| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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Echo sounding, using high frequency sound waves is used to detect objects in deep water and measure water depth. |
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(HT and Physics Only) How can objects in deep water be detected? show a video of a dolphin using echo location. Ask students to draw a diagram to show how it is used.
https://www.youtube.com/watch?v=7Xr9BYhlceA |
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Sound waves can travel through solids causing vibrations in the solid. |
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(Physics only) How do sound waves travel? Use phet animations to show sound waves, ask students if they are longitudinal or traverse and justify why. https://phet.colorado.edu/en/simulation/legacy/sound |
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Within the ear, sound waves cause the ear drum and other parts to vibrate which causes the sensation of sound. |
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(Physics only) What causes the sensation of sound? Video on how the ear works:
https://www.youtube.com/watch?v=EEvwwGui2Ac
EW: Describe and explain why ear defenders are a required piece of equipment when pneumatic drills |
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The conversion of sound waves to vibrations of solids works over a limited frequency range. This restricts the limits of human hearing. |
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(Physics only) What restricts the limits of human hearing? Complete a hearing test. Students stand and then sit down when they can no longer hear the sound. https://www.youtube.com/watch?v=VxcbppCX6Rk&feature=youtu.be |
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Students should be able to describe, with examples, processes which convert wave disturbances between sound waves and vibrations in solids. Examples may include the effect of sound waves on the ear drum |
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(Physics only) What causes wave disturbances between sound waves and vibrations in solids? GF: Why can you hear the sea in a shell? |
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Students should be able to explain why such processes only work over a limited frequency range and the relevance of this to human hearing. |
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(Physics only) |
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Students should know that the range of normal human hearing is from 20 Hz to 20 kHz. |
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(Physics only) What is the normal range of human hearing? |
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