WorksheetsConcept Check Chapter 10 Sound with TIMMS
Total questions: 20
Worksheet time: 10mins
The diagram shows an electric bell inside a jar. The electric bell is switched on and a ringing sound is heard. The air is then pumped out of the jar.
What will happen to the sound of the bell when the air is pumped out of the jar?
The sound still can be heard.
The sound can't be heard.
The sound fade out gradually and the bell sound cant be heard completely.
The volume of the sound decrease.
The frequency of the sound fluctuates.
The diagram shows an electric bell inside a jar. The electric bell is switched on and a ringing sound is heard. The air is then pumped out of the jar.
What does this experiment prove? / Apakah yang ingin dibuktikan dalam eksperimen ini?
Sound needs a medium to propagate.
Sound travels fastest through gas.
Electricity can't flow inside a vacuum condition.
Sound needs a matter to travel.
Sound is produce by ........ of an object.
vibration
conduction
spinning
radiation
heating
Sound propagate in form of __________.
wave
heat
molecule
particles
Sound travel fastest in __________.
solid
liquid
gas
plasma
Sound wave propagate very slowly in ................. .
gas
solid
liquid
plasma
Soft and porous surfaces are ............. sound absorbers but........... sound reflector.
good , poor
bad, good
best ,best
poor , good
moderate,
Hard and smooth surfaces are ............. sound absorbers but........... sound reflector.
good , poor
poor, good
best ,best
poor , good
moderate,
The maximum displacement of the wave from its equilibrium position is .............
amplitude
wavelength
frequency
period
The distance between two successive peak of waves is .............
amplitude
wavelength
frequency
period
The number of complete waves generated in 1 second is .............
amplitude
wavelength
frequency
period
......... is the unit of sound frequencies. Its symbol is.......
Hertz, Hz
Hertz, hz
Freq, Fq
Hetrz, f
The time taken to generate one complete wave is .............
amplitude
wavelength
frequency
period
The of ..... sound is determined by the amplitude.
loudness
strength
pitch
noise
The pitch of sound is determined by the ..... .
frequency
period
wavelength
amplitude
The larger the amplitude of the wave is, the .......... is the sound.
louder
higher pitch
slower
noiser
The pitch of a sound will decrease, if the .........................
frequency increase.
frequency decrease.
amplitude increase.
amplitude decrease.
When a source moves towards an observer, the observed frequency of sound will increase. When a source moves
away from an observer, the observed frequency of sound will decrease.
Doppler's Effect
Placebo Effect
Bose-Enstein Effect
Sound-Shifting Effect
Schrödinger Effect
The diagram showed a soundwave emitted by a device. Azman said the sound suddenly increase its pitch. Which waveform diagram will Azman see?
The diagram showed a soundwave emitted by a device. If the loudness of sound is decreased, choose the correct waveform.
