Year 7 · Summer First Half
Physics
2 lessons from 1 unit.
Unit P11 · lessons 1 to 2 of 4
Density is what the particle model is for: how tightly matter is packed, why a jiggling speck proves the particles are there, why hot is not the same as a lot, and why ice is the one solid that floats on its own melt.
- 01DensityQuantitativeA kilogram of lead and a kilogram of feathers weigh the same. Everybody knows that, and everybody still feels it is wrong. What they are reaching for is a different quantity altogether.Open this lesson
- 02Brownian motionModelSome specks in a drop of water refuse to settle. They jiggle, hour after hour, with nothing touching them and nothing alive inside them. Explaining that jiggle is how the world was talked into believing in atoms.Open this lesson
Back to all three sciences this half term The whole KS3 Physics course