What is frequency?
The number of times an object vibrates per second.
What is amplitude?
The height of sound waves. (or: The air density within compressions and rarefactions vs outside of them)
What is "sound navigation and ranging" commonly called? How does it work?
Sonar; sound wave emission + timing device to determine object locations.
What is volume and how is it measured?
The loudness of sound; decibels.
How can we make sounds louder?
Using more energy (increasing the density of the particles in the compressions and decreasing it in the rarefactions).
A classmate says that higher pitch music notes are irritating because they vibrate in your ear faster. Which part of that statement is fact and which is opinion?
Irritating= opinion; vibration speed= fact.
What is echolocation?
Sound waves emitted by animals, such as bats, that bounce off objects and tell the animal their location.
How does changing the medium of a sound change its amplitude?
The denser the medium, the less the amplitude and vice versa.
What is the Doppler Effect?
A change in frequency due to moving toward or away from a sound wave.
What is pitch?
How high or low a sound is.