sounds

• How are sounds made?


  Sounds are made when objects vibrate.
• What happens to the air particles when an object vibrates?


  The air particles around the object vibrate as well.
• How does sound travel to your ear?

  The vibration through the air causes the sound to travel to your ear.
• What is the effect of the length of a stretched rubber band on the sound produced when plucked?


  • Longer length produces a lower sound
  • Shorter length produces a higher sound
• What determines the pitch of a sound?


  Pitch depends on the speed of the vibrations.
• What type of sound do we hear when an object vibrates quickly?

  We hear a high-pitched sound.
• What happens to the pitch of a sound when an object vibrates slowly?


  The pitch of the sound is low.
• How do different lengths of bars in a xylophone affect the pitch of the sound produced?


  • Shortest bar vibrates quickly, producing a high-pitched sound
  • Longest bar vibrates slowly, producing a low-pitched sound
• How does a clarinet produce sound?


  A clarinet makes a sound when the musician blows into the mouthpiece.
• What changes the pitch of the sound produced by a clarinet?


  Opening or closing holes on the sides changes the length of the tube inside.
• How does pressing down on a string of a violin affect the sound?


  Pressing down on a string shortens the part of the string that vibrates, raising the pitch.
• How is the volume of sounds measured?


  • Measured using a sound meter
  • Unit of measurement is decibel (dB)
• What types of sounds are commonly heard in daily life?

  • Sounds vary in volume and pitch
  • Examples include music, speech, and environmental sounds