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All About Sound!

Test Description: Answer the questions regarding sound to the best of your ability

Instructions: Answer all questions to get your test result.

1) What is not true of a mechanical wave?

ATransfer of energy through the medium (result of particle collision) is present BSound is the only type of mechanical wave CThere are two types of mechanical waves DWave propagation through a material medium (solid, liquid, gas)

2) What is an example of a longitudinal wave?

AHand wave BSound wave CSeismic wave DOcean wave

3) A string produces sound when:

AVibration of the string creates a sound particle, which emits a pitch BDisturbance of string creates echoes heard as pitches CVibration of the string creates a fundamental frequency, which emits a pitch DDisturbance of string produces energy which is emitted as sound

4) Which is not true of a resonant frequency?

AMust be the lowest possible frequency at which a string could vibrate to form a standing wave BNatural frequency determined by the physical properties of an object CVibrates in a manner such that a standing wave pattern is formed within the object DAll true

5) What causes sound in wind instruments?

ARefraction of sound blown into the wind pipes and into air BStanding waves that travel in the air pipes from nodes on open ends to antinodes on closed ends CStanding waves that travel in the air pipes from nodes on closed ends to anti nodes on open ends DReflection of sound blown into the wind pipes and into air

6) The principle of superposition states:

ASound travels in wave form BThe combined waveform of interfering waves equals the sum of displacements of individual waves CWavelength is inversely propotional to frequency DSound waves travel at incredibly high velocities

7) What allows us to distinguish the same note on different instruments?

ATimbre BFundamental frequencies CDifferent sound particles DSlight pitch difference

8) What is not a factor in determining pitch from a string instrument?

AThickness of string BLength of string CPlucking string v bowing on string DMode of vibration

9) What is NEVER true of a wave?

ACan be a regular rhythmic disturbance either of a medium and moving through that medium BWavelength is proportional to frequency CTransfer of energy between particles (the result of particle collision) DCan be some quantity with different values at different points in space and moving through space

10) What is unique of a fundamental frequency?

AIs the only frequency that can be heard by the human ear BIt is the lowest possible frequency at which a string could vibrate to form a standing wave pattern CIt is the lowest possible frequency at which a string could vibrate to form a longitudinal wave DIt is present in only longitudinal waves

*select an answer for all questions

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