Cambridge · Form 3 · Syllabus 5054
Physics
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- Physical quantities, measurement and motion SI units and prefixes; measuring length (rule, micrometer, vernier calipers), volume (measuring cylinder, displacement), time (stopwatch – time many oscillations). Scalars (distance, speed, mass, energy) and vectors (displacement, velocity, force, acceleration); resultant of two vectors at right angles by calculation or scale drawing.
- Forces, mass, weight, density and momentum Weight W = mg (g ≈ 9.8 N/kg on Earth). Mass is constant; weight depends on the gravitational field.
- Energy, work, power and pressure Kinetic, gravitational potential, chemical, elastic, internal (thermal), nuclear and electrostatic stores; energy is transferred mechanically, electrically, by heating and by radiation. Conservation of energy.
- Thermal physics Solids, liquids and gases: arrangement and motion of particles; Brownian motion as evidence for moving particles; gas pressure explained by molecular collisions with container walls.
- Waves: properties, light, sound and the electromagnetic spectrum Transverse and longitudinal waves; amplitude, wavelength, frequency, period; v = fλ; reflection, refraction and diffraction (ripple tank).