sounds all around

vibration made in one second is known as

• frequency

• volume

• sound

• all of the above

I channel sound and direct them to the ear canal. Who am I ?

• ear canal

• eardrum

• external ear

• three tiny ear bones

• none of the above

how many times will the tuning fork vibrate every second when hit ?

• 512 times

• 256 times

• 502 times

• none of the above

device to measure sound waves ?

• stethoscope

• oscilloscope

• microscope

• none of the above

sounds are produced by

• electricity

• vibrations

• none of the above

sounds cannot travel through

• solid

• liquid

• gas

• vacuum

do the tuning fork with shorter prongs have higher or lower frequencies?

• higher

• lower

the method used to measure speed and distance of under water objects is known as

• sonar

• echolocation

• all of the above

• none of the above

sounds reflect better from

• soft materials

• hard materials

• all of the above

• none of the above

the vibration of the air in the ear canal help me to vibrate which part of the ear am I ?

• eardrum

• inner ear

• three tiny earbones

• none of the above