Study

U4L3 Sound Wave

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  • Mary is sitting in her bedroom listening to her radio playing some music. Why can she hear the sound from her radio?
    because sound waves travel through the air to her ears
    because Mary and her radio are in the same room
    because the music is pleasant
    because the volume is low
  • Why are whales and dolphins are able to communicate in water?
    because sound waves can travel in liquids
    because whales and dolphins live in water
    because they swim in groups
    because whales and dolphins have ears
  • Sóng âm
    Sound wave
  • When a sound source vibrates, the vibration travelling through a medium is called s___ w___.
    sound waves
    sound wall
    sound wives
    sound will
  • Nguồn âm
    Sound source
  • Which of the following causes sound?
    vibration from the sound sources
    reflection from the sound waves
    the size of the sound sources
    the colour of the sound sources
  • Among solids, liquids and gases, sound travels the . . . in gases.
    fastest
    slowest
  • When sound waves travel from West to East, in which direction do the vibration move?
    East to West
    air particles don't move
    North to South
    West to East
  • Why does sound NOT travel in a vacuum?
    because there are no particles to vibrate
    because a vacuum is too large
    because it is too dark in a vacuum
    because it is too cold in a vacuum
  • Among solids, liquids, and gases, sound travels fastest in . . .
    solids
  • Dao động
    Vibration
  • Sound waves cannot travel in vacuum because there are few or even no p_rt_c_es to vibrate.
    particles
  • It can be seen many times in science-fiction movies that an explosion occurs in space and a loud "boom" is created. Is this possible?
    No, because sound needs a medium to travel through.
    Yes, because sound can travel in space.
    No, because nothing can explode in space.
    Yes, because sound can travel in space.
  • Between a liquid and gas, sound waves travel . . . in liquid
    faster
    slower
  • Between a solid and a gas, sound waves travel slower in the gas
    FALSE
    TRUE
  • When sound waves travel, places where particles are close together are called . . .
    compressions
    refraction
  • Which statement is true about sound?
    sound comes from the vacuum
    sound comes from sources that vibrate
    sound comes from all objects
    sound comes from the ear
  • Âm thanh
    Sound
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