OK ch26rev_QAs - Ch 26 Chapter Review Q & As Q: What is...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Ch 26 Chapter Review Q & A’s Q: What is the source of all sounds? A: vibrating objects Q: How does pitch relate to frequency? A: Pitch is subjective, but it increases as frequency increases Q: What is the average frequency range of a young person’s hearing? A: 20 Hz – 20,000 Hz Q: Distinguish between infrasonic and ultrasonic sound. A: Infrasonic – below 20 Hz and ultrasonic – above 20,000 Hz Q: Distinguish between compressions and rarefactions of a sound wave A: Compressions are regions of high pressure & rarefactions are regions of low pressure Q: How are compressions and rarefactions produced? A: Compressions & rarefactions are produced by a vibrating source. Q: What evidence can you cite to support the statement: Light can travel in a vacuum. A: you can see the sun or the moon Q: Can sound travel through a vacuum? A: No, sound needs a medium to travel
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Q: How does air temperature affect the speed of sound? A: Sound travels faster at higher temperatures. Q: How does the speed of sound in air compare with its speed in water & in steel? A: Sound travels faster in water & faster again in steel Q: Why does sound travel faster in solids an dliquids than in gases? A: The atoms are closer together, & solids and liquids are more elastic mediums Q: Why is sound louder when a vibrating source is held to a sounding board? A: More surface is forced to vibrate and push more air. Q: Why do different objects make different sounds when dropped on a floor? A:
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 6

OK ch26rev_QAs - Ch 26 Chapter Review Q & As Q: What is...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online