# Quiz # 2 For Acoustics

15 Preguntes | Total Attempts: 252

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OBJECTIVES OBJECTIVES OBJECTIVES OBJECTIVES OBJECTIVES

• 1.
______ – physical phenomenon of vibrations that set the molecules into motion through longitudinal waves of compression and rarefaction as it propagated through molecular  structure such as solid, liquid and gas.
• A.

Sound

• B.

Sound wave

• C.

Longitudinal wave

• D.

Elasticity

• E.

Compression

• 2.
___________ – is the motion of molecules as they propagated through molecular structure.
• A.

Sound wave

• B.

Longitudinal wave

• C.

Elasticity

• D.

Compression

• E.

Sound frequency Spectrum

• 3.
_________ – is the phenomenon in which a molecule in motion will return to its original position after its momentum from another molecule.
• A.

Elasticity

• B.

Sound frequency Spectrum

• C.

Compression

• D.

Longitudinal wave

• E.

Sound frequency Spectrum

• 4.
__________- happens when a vibrating object move forward causing the molecules increase its pressure and decrease its velocity.
• A.

Compression

• B.

Refraction

• C.

Frequency

• D.

Abstraction

• E.

Synopsis

• 5.
________- happens when a vibrating object moves inward causing the molecules to decrease its pressure and its velocity.
• A.

Refraction

• B.

Reflection

• C.

Reduction

• D.

Diffraction

• E.

NOTA

• 6.
___________ - The number of cycle that a vibration completes in one second
• A.

Frequency

• B.

Wavelength

• C.

Lambda

• D.

Pitch

• E.

Beat

• 7.
___________- frequency below 20Hz- 20 kHz
• A.

Infrasonic

• B.

Ultrasonic

• C.

Megasonic

• D.

Supersonic

• E.

Sonic

• 8.
_______ - is the relative tonal highness or lowness of sound
• A.

Pitch

• B.

Degree

• C.

Sound

• D.

Music

• E.

Screech

• 9.
_________ – is the range of audible sound
• A.

Sound frequency Spectrum

• B.

Frequency spectrum

• C.

Spectral Spectrum

• D.

Sound System

• E.

Harmonics

• 10.
_______ - is interval between any two frequencies that have a tonal ratio of 2  to 1.
• A.

Octave

• B.

• C.

Octagon

• D.

Octavo

• E.

Octennial

• 11.
________________      1st octave (20 to 40 Hz)          2nd octave (40 to 80Hz)
• A.

Low Bass

• B.

Upper Bass

• C.

MidRange

• 12.
________        3rd octave (80 to 160 Hz)          4th octave (160 Hz to 320Hz)
• A.

Upper Bass

• B.

Low Bass

• C.

MidRange

• 13.
________        5th octave (320Hz – 64o Hz)         6th octave (640 to 1280Hz)         7th octave (1280 – 2560Hz)
• A.

MidRange

• B.

Low Bass

• C.

Upper Bass

• 14.
_________ – exact multiple of fundamental
• A.

Harmonics

• B.

Overtones

• C.

Pure tone

• D.

Upper Midrange

• E.

Treble

• 15.
______ – pitches that are not exact multiples of fundamental frequency
• A.

Overtones

• B.

Pure tone

• C.

Harmonics

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