Vocabulary
A sound bouncing back and returning to its source.
Echo
What are sounds too high pitched for human ears called?
Ultrasound
Name 2 things that make a low amplitude sound.
Mice and whispers are both low amplitude (low volume) sounds.
Which state of matter does sound generally travel through the best?
Solids
What is the difference between Mach 1, Mach 2, and Mach 3?
Mach 1 is the speed of sound (in air) at 760 mph.
Mach 2 is twice the speed of sound and Mach 3 is three times the speed of sound.
What is the speed of sound?
Mach 1- 760 mph (in air)
What are sounds too low pitched for human ears called?
Infrasound
Name 2 things that make a high amplitude sound.
Examples include a Jet Plane, a Lion's roar, a rock concert, or anything really LOUD.
What sort of frequency do high pitched sound waves have?
They have a HIGH frequency.
How can sound help people (other than the obvious communication)?
What is the speed of anything traveling faster than the speed of sound?
What measurement is used to measure frequency (pitch)?
Hertz is used to measure frequency.
What measurement do we use to measure loudness.
Decibels is used to measure loudness.
What sort of amplitude do quiet sounds have?
Quiet sounds have low amplitude.
Is sound energy? Why or why not.
Yes, sound is one of the 7 forms of energy (NCMELTS) because sound is the movement of molecules.
Bioacoustics
Define frequency.
Frequency is how often a sound wave goes up and down.
Define Amplitude.
Amplitude is the height of the wave.
What do we call a system that uses high-frequency ultrasonic waves?
Sonar
Name something that has both a high frequency and a high amplitude.
A child screaming could have both high frequency (pitch) and a high amplitude (loudness).
A sound's quality is known as....
Timbre
What property of sound does frequency determine?
Frequency determines how high pitch or low pitched a sound is.
What property of sound does amplitude determine?
Amplitude determines how loud or quiet a sound is, also called VOLUME.
How can animals like elephants communicate over long distances?
Elephants can feel vibrations in their feet that communicate over long distances and send message to their ears and brain.
Name something that has a low frequency but a high amplitude.