Which of the following objects can produce sounds?, soft objects, radio stations, vibrating objects, objects under pressure, Which medium does sound waves travel faster?, air, liquids, solids, vacuum, Which area will not be able to hear any sound?, A theater, A closed room, A swimming pool, In the outer space, What kind of wave whose motion is parallel to the motion of particles of the medium?, longitudinal wave, mechanical wave, transverse wave, none of the above, What is produced when an object vibrates?, light, heat, sound, magnetism, The jumping of grains on a drum shows that sound is caused by _______________, electricity, vibrations, pressure, light, Which type of wave is sound?, Mechanical wave, Electromagnetic wave, Light wave, Radio wave, Which of the following is an example of a sound source?, Mirror, Battery, Tuning fork, Flashlight, Sound is classified as a mechanical wave because ____________, it can travel in space, it requires a medium to travel, it moves in straight lines only, If a bell rings inside a vacuum container, what happens as the air is removed?, The sound becomes louder, The bell stops vibrating, The sound disappears gradually.

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