Sound 1
Sound needs _____ to travel
Vibrations
False
How many times an object vibrates per second is called:
Frequency
True or False: There must be a medium for sound to travel.
True
When we speak these vibrate.
Vocal cords
Sound travels slowest through ___________
Gases
How sounds travel from one location to another.
sound waves
Sound travels fastest through _____________
Solids
A drum has _________ pitch.
Low
In which direction does sound move?
All over
Something (particles) that sound can travel through.
Medium
If sound is created by an object, then the object must also be able to create _____.
Vibrations
What absorbs sound?
Soft spongy like surfaces
What does VPS stand for?
Vibrations Per Second
The unit to measure the level of sound
Decibal
A high pitch sound has which type of vibrations?
Fast vibrations
Tara plucks the thinnest strings on a guitar. What happens to the pitch when she creates vibrations on the thinnest string?
High pitch
When a person pushes down on a string and makes the string shorter an its original length, the pitch will sound ___ than the original string.
higher
The bigger the frequency, the _____ pitch
Higher
Soft and loud describes
Volume
What is one way to change the pitch on a guitar?
-Tighten the strings
-Shorten the string
A reflected sound wave (a sound wave that hits a surface and bounces back to the listener) can also be called:
An echo
The three types of matter
Solid, Liquid, Gas
What travels faster sound or light?
Light
High and low describes
Pitch