Year 9 · Autumn First Half
Physics
4 lessons from 1 unit.
Unit P2 · lessons 1 to 4 of 5
Energy has a price. This unit is where the quantity you learned to conserve turns into a number on a meter, a rating on a plug and a line on a bill.
- 01Energy in foodQuantitativeA packet says “229 kcal” and also “958 kJ”. Two completely different numbers for the same crisps. Is one of them wrong?Open this lesson
- 02Power ratings in wattsQuantitativeA 2000 W kettle and a 15 W home router. Which one costs you more over a day?Open this lesson
- 03Calculating energy transferredQuantitativeAn electric shower is rated 8500 W and you are in it for ten minutes. Someone leaves a 60 W lamp on for a full day. Which one transferred more energy?Open this lesson
- 04Reading a fuel billQuantitativeA real electricity bill lists “units used: 412” and charges 27p for each one. Nowhere on the page does it say what a unit is. What have you been buying?Open this lesson
Back to all three sciences this half term The whole KS3 Physics course