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- 1. Multiple ChoiceSound is able to travel faster in solids than in air because the molecules in a solid arecloser together than air moleculesmore easily moved than air moleculesmoving faster than air moleculesmoving faster than air moleculeslarger than air molecules
- 2. Multiple ChoiceBruce plays his violin every Friday night for the symphony. Before he plays, he plucks each string to see if his violin is in tune. Which is most responsible for the generation of sound waves from his violin?material of the violinvibrations of the stringmovement of the violincomposition of the string
- 3. Multiple ChoiceSound waves travel the fastest throughrockseawaterspaceatmosphere
- 4. Multiple ChoiceSound waves travel the fastest through dense materials. Through which of these would sound waves travel the SLOWEST?airglassmetalwater
- 5. Multiple ChoiceThe loudness of sound can be changed bydecreasing pitchincreasing the frequencyincreasing the amplitudedecreasing the wavelength
- 6. Multiple ChoiceA doorbell circuit converts electrical energy into mechanical energy. The mechanical energy is in the form of vibrations that ultimately producechemical energythermal energyradiant energysound energy
- 7. Multiple ChoiceThe sound heard when a piano key is hit is caused byvibrationrefractionmomentumacceleration
- 8. Multiple ChoiceA substance that carries sound waves is calleda fulcruma mediuma spectrumequilibrium
- 9. Multiple Choice
Leilani plays a knee drum.
When she strikes the drum with the mallet, it makes a sound. Why does the drum make a sound?because her knee movesbecause the drum head is roundbecause the top of the drum vibratesbecause the mallet is made of wood - 10. Multiple ChoiceA sound wave travels at different speeds through different substances. Through which substance would a sound wave travel faster?solid groundbright lightouter spacedry air
- 11. Multiple ChoiceA fifth-grade student fastened a piece of cardboard to his bicycle wheel so that the spokes would cause the card to vibrate. When the student rode the bike fast, the student heard a high pitch. When the student rode the bike slowly, the student heard a low pitch. Which best explains why the student heard both high and low pitches from the cardboard?The vibrations were faster when the student rode slowly.The vibrations were slower when the student rode fasterThe cardboard vibrated at the same speed.The cardboard vibrated at different speeds when he rode slower and faster.
- 12. Multiple ChoiceMattie wanted to measure the speed of sound through different materials. Through which material will Mattie most likely find that sound travels the fastest?block of aluminumballoon full of airtank filled with watertank filled with oil
- 13. Multiple ChoiceLight waves travel faster than sound waves, so a lightning bolt can be seen before the thunder is heard. Which factor can also affect how quickly thunder is heard?the electrical charge of the sound wavesthe direction in which the sound travelsthe amount of energy released by the sound wavethe type of material through which the sound wave travels
- 14. Multiple ChoiceWhen a book is dropped onto a wooden desk, the molecules in the wood begin to vibrate from the force of the book. Which of these is produced by the vibrations?frictioninterferencesound wavesultrasonic waves
- 15. Multiple ChoiceWhich letter represents the amplitude of the wave in the diagram?WXYZ
- 16. Multiple ChoiceWhat allows two students standing ten feet apart to hear each other talk?air vibrationselectric currentsolar radiationsubatomic particles
- 17. Multiple ChoiceHow does sound usually travel?An object vibrates, and those vibrations travel through the air in one direction as transverse waves.An object vibrates, and those vibrations carry air in one direction as longitudinal waves.An object vibrates, and those vibrations travel through the air in all directions as longitudinal waves.An object vibrates, and those vibrations carry air in all directions as transverse waves.
- 18. Multiple ChoiceWhat is the most important property architects must consider when selecting materials for the walls, ceilings, and floors for a new concert hall?thermal propertieschemical propertieselectrical propertiesacoustical properties
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