
Quiz 1: Introduction to Sound Waves
Quiz by Mr.MD Showket Hasan
Grade 9
Science
Thailand Core Curriculum
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15 questions
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- Q1What is the primary way a speaker creates sound?By moving the diaphragm back and forth rapidlyBy vibrating air moleculesBy creating windBy transmitting electrical signals30sSC9.E.1
- Q2What scientific term is used to describe the back and forth motion of an object?UndulationOscillationFluctuationVibration30s
- Q3Why does a piece of paper placed on a speaker "dance"?Due to electrical charges in the paperDue to sound waves pushing the paper upwardsBecause the diaphragm is oscillating and bumping into the paperBecause of wind created by the speaker30s
- Q4How do air molecules in front of a speaker behave when sound is produced?They move in circular patternsThey oscillate back and forthThey remain completely stationaryThey travel away from the speaker30s
- Q5How does sound travel from a speaker to your ear?Air molecules travel directly from the speaker to your earOscillations are passed from one group of air molecules to the nextThe speaker shoots tiny particles that hit your eardrumSound waves create wind that blows into your ear30s
- Q6What is the medium in most situations involving sound waves?MetalVacuumAirWater30s
- Q7Which of the following is NOT a medium through which sound waves can travel?Human fleshVacuumWaterMetal30s
- Q8What allows waves to transport energy through a medium without transporting the medium itself?The amplitude of the waveThe frequency of the waveThe speed of the waveThe oscillation of particles in the medium30s
- Q9Why do our voices sound different on audio recordings compared to how we hear them?Microphones distort our voicesOur ears hear differently when we speakAudio recordings only capture air-conducted sound, not bone-conducted soundAudio recordings amplify certain frequencies30s
- Q10When we speak, how many "contributions" to our voice do we typically hear?FourOneTwoThree30s
- Q11Which path does NOT contribute to how we hear our own voice when speaking?Vibrations traveling through our flesh to our eardrumsSound waves traveling through air to our earsVibrations traveling through our skull to our eardrumsSound waves reflecting off nearby surfaces30s
- Q12What type of energy does oscillating air next to your ear possess?Kinetic energyThermal energyPotential energyChemical energy30s
- Q13Which statement best describes how sound waves transport energy?By transferring oscillations from one group of particles to the nextBy moving air molecules from one place to anotherBy generating heat in the mediumBy creating wind currents30s
- Q14If air were being transported across the room from a sound source, it would be better characterized as:An echoResonanceA sound waveWind30s
- Q15According to the video, why shouldn't you worry too much about how your voice sounds on recordings?Because you can easily change your voiceBecause your friends are used to how your voice soundsBecause you shouldn't waste time worrying about what others think of youBecause audio recordings are usually inaccurate30s