Physics: Units 1 to 4 explained
From heating and motion to fields, relativity and the quantum
The study of matter, energy and their interactions, from everyday heating and motion through to fields, relativity and quantum theory. Senior Physics is strongly mathematical (Methods is commonly recommended alongside it) and is assumed knowledge for most engineering and physical science degrees.
Honest note on coverage: ChalkBee has no Year 11-12 worksheets for this subject yet. This page is curriculum reference, how the national subject is organised, plus links to the ChalkBee Foundation to Year 10 content that genuinely leads into it.
The four units
Like every ACARA senior secondary subject, Physics runs across four units: Units 1 and 2 are usually taken in Year 11, Units 3 and 4 in Year 12, with achievement standards described for each pair.
Energy transfer and transformation across three domains: heating processes explained by the kinetic particle model and thermodynamics, radioactivity and nuclear reactions where mass converts to energy, and electrical circuits where charge carries and transforms energy.
Motion in one dimension described and predicted with Newton's laws, then wave behaviour in mechanical systems and sound. The unit closes with the wave model of light and the wide range of phenomena it explains.
The field idea unifies the unit: gravitational fields explain projectile and satellite motion, and electromagnetic interactions explain motors, generators and transformers. Students see how oscillating charges produce electromagnetic waves.
How the shortcomings of classical physics forced new theories: special relativity, the quantum theory of light and matter, and the Standard Model of particle physics. Students examine the evidence behind each revolution and its impact on technology and our picture of the universe.
How it is assessed
Set by each state authority, typically practical investigations plus an external exam with substantial quantitative problem solving. Confidence with algebra and functions matters; most states recommend taking Mathematical Methods alongside Physics.
Remember: ACARA publishes the national subject, but your state authority runs the actual course, assessment and certificate. See how each state and territory differs.
Where ChalkBee fits today
ChalkBee has no Year 11-12 Physics worksheets yet. The Year 9-10 physical sciences codes below cover the motion, energy and atomic ideas Units 1 and 2 build on.
Related Foundation to Year 10 content
- AC9S10U05: Newton's laws of motion
Year 10 Newtonian mechanics is the direct base for Unit 2.
- AC9S9U06: The atomic model and radioactivity
Year 9 radioactivity leads into Unit 1's nuclear physics.
- AC9S9U05: Conservation of energy
Energy conservation threads through every senior Physics unit.
Other Science senior subjects
Unit structure verified against the official ACARA senior secondary Physics pages (Australian Curriculum v8.4). Descriptions are paraphrased in our own words; the authoritative wording is ACARA's, and your state or territory authority's syllabus governs what is actually taught and assessed. Senior secondary is a live area of change, so confirm current details with your state authority before relying on them.