SLHS 2010 Exam 2 Study Guid

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Last updated 3:39 PM on 3/18/25
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25 Terms

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Sound
A vibration that travels through a medium (air, water, solids) in the form of pressure waves.
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Simple Harmonic Motion (SHM)
A repetitive movement back and forth through an equilibrium position, such as a pendulum or tuning fork.
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Pendulum
A weight suspended from a pivot that swings back and forth due to gravity and inertia.
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Compression & Rarefaction
Alternating high (compression) and low (rarefaction) pressure areas in a sound wave.
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Inertia
The tendency of an object to resist changes in motion.
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Potential Energy
Stored energy due to position.
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Kinetic Energy
Energy of motion.
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Velocity
Speed with direction.
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Gravity
The force pulling objects toward Earth.
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Elasticity
The ability of an object to return to its original shape.
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Transverse Wave
A wave where particles move perpendicular to the wave direction (e.g., water waves).
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Longitudinal Wave
A wave where particles move parallel to the wave direction (e.g., sound waves).
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Waveform
A graphical representation of a sound wave over time, showing amplitude variations.
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Frequency

The number of cycles per second, measured in Hertz (Hz).

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Period
The time for one complete cycle, calculated as T = 1/Frequency.
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Wavelength
The distance a wave travels in one cycle.
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Decibel (dB)
A logarithmic unit to measure sound intensity.
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Damping
The decrease in amplitude over time due to energy loss.
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Constructive Interference
When waves combine to increase amplitude.
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Destructive Interference
When waves combine to cancel each other.
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Harmonics
Integer multiples of the fundamental frequency of a wave.
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Resonance
An object vibrating at its preferred frequency with increased amplitude.
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Open Tube Resonance
Occurs at wavelengths where the tube length is half the wavelength.
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Nodes & Antinodes
Nodes are points of no displacement; Antinodes are points of maximum displacement.
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Standing Waves
Waves that remain stationary due to interference.