Properties of Waves
Sound waves with high amplitude make a ______________ sound.
What is loud?
Sound travels in ____________ directions.
What is all directions?
The repetition of a sound caused by its waves bouncing off a surface is called ______________.
What is an echo?
It catches the sound waves and funnels them inward to the eardrum.
What is the outer ear?
Out of solids, water and gas, sound travels fastest through ________ because it is the densest.
What are solids?
The two types of waves.
What are transverse and longitudinal?
Two properties of sound.
What are pitch and intensity (volume)?
A method of finding something or communicating by producing a sound, which bounces and creates an echo.
What is echolocation?
The sound waves make your ________ vibrate.
What is the eardrum?
Out of the bass and the violin, this instrument has the higher pitch.
What is the violin?
When the wave peaks are close together, the sound has a _____________ pitch.
What is high?
Sound can travel through these three materials.
What are solids, liquids and gases?
A measure of how loud or soft a sound is.
What is intensity?
Bones pass vibration to a snail-shaped organ in the inner ear called ____________.
What is the cochlea?
Before electronic hearing aids, this shaped object was used because it collects the sound waves of a large area, concentrates them, and directs them to the ear.
What is a cone?
The number of waves that pass in a second.
What is frequency?
The unit most often used to measure the intensity of a sound.
What is a decibel (dB)?
Stops sound waves from reflecting or traveling any farther.
What is absorption?
_______ coats the outer ear canal and protects the inner ear, keeps the ear clean and prevents infection.
What is earwax?
It is easier for aircrafts to break the speed of sound than vehicles on land because the air at very high altitudes is ________ dense, meaning the sound travels slower.
What is less dense?
The distance from the top of one wave to the top of the next wave.
What is wavelength?
The passing of sound waves through a material.
What is transmission?
Unlike sound conductors, which vibrate easily and carry sound well, these sound _______ do the opposite and muffle sound.
What are insulators?
Nerve signals from cochlea travel along another nerve to your ______________, where it is interpreted as sound.
What is brain?
A musical instrument has 5 strings. The thickest string is on the left, and the strings get thinner to the right. The string on the ______ will produce the lowest note.
What is the left?