IP Combined Science Notes (Lower Sec, Year 1-2): 08) Work, Energy, Power & Pressure
In one line
Apply work-energy relationships, efficiency, and pressure calculations in solids and fluids.
Last updated 30 Nov 2025
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- Start Here
- Learning targets
- 1 Work & energy
- 2 Power & efficiency
Q: What does IP Combined Science Notes (Lower Sec, Year 1-2): 08) Work, Energy, Power & Pressure cover?
A: Apply work-energy relationships, efficiency, and pressure calculations in solids and fluids.
Energy never disappears - it changes form. Track these transformations with equations, careful unit usage, and thought-out assumptions.
These notes align with MOE's Lower Secondary Science syllabus themes commonly taught in IP Sec 1–2, and act as a bridge into upper-secondary Physics, Chemistry, and Biology.
Status: MOE Lower Secondary Science syllabus (current release) checked 2025-11-30 - scope unchanged; remains the reference for these combined science notes.
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Start Here
| Read time | What to take away |
| 1 second | Energy changes form; pressure spreads force over area. |
| 10 seconds | Track input energy, useful output energy, and losses. For pressure, check whether area, depth, or fluid density is the key variable. |
| 100 seconds | Example: a sharp knife cuts better because the same force acts over a smaller area, giving higher pressure at the edge. |
Learning targets
- Calculate work done, kinetic energy, and gravitational potential energy in SI units.
- Relate power to rate of energy conversion and discuss efficiency improvements.
- Apply pressure formulas in solids (force over area) and fluids (depth dependence).
- Interpret hydraulic system diagrams and solve transmission-of-force problems.
1 Work & energy
| Quantity |
