Sound 1
_____________describes how high or low a sound is.
pitch
A back and forth movement that causes sound is called a ____________________.
vibration
A sound wave is a kind of________________.
Compression wave.
Which part of the ear collects sound waves?
outer ear
Hitting a drum harder will make the sound__________
louder.
Sound waves travel fastest through___________.
solids.
A special nerve inside the head carries messages from the ear to the____________________.
brain
If a guitar string vibrates slowly it will have a pitch that is________.
soft.
Which instrument is a percussion instrument?
a.) harp b.) clarinet c.) trumpet d.) cymbal
d.) cymbal
Would a jet plane sound be annoying or harmful?
harmful
Would a lawn mower sound be annoying or harmful?
annoying
Suppose you place a rubber band around a book. You place two pencils under the rubber band to hold it up. Then you pluck the rubber band between the pencils. Predict how the pitch of the sound will change when the pencils are moved closer together and then farther apart.
Short, thin, and tight strings makes faster vibrations. So the sounds they make have higher pitches. Longer strings would have lower pitches.
Why does sound travel more slowly through air than it does through water?
The particles in gases are farther apart than in liquids and solids.
Explain how an oboe makes musical sounds.
The player blows on the reeds, making them vibrate. This vibration makes the air inside vibrate and make a sound.
Explain how people make sounds when they talk.
You are able to make sounds because your vocal cords vibrate.
Explain how covering your ears can keep you from hearing a sound.
Your ear will not be able to collect sound waves.
How can harp strings with different lengths make music that has different sounds?
Short strings have higher pitches, longer strings have lower pitches.
What path do sound waves follow through the ear?
Outer ear collects sound waves, sound waves hit eardrum and begins to vibrate. Little bones vibrate and makes tiny hairs in inner ear vibrate that carries signals to the brain.
How do some insects make sounds?
By rubbing body parts together, like wings and beaks.
How does sound travel?
Sound travels through matter.
How is sound made.
Sound happens only when something vibrates.
What makes vocal cords vibrate?
They vibrate as air passes between them.
How does sound travel?
Compression wave.
Why does sound travel quickest through solids?
Particles in solids are closer together. It doesn't take long for a particle to hit another and move the sound energy along.
During which season does sound travel most quickly through the air?
summer