IP Combined Science Notes (Lower Sec, Year 1-2): 08) Work, Energy, Power & Pressure

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13 Dec 2025, 00:00 Z

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 SEAB Lower Secondary Science (6093/5099 IP pathways) scope used in IP programmes (exams from 2026 for O-Level track).

Status: MOE/SEAB Lower Secondary Science 2026 syllabus (latest 2024 release) checked 2025-11-30 - scope unchanged; remains the reference for these combined science notes.

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	Formula	Unit
Work done	$W = F s \cos \theta$

IP Combined Science Notes (Lower Sec, Year 1-2): 08) Work, Energy, Power & Pressure

Learning targets

1. Work & energy

Worked example - Roller coaster drop

2. Power & efficiency

Appliance example

3. Pressure in solids

Example - Snowshoes

4. Pressure in fluids

Hydraulic lift

Try it yourself

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