Revision
The semester exam will be a cumulative exam of all three units: Waves, Electricity and Magnetism & Radioactivity. The main focus will be on electricity and magnetism & radioactivity.
Notice! The first question on the exam will ask you to state the units and symbols for different quantities.
E.g.
frequency | f | hertz | Hz |
Topics include:
WAVES
- amplitude, frequency, period, wavelength
- using the wave equation
- transverse and longitudinal waves
- wave phenomena (refraction, reflection and diffraction. NO INTERFERENCE, NO STANDING WAVES)
- using Snell's law
- the electromagnetic spectrum (you need to know the two extremes. DO NOT MEMORISE THE FREQUENCIES OR WAVELENGTHS)
- uses of waves
- sound waves (loudness and pitch)
ELECTRICITY AND MAGNETISM
- basic static electricity (how to create static electricity)
- electric conductors and insulator
- electric circuits
- drawing electric circuits
- how to measure the current and the voltage
- using Ohm's Law to calculate the voltage, current or resistance
- Kirchhoff's two laws
- series and parallel circuits (calculating the total resistance, voltage over components and circuit through different branches)
- Using the formula P=UI or the variations in order to calculate the power a component in a circuit (e.g. a light bulb)
- voltage-current graph
RADIOACTIVITY
- Knowing the three different kinds of radiation and their properties (alfa, beta and gamma)
- decay equations
- uses of radiation (thickness control, tracers and sterilising)
- half life calculations and graphs