SOUND AND HEARING www.sciencetutors.zoomshare.com
SOUND AND HEARING <ul><li>In unit 8L Sound and Hearing you are expected to: </li></ul><ul><li>build on your knowledge of s...
Quick Quiz (8 minutes) <ul><li>How are sounds made or produced? </li></ul><ul><li>How are sounds transported  </li></ul><u...
What have these 2 objects got in common? www.sciencetutors.zoomshare.com
This is how sound is produced: Identify which part(s) vibrates to make the sound.
<ul><li>Ask pupils how sound is produced. Show pupils examples where the vibration is easily seen,  eg tuning fork and pol...
Identifying and Describing Sound <ul><li>Teacher to play an audio tape of different sounds, and ask students to identify a...
Quick Discussion Session 1 <ul><li>Sound can travel through a vacuum </li></ul><ul><li>True or False </li></ul><ul><li>And...
Quick Discussion Session 2 <ul><li>The vibrations that make sound are transferred through a medium  </li></ul>True or Fals...
Quick Discussion Session 3 <ul><li>Draw the particle arrangement in Solid, liquids and gases. </li></ul><ul><li>Describe h...
Investigating Sound in Vacuum <ul><li>Your task is to write down a prediction of what will happen when the bell jar contai...
Checking Progress 1 <ul><li>Sound travels at different speeds in different types of material.  </li></ul><ul><li>TRUE or F...
Compare the speed of sound in the following www.sciencetutors.zoomshare.com
<ul><li>Sound waves dissipate less energy when travelling through liquids and solids, compared with air. This allows them ...
<ul><li>Your  first task  is to produce a list of key questions related to the work that has been covered in the last thre...
Review Work on Sound And Hearing <ul><li>Review work on sound and hearing by helping pupils construct a concept map which ...
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SOUND AND HEARING - PART 1

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In unit 8L Sound and Hearing you are expected to:
build on your knowledge of sound and hearing
explain how sound travels through media (solid, liquid and gas)
give an explanation of how the human ear works,
find out about the harmful effects of loud noise and how loud noise can be reduced

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SOUND AND HEARING - PART 1

  1. 1. SOUND AND HEARING www.sciencetutors.zoomshare.com
  2. 2. SOUND AND HEARING <ul><li>In unit 8L Sound and Hearing you are expected to: </li></ul><ul><li>build on your knowledge of sound and hearing </li></ul><ul><li>explain how sound travels through media (solid, liquid and gas) </li></ul><ul><li>give an explanation of how the human ear works, </li></ul><ul><li>find out about the harmful effects of loud noise and how loud noise can be reduced </li></ul>
  3. 3. Quick Quiz (8 minutes) <ul><li>How are sounds made or produced? </li></ul><ul><li>How are sounds transported </li></ul><ul><li>OR </li></ul><ul><li>How does sound travel through solids, liquids and gases? </li></ul>www.sciencetutors.zoomshare.com
  4. 4. What have these 2 objects got in common? www.sciencetutors.zoomshare.com
  5. 5. This is how sound is produced: Identify which part(s) vibrates to make the sound.
  6. 6. <ul><li>Ask pupils how sound is produced. Show pupils examples where the vibration is easily seen, eg tuning fork and polystyrene ball, loudspeaker and grains of sand. </li></ul>Tuning Fork is used in the study of sound in Physics and is a system for the visualization, analysis www.sciencetutors.zoomshare.com
  7. 7. Identifying and Describing Sound <ul><li>Teacher to play an audio tape of different sounds, and ask students to identify and or describe the sounds using keywords like- </li></ul><ul><li>'high pitch' and or 'low pitch' to describe pitch, </li></ul><ul><li>And 'loud' and 'soft' to describe intensity. </li></ul>
  8. 8. Quick Discussion Session 1 <ul><li>Sound can travel through a vacuum </li></ul><ul><li>True or False </li></ul><ul><li>And Why? </li></ul>www.sciencetutors.zoomshare.com
  9. 9. Quick Discussion Session 2 <ul><li>The vibrations that make sound are transferred through a medium </li></ul>True or False And Why? www.sciencetutors.zoomshare.com
  10. 10. Quick Discussion Session 3 <ul><li>Draw the particle arrangement in Solid, liquids and gases. </li></ul><ul><li>Describe how sounds travel through solids, liquids and gases using above diagrams, </li></ul><ul><li>Use the particle theory to explain why sound needs a medium to travel. </li></ul>www.sciencetutors.zoomshare.com
  11. 11. Investigating Sound in Vacuum <ul><li>Your task is to write down a prediction of what will happen when the bell jar contains: </li></ul><ul><li>a) Air </li></ul><ul><li>b) No Air (VACUUM) . </li></ul>www.sciencetutors.zoomshare.com
  12. 12. Checking Progress 1 <ul><li>Sound travels at different speeds in different types of material. </li></ul><ul><li>TRUE or FALSE? </li></ul><ul><ul><li>Explain your choice of answer. </li></ul></ul>www.sciencetutors.zoomshare.com
  13. 13. Compare the speed of sound in the following www.sciencetutors.zoomshare.com
  14. 14. <ul><li>Sound waves dissipate less energy when travelling through liquids and solids, compared with air. This allows them to travel more quickly and to retain intensity. </li></ul>To see animations of sound in water Visit: http://www.fishfinderdiscounts.com/files/1694667/uploaded/fishfindersonar.gif www.sciencetutors.zoomshare.com
  15. 15. <ul><li>Your first task is to produce a list of key questions related to the work that has been covered in the last three lessons of </li></ul><ul><li>SOUNDS AND HEARING </li></ul><ul><li>Your second task is to pick out all challenging questions and discuss answers to them using appropriate terminology or concepts with evidence and reasons in your answers . </li></ul>
  16. 16. Review Work on Sound And Hearing <ul><li>Review work on sound and hearing by helping pupils construct a concept map which makes connections between different ideas within this unit using terms like: </li></ul><ul><li>Pitch, Loudness, Amplitude, Decibel, Hearing, Vibration, Sound insulation. </li></ul><ul><li>Discuss outcomes with pupils. </li></ul>

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