###### New material to the syllabus highlighted in blue

###### Material modified from the old syllabus in yellow

*Wave properties*

- Conduct a practical investigation involving the creation of mechanical waves in a variety of situations in order to explain:
- the role of the medium in the propagation of mechanical waves
- the transfer of energy involved in the propagation of mechanical waves (ACSPH067, ACSPH070)

- conduct practical investigations to explain and analyse the differences between:
- transverse and longitudinal waves (ACSPH068)
- mechanical and electromagnetic waves (ACSPH070, ACSPH074)

- construct and/or interpret graphs of displacement as a function of time and as a function of position of transverse and longitudinal waves, and relate the features of those graphs to the following wave characteristics:
- velocity
- frequency
- period
- wavelength
- displacement and amplitude (ACSPH069)

- solve problems and/or make predictions by modelling and applying the following relationships to a variety of situations:

**Resource – Wave Properties – 4 pages**

*Wave Behaviour*

- explain the behaviour of waves in a variety of situations by investigating the phenomena of:
- reflection
- refraction
- diffraction
- wave suspension (ACSPH071, ACSPH072)

**Resource – Wave Behaviour – 2 pages**

- conduct an investigation to distinguish between progressive and standing waves (ACSPH072)

**Resource – Wave Superposition – 3 pages**

- conduct an investigation to explore resonance in mechanical systems and the relationships between:
- driving frequency
- natural frequency of the oscillating system
- amplitude of motion
- transfer/transformation of energy within the system (ACSPH073)

**Investigation-Wave Behaviour-5 pages**

*Sound Waves*

- construct a practical investigation to relate the pitch and loudness of a sound to its wave characteristics
- model the behaviour of sound in air as a longitudinal wave
- relate the displacement of air molecules to variations in pressure (ACSPH070)
- investigate quantitatively the relationship between distance and intensity of sound
- conduct investigations to analyse the reflection, diffraction, resonance and superposition of sound waves (ACSPH071)

**Investigation-Interference of Sound Waves-4 pages**

- investigate and model the behaviour of standing waves on strings and/or in pipes to relate quantitatively the fundamental and harmonic frequencies of the waves that are produced to the physical characteristics (eg length, mass, tension, wave velocity) of the medium (ACSPH072)
- analyse qualitatively and quantitatively the relationships of the wave nature of sound to explain:
- beats
- the Doppler effect

**Resource-Doppler and Beats-3 pages**

*Ray Model of light*

- conduct a practical investigation to analyse the formation of images in mirrors and lenses via reflection and refraction using the ray model of light (ACSPH075)
- conduct investigations to examine qualitatively and quantitatively the refraction and total internal reflection of light (ACSPH075, ACSPH076)

- predict quantitatively, using Snell’s Law, the refraction and total internal reflection of light in a variety of situations
- conduct a practical investigation to demonstrate and explain the phenomenon of the dispersion of light
- conduct an investigation to demonstrate the relationship between inverse square law, the intensity of light and the transfer of energy (ACSPH077)
- solve problems or make quantitative predictions in a variety of situations by applying the following relationships to:
- – for the refractive index of medium is the speed of light in the medium
- (Snell’s Law)
- – for the critical angle of medium
- – to compare the intensity of light at two points, and

**Resource – Ray Model of Light – 4 pages**

*Thermodynamics*

- explain the relationship between the temperature of an object and the kinetic energy of the particles within it (ACSPH018)

**Resource – Temperature – 1 page**

- explain the concept of thermal equilibrium (ACSPH022)

**Resource – Thermal Equilibrium – 1 page**

- analyse the relationship between the change in temperature of an object and its specific heat capacity through the equation

**Resource – Specific Heat – 2 pages**

- investigate energy transfer by the process of:
- conduction
- convection
- radiation (ACSPH016)

**Investigation – Thermal Conductivity – 3 pages**

- conduct an investigation to analyse qualitatively and quantitatively the latent heat involved in a change of state

**Investigation – Latent Heat – 3 pages**

**Resource – Latent Heat – 2 pages**

- model and predict quantitatively energy transfer from hot objects by the process of thermal conductivity

**Resource-Energy Transfer-3 pages**

- apply the following relationships to solve problems and make quantitative predictions in a variety or situations:
- , where is the specific heat capacity of a substance
- ,

where is the thermal conductivity of a material