Benchmark Practice Test

The frequency of sound waves determines the

• amplitude
• energy
• pitch
• volume

Two people hear a dog barking. Willie is 5 meter away. Steve is 20 meters away. Which is MOST likely true?

• The barking sounds louder to Willie.
• The barking sounds louder to Steve.
• The pitch of the barking sounds louder to Willie.
• The bark's pitch sounds higher to Steve.

What might the woman in the picture be saying?

• "Lower the amplitude of your sound wave."
• "Lower the frequency of your sound waves."
• "Increase the frequency of your sound waves."
• "Increase the amplitude of your sound waves."

What is being shown at the top of the sound wave?

•  amplitude
• direction
• trough
• wavelength

Which is true about the sounds in the table?

• A librarian's whisper has the highest pitch.
• Sound waves from the librarian's whisper travels the farthest distance.
• The sound waves from a rock concert has the greatest amplitude.
• The sound waves from the heavy Atlanta traffic has a higher pitch than the sound waves from a normal conversation.

Sound waves travel fastest through

• air
• empty space
• solids
• liquids

A scientist in a sound lab is counting the number of crests of sound waves that pass every second. What is she measuring?

• amplitude
• wave frequency
• wave height
• wavelength

What is the best description of how sound is produced by someone playing a guitar?

• The strings produce transverse waves of energy.
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• When the strings are plucked, air particles vibrate.
• The strings transfer energy from the player's hand.
• The player's fingers cause dust to vibrate across the room.

What happens when a violin's strings are plucked?

• Sound waves move in one direction.
• Sound waves move through a string.
• The plucked string produces sound waves.
• The string absorbs sound waves.

Logan's voice is pitched lower than Kylie's. Based on this fact, which statement is true?

• Kylie speaks at a higher volume than Logan.
• Logan can speak at a higher amplitude than Kylie.
• Kylie speaks at a greater range of frequencies than Logan.
• Logan's vocal cords vibrate at a lower frequency than Kylie's.