WAVE MOTION
ADD AND SUBTRACT
I CAN'T HEAR YOU
WHAT??
Potpourri
100
The frequency of an object that is allowed to oscillate freely.
What is NATURAL FREQUENCY?
100
A powerful compression wave, usually produced by an explosion or by the motion of a supersonic body moving thru a medium
What is SONIC BOOM?
100
The unit for measuring sound intensity.
What is the DECIBEL?
100
A device that increases the power of an acoustic signal.
What is an AMPLIFIER?
100
The study of electric charges at rest.
What is STATIC ELECTRICITY?
200
The maximum displacement of a wave from its equilibrium position.
What is AMPLITUDE?
200
The principle that multiple waves passing thru a medium at a point can be expressed as the sum of all waves involved.
What is the PRINCIPLE of SUPERPOSITION?
200
The lower limit for human hearing.
What is 20 Hz?
200
Points on a standing wave where maximum vibration occurs.
What is an ANTINODE?
200
A material through which electric charge may move easily.
What is a CONDUCTOR?
300
The area where the particles of a medium are more densely packed (closer together) in a wave.
What is a COMPRESSION?
300
Interference in which multiple waves combine and have a greater amplitude.
What is CONSTRUCTIVE INTERFERENCE?
300
The upper limit for human hearing.
What is 20,000 Hz?
300
Wave frequencies that are below the threshold of human hearing.
What is SUBSONIC?
300
An electric circuit in which the current has only one path to follow.
What is a SERIES CIRCUIT?
400
A single swing, such as in a pendulum, from one extreme limit to the other and then back to the starting point.
What is an OSCILLATION?
400
Interference where multiple waves interact to produce a lesser amplitude.
What is DESTRUCTIVE INTERFERENCE?
400
The average rate of sound energy transmitted thru an area due the to the transmission of sound.
What is INTENSITY?
400
Points on a standing wave where no vibration occurs.
What is a NODE?
400
A material through which electrical charge moves poorly or not at all.
What is an INSULATOR?
500
In physics, the study of sound.
What is ACOUSTICS?
500
A disturbance that transfers energy through a medium without creating net motion in the medium.
What is a WAVE?
500
The increase or decrease in frequency of a sound heard by an observer due to the motion of the listener or the motion of the sound source.
What is THE DOPPLER EFFECT?
500
When energy is fed to an object at that object's natural frequency. (think about the Tacoma Narrows Bridge).
What is RESONANCE?
500
An electric circuit in which the current has multiple paths to follow.
What is a PARALLEL CIRCUIT?
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