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SO — SoomaaliEN — English

Sound vibrations

Lesson 3 / 8

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Lesson details

Lesson outcome

Waxaan sharxi karaa sida codka loo sameeyo iyo waxa go'aamiya mugga iyo heerka codka.

Introduction

In this lesson: I can describe how sounds are caused and explain what sets the volume and pitch of a sound. All sounds are caused by vibrations. Some vibrations are too small or too fast to see. The volume of a sound means how loud or quiet it is. The pitch of a sound means how high or low it is.

Show transcript
All sounds are caused by vibrations. Some vibrations are too small or too fast to see. The volume of a sound means how loud or quiet it is. The pitch of a sound means how high or low it is. Amplitude is a measure of the distance or size of a vibration. The greater the amplitude, the louder a sound. Frequency is a measure of how often the vibrations occur. The greater the frequency, the higher the pitch. Sounds of different volume and pitch can be produced by controlling the amplitude and frequency of vibrations.

Worksheet

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Quizzes

  1. 1. How many of the following can make a sound: a vibrating string, a vibrating drum skin or vibrating air in a tube.

    • 0
    • 1
    • 2
    • Correct answer:3

  2. 2. How would the sound of a wooden spoon hitting a pan change if the pan were hit harder?

    • Correct answer:the volume of the sound would increase
    • the pitch of the sound would increase (a squeakier sound)
    • the volume of the sound would decrease
    • the pitch of the sound would decrease (a deeper sound)

  3. 3. Which of the following can cause the pitch of a sound to change?

    • striking a key on a piano harder
    • Correct answer:striking different keys on a piano
    • Correct answer:plucking different strings on a guitar
    • plucking the strings on a guitar more gently

  4. 4. Which of the following happen in our ears to allows us to hear a sound?

    • sound enters our heads through a tiny hole
    • Correct answer:sound makes our eardrums vibrate
    • sound moves air into our ears
    • Correct answer:Sound makes the air in our ears vibrate

  1. 1. How would you describe the sound of thunder?

    • high pitch and low volume
    • high pitch and high volume
    • low pitch and low volume
    • Correct answer:low pitch and high volume

  2. 2. How would you describe the sound of a mouse's squeak?

    • Correct answer:high pitch and low volume
    • high pitch and high volume
    • low pitch and low volume
    • low pitch and high volume

  3. 3. Which of the following statements about sound are related to the frequency?

    • Correct answer:the number of vibrations per second
    • it sets the volume of the sound
    • Correct answer:it sets the pitch of the sound
    • the size of a vibration from the rest position

What pupils see

The same lesson as a pupil sees it. You can set any section as work on its own.

  • IntroductionPrepare
  • Starter quizActivate · 4 questions
  • Lesson videoLearn
  • Exit quizCheck · 3 questions
This content is by Cashar and published under an open licence.