute. The first sound she blew gently. For the second sound she blew with more force. Based on the evidence provided, explain what you hear.

• The second flute sound is louder than the first.

• The first flute sound has a higher pitch than the second.

• The two flute sounds are the same because they are the same note.

• The second flute sound has a lower pitch and is louder than the first sound.

Tags

NGSS.MS-PS4-1

What is the system of communication that involves an alphabet in which letters are represented by combinations of long and short signals of light or sound?

• Email

• Morse code

• Binary code

• Digital Signal Reception

What is the system of communication that involves text or computer processor instructions using the two digits, 0 and 1? The code assigns a bit string to each symbol or instruction written.

• Email

• Morse code

• Binary code

• Digital Signal Reception

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NGSS.MS-PS4-3

The blue line shows

• amplitude

• wavelength

• crest

• trough

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NGSS.MS-PS4-1

The red line shows

• amplitude

• wavelength

• crest

• trough

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NGSS.MS-PS4-1

The top of the wave is called the

• amplitude

• wavelength

• crest

• trough

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NGSS.MS-PS4-1

The bottom of the wave is called the

• amplitude

• wavelength

• crest

• trough