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5th grade sound energy
forms when a disturbance causes energy to be transferred through matter such as air or water
a rapid back-and-forth movement of an object
how high or low you perceive the sound to be
how loud or soft a sound is
A sound with ________ frequency has _______ pitch.
low frequency has low pitch
A sound with high _________ has _________ pitch.
high frequency high pitch
The number of vibrations per second of the sound.
How high or low you perceive a sound to be
A form of energy that is produced by vibrations of an object.
The loudness of a sound.
Describe three ways instruments produce sound?
A reed vibrates when you blow into it, hit a drum, plucks strings
How do sound waves travel
They move in all directions from an object that makes a sound.
How do they measure sound?
In decibels (dB)
How does a bat fly at night?
The bats can produce sound that hits objects and bounces back in the form of a echo. The echo's help give information about the surroundings.
How does a woodwind instrument create sound?
Through a thin piece of wood called a reed.
How does sound travel?
In the form of compressed waves
Sound is a form of energy that travels through ___________?
Sound travels faster in a __________ and a _____________ than it does in a gas.
solid and liquid
The speed of the sounds depends on what?
The type of medium which it's moving through.
What absorbs more sound a soft object or a hard object?
A soft object.
What happens when sound waves hit something?
Some of the energy is absorbed, some is reflected
What has higher frequency a tuba or a trumpet?
What is the difference between sound waves and light waves?
Sound waves travel in compressions in matter, but light does not compress matter.
in sound, this determines how loud the sound is
the areas where the particles of a longitudinal wave are compressed "bunch up"
the units we use to measure how loud the sound is
the number of waves in a certain period of time
the units we use to measure frequency
particles move perpendicular to the direction of the wave
waves that have to have a medium - they can't travel through empty space
any matter that waves travel through
how high or low the sound is
the areas where the particles of a longitudinal wave are sparse
the bouncing back of a sound wave after it hit a surface
energy that comes from vibrating particles
small, rapid (quick) back and forth movement
disturbance that carries energy through matter or through empty space
how fast the wave travels
the space from the middle of one compression to the middle of the compression next door to it
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