Nature of Sound
Sound is a disturbance that travels through a medium as this.
What is a longitudinal wave?
The changing pitch of a police car's siren as it moves by you is an example of this.
What is the Doppler effect?
A fundamental tone is the lowest natural _________.
What is frequency?
This is the part of the ear that sound waves enter through.
What is the ear canal?
Bats use this to locate food and navigate.
What is echolocation?
When temperature is a factor, sound travels this way at a lower temperature.
What is slowly?
This term refers to how high or low a sound seems to a person.
What is pitch?
This is a set of tones combined in a way that is pleasing to the ear.
What is music?
The ear canal ends at a tightly stretched membrane called this.
What is the eardrum?
Doctors are able to make sonograms though the use of this.
What is ultrasound?
Sound can travel through these mediums (three answers).
What are solids, liquids, and gas?
This can be a factor in determining the loudness of a sound. Hint - it has to do with the energy of the wave.
What is amplitude of the sound wave?
A short string under a certain tension generally produces a sound with a higher this than a long string under the same tension.
What is pitch?
The hammer, anvil, and stirrup are bones that make up this part of your ear.
What is the middle ear?
This is the high end of the range of human hearing.
What is 20,000 hertz?
Sound travels ________ in steel than it does in air.
What is faster?
If two sound waves differ in intensity, the wave that is more intense sounds __________.
What is louder?
Sound that generally has no pleasing patterns is referred to as this.
What is noise?
This is the liquid filled cavity in your inner ear that is shaped like a snail shell.
What is the cochlea?
This is a system that uses reflected sound waves to detect and locate objects underwater.
What is sonar?
When the air particles bounce back and spread out, it is called this.
What is rarefaction?
If a sound source is moving towards you, you will hear this kind of pitch.
What is higher?
In a wind instrument, a short air column produces a higher pitch than this kind of air column.
What is longer?
Extended exposure to loud sounds can damage the hair cells in your cochlea causing them to stop sending signals to this.
What is the brain?
When using sonar, if it takes 3 seconds for the waves to travel to the ocean floor and back, what is the depth of the ocean floor? (Assume the speed is 1,000 m/s.)
What is 1,500 meters?