Module 3: Physics
Particulate nature of matter and thermal expansion.
Use this workbook to practice core KCSE communication skills and record evidence of progress.
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SECTION: PHYSICS
MODULE: 3
Part A: Units
1. Particulate nature of matter
a. Matter made of particles
b. Brownian motion
c. States of matter
d. Diffusion
2. Thermal expansion
a. Temperature
b. Thermometers
c. Expansion of solids, liquids and gases
d. Effects of expansion
e. Anomalous expansion of water
f. Applications
Part B: Project
Investigate diffusion and thermal expansion through simple tasks.
Project Title: Particles and Expansion in Daily Life
Objective: Observe particle behavior and thermal expansion using everyday materials.
Project Instructions:
- 1. Demonstrate diffusion using ink in water and record observations.
- 2. Identify one example of Brownian motion (dust in light or pollen in water).
- 3. Set up a simple expansion activity (heated bottle and balloon or heated metal lid).
- 4. Explain the effects observed using particle theory.
- 5. Consult your coach where necessary.
Evidence to Submit:
- • Observation notes on diffusion and expansion.
- • Example of Brownian motion.
- • Short explanation linking to particle theory.
Submission
Part C: Training Others
Teach a peer about particles and thermal expansion.
Guidance:
- • Explain particle motion in solids, liquids, and gases.
- • Demonstrate diffusion or expansion using a simple activity.
- • Ask the learner to describe one application.
Reflection:
- • What did the learner understand well?
- • What needed more explanation?
- • What support do you need from your coach?
Submission
Part D: Assessment
Competency Levels:
1 = Expectations not met
2 = Partially met
3 = Satisfactorily met
4 = Excellently met
Self-assessment:
- • Particulate nature of matter:
- • Brownian motion and diffusion:
- • Thermal expansion and applications:
Coach assessment:
- • Particulate nature of matter:
- • Brownian motion and diffusion:
- • Thermal expansion and applications:
Submission
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