Year 8 · Spring First Half
Physics
6 lessons from 1 unit.
Unit P6 · lessons 1 to 6 of 9
A wave carries energy across a room, an ocean or a steel girder and leaves everything where it found it. Follow that one idea from a bobbing buoy to a crack nobody can see.
- 01Waves on water: what a wave isModelA wave crosses a pond in seconds. Drop a cork in and it bobs a hundred times and stays exactly where you put it. Both of those are true at once, and the second one is the more useful.Open this lesson
- 02Transverse waves, reflection and superpositionModelTwo waves arrive at the same patch of water and each one wants the surface somewhere different. The surface obeys both at once, and the arithmetic for that is the whole lesson.Open this lesson
- 03How sound is madeProcessA guitar string, a loudspeaker cone and two folds of tissue in your throat have nothing in common except the one thing that matters: all three are moving to and fro, fast, and pushing on the air while they do it.Open this lesson
- 04Sound is longitudinalContrastEvery drawing of sound you have ever seen was a wavy line. Almost none of them meant that the air goes up and down, and this lesson is about the difference.Open this lesson
- 05Frequency, pitch and loudnessQuantitativeTwo dials on a signal generator, and neither one does anything the other one does. One sets how high the note is. One sets how loud it is. Getting them the wrong way round is the single most common slip in this topic.Open this lesson
- 06Sound needs a mediumInvestigationA buzzer in a jar goes quiet while you watch it still ringing. Nothing has been done to the buzzer at all — something has been taken away from the space around it.Open this lesson
Back to all three sciences this half term The whole KS3 Physics course