On a xylophone, the shortest bar creates what type of pitch?
High pitch
100
What are the 3 main parts of the ear?
Outer ear, Middle ear, Inner ear
100
What characteristics do unpleasant sound have?
Hard, rough, annoying, repetitive, etc.
100
How is bat hearing different from human hearing?
Bats send out high pitched noises that are reflected off of pray and sent back to the bat so that it knows its location. This pitch is too loud for humans to hear.
100
What state of matter does sound travel through best?
Solid state because the molecules are close together.
200
Describe what a low pitch wave looks like.
Slow, crests are far apart
200
If you want your friends to hear you better from far away, what could you do to make your voice louder?
Use some sort of funnel to direct the sound, cup your hands around your mouth, use a megaphone, etc.
200
True or False: Sound only travels in one direction.
False - Sound travels in all directions.
200
How is snake hearing different from human hearing?
Snakes feel the sound vibrations in their jaw and the vibrations are sent to their brains and translated into sound.
200
How is sound created?
Through vibrations
300
What is the difference between pitch and volume?
Pitch is how fast the sound is vibrating or how high and low a sound is.
Volume is how far a sound travels or how soft and loud a sound is.
300
Which parts of the ear do the sound waves vibrate?
Ear drum and ossicle bones (hammer, anvil and stirrup)
300
What are some characteristics of pleasant sounds?
Soft, relaxing, smooth, calming, etc.
300
How is dolphin hearing different from human hearing?
Dolphins use sonar to tell the location of things. Dolphins do not have ears on the outside of their bodies. Instead sound vibrations are sensed in their skull and then sent to an inner ear.
300
Make a sound, but you can't use your voice.
.
400
When playing a drum, how would you create a louder sound?
Hit it harder
400
If you want to sound proof a room, what could you do?
Put up things that absorb sound, like curtains, carpet, insulation, etc.
400
True or False: Continued exposure to loud noises can damage your hearing.
True
400
Name an animal that can hear better than a human.
Snakes, dogs, dolphins, bats, owls
400
What is a does a phone ringing communicate to you?
Answer the phone.
500
What unit of measure is used to measure the volume of different sounds?
Decibels (dB)
500
If you need to create your own noise cancelling headphones, what materials would you use to block out sound?
Cotton, styrofoam, cloth, sawdust, etc.
500
What can you do to protect your ears from hearing loss?
Wear earplugs around loud noises, turn down the volume, limit your exposure to loud noises, etc.
500
How is owl hearing different from human hearing?
Owls have ears that are on the side of their head, but covered by feathers. Their ears are not symmetrical and and so their ear canals are different shapes on both sides of their heads. This can help them to hear better and hear sounds that are very quiet and very far away.
500
Does sound travel better through metal or through water?