Sound Review

Which would affect pitch?

• changing the volume of a string

• changing the length of a string

• changing the color of a string

• changing the brightness of a string

Answer explanation

Pitch is how high or low a sound is. You can alter pitch by changing the length, tension, or thickness of a vibrating material.

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A rapid back and forth movement?

• Echo

• Vibration

• Pitch

• Amplitude

Answer explanation

Quick back and forth motions called vibrations cause sound.

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How LOUD or quiet a sound is...

• Pitch

• Fequency

• Volume

• Echo

Answer explanation

Volume is how loud or soft a sound is. When you want to turn up a song on the radio, you turn up the volume.

Tags

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Energy that you can hear? 

• Sound

• Light 

• Heat 

• pitch

Answer explanation

Sound is energy we can hear.

Tags

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Loud and soft best describe which property of sound?

• volume

• pitch

• length

• tension

Answer explanation

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Your friend beats a drum. You hit the same drum, but with less force. How will the decreased force affect the sound produced?

• The pitch of the sound will be higher

• The pitch of the sound will be lower

• The volume of the sound will increase

• The volume of the sound will decrease

Tags

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If you tighten the strings on a guitar the strings will vibrate...

• slower, producing a lower pitch.

• faster, producing a lower pitch.

• slower, producing a higher pitch.

• faster, producing a higher pitch.

Answer explanation

Increasing tension, or making vibrating strings tighter, will cause the strings to vibrate faster, thus creating a higher pitch.

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Which is true about vibrating strings?

• Thicker strings vibrate faster than thinner ones.

• Thinner strings vibrate faster than thick ones.

• Thick and thin strings vibrate at the same speed.

• The thickness of strings does not impact vibrations.

Answer explanation

Thick materials vibrate more slowly producing a lower pitch.

Thin materials vibrate faster producing a higher pitch.

Tags

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Rahul is playing the drums in a concert. People in the back want him to play even louder! What does Rahul need to do?

• Hit the drums more slowly but with the same force

• Hit the drums faster but with the same force

• Hit the drums with more force

• Hit the drums with less force

Answer explanation

More force = louder

Less force = quieter

Tags

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Why does the top and bottom string of a guitar have different pitches?

• They are different lengths

• They are different colors

• They have different thickness

• One of them does not vibrate

Answer explanation

Thicker materials vibrate more slowly producing a lower pitch.