On the hunt for practice questions for Year 11 Physics Module 3: Waves and Thermodynamics? Well, luckily we’re here to help you out! Just in case you missed it, we broke down Module 3 in this article here!
We’ve structured the questions for Physics Module 3: Waves and Thermodynamics by breaking them up into five parts (based on each inquiry question). So today we are going to have a look at:

 Wave Properties
 Wave Behaviour
 Sound Waves
 Ray Model of Light
 Thermodynamics
Let’s get started on these Physics Module 1: Waves and Thermodynamics practice questions!
Wave Properties
Wave Behaviour
Sound Waves
Ray Model of Light
Thermodynamics
Wave Properties
Question 1
If two waves have the same frequency, which other wave property must also be the same?
Solve problems and/or make predictions by modelling and applying the following relationships to a variety of situations
Question 2
Distinguish the similarities and differences between transverse matter waves and transverse electromagnetic waves.
Conduct practical investigations to explain and analyse the differences between:
 transverse and longitudinal waves (ACSPH068)
 mechanical and electromagnetic waves (ACSPH070, ACSPH074)
Question 3
A wave has a wavelength of 0.30 m and a period of 5.0 x 104s. What is the velocity and frequency of the wave?
Solve problems and/or make predictions by modelling and applying the following relationships to a variety of situations
Question 4
The amount of energy carried by a transverse matter wave is dependent on which wave characteristic? Explain your reasoning.
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)
Wave Behaviour
Question 5
When a sound wave travelled from air to a container of Krypton gas, the speed of the wave decreased from 340 ms1 to 220 ms1, If the frequency of the sound wave in air was 700 Hz, what is the frequency of the wave in the container?
Explain the behaviour of waves in a variety of situations by investigating the phenomena of:
 reflection
 refraction
 diffraction
 wave superposition
(ACSPH071, ACSPH072)
Question 6
Define resonance and provide an example to help explain your answer.
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)
Sound Waves
Question 7
How would classical musicians use beats to tune their instruments?
Analyse qualitatively and quantitatively the relationships of the wave nature of sound to explain:
 beats
 the Doppler effect
Question 8
A bystander notices that when stationary, the frequency of a police siren is 1800Hz. What would the frequency of the siren be if a bystander approaches the police car at 2ms1, and the police car approaches the bystander at 20ms1?
Analyse qualitatively and quantitatively the relationships of the wave nature of sound to explain:
 beats
 the Doppler effect
Question 9
Explain which wave properties will create beats.
Analyse qualitatively and quantitatively the relationships of the wave nature of sound to explain:
 beats
 the Doppler effect
Question 10
A person is standing between two cliffs. He is 800m from the nearest cliff and yells. If the velocity of sound in air is 340 ms1, and he hears the second echo from the cliff behind him 5.0s after he hears the first echo. What is the distance between the two cliffs?
Conduct investigations to analyse the reflection, diffraction, resonance and superposition of sound waves (ACSPH071)
Question 11
What is the relationship between the harmonic of a standing wave in a string and the frequency of the standing wave?
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)
Question 12
Two people are whispering to each other, although they are whispering at the same volume, one has a much higher pitch than the other. Someone else stands just outside and was able to hear one person talk, who was this person? Justify your answer.
Conduct a practical investigation to relate the pitch and loudness of a sound to its wave characteristics
Ray Model of Light
Question 13
Explain differences in image formed by a concave and convex lens. Use diagrams to strengthen your answer.
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)
Question 14
Create an expression for the critical angle of a substance and the relative refractive index of the boundary involved in the interaction using Snell’s law.
Solve problems or make quantitative predictions in a variety of situations by applying the following relationships to:
 for the refractive index of medium ?, Snell’s Law
Question 15
What is total internal reflection?
Predict quantitatively, using Snell’s Law, the refraction and total internal reflection of light in a variety of situations
Question 16
How does the inverse square law for electromagnetic radiation complicate our ability to study our Universe?
Conduct an investigation to demonstrate the relationship between inverse square law, the intensity of light and the transfer of energy (ACSPH077)
Thermodynamics
Question 17
Find the final temperature and total heat transfer if 200g of ice is placed in a room with a temperature of 25ºC. The specific heat capacity of water is 4184 Jkg1K1 and the latent heat of fusion is 334000 Jkg1.
Apply the following relationships to solve problems and make quantitative predictions in a variety of situations:
 ?=??Δ? where c is the specific heat capacity of a substance
Question 18
Two metal squares of the same material have a surface area of 3m2 and 6m2. The two squares are heated evenly in the same environment and have the same thickness. Predict the rate at which each square loses energy as it becomes cooler. Justify your answer.
Apply the following relationships to solve problems and make quantitative predictions in a variety of situations:
 ?=??Δ? where c is the specific heat capacity of a substance
Question 19
A house has 200 m2 worth of windows that are 2.5 mm thick. The glass has a thermal conduction constant of 0.75 Wm1K1. If the outside temperature is 5ºC and the internal temperature is 27ºC, how much energy is transferred via the windows per hour?
Apply the following relationships to solve problems and make quantitative predictions in a variety of situations:
 ?=??Δ? where c is the specific heat capacity of a substance
Question 20
What is the relationship between the latent heat and water going through the different states? Explain your reasoning.
Conduct an investigation to analyse qualitatively and quantitatively the latent heat involved in a change of state
And that’s all for our 20 practice questions for Physics Module 3: Waves and Thermodynamics. Good luck!
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