Australia · ACARA Content Descriptions
Year 9 Science
Students explore the interconnected nature of biological, chemical, and physical systems. This course emphasizes evidence-based modeling of atomic structures, plate tectonics, and physiological regulation to explain how matter and energy transform the world.
01Control and Coordination
An investigation into how multicellular organisms respond to their environment through the nervous and endocrine systems.
Students will differentiate between various biological systems and their roles in maintaining life.
Students will explore the hierarchical organization of life from cells to organ systems.
Examining the structure of neurons and their specialized functions in transmitting electrical signals.
Investigating how the nervous system uses electrical and chemical signals to send messages quickly around the body.
Examining the pathway of reflex arcs in response to external stimuli and their adaptive significance.
Exploring the major regions of the brain and their specialized roles in controlling bodily functions and cognition.
Exploring how glands produce chemical messengers (hormones) to regulate long-term growth and homeostasis.
Students will identify key endocrine glands and the hormones they produce, understanding their general functions.
Understanding the concept of homeostasis as the body's ability to maintain a stable internal environment in response to external changes, focusing on simple examples.
Students will investigate how negative and positive feedback loops regulate hormone secretion and maintain homeostasis.
Classifying different types of pathogens (bacteria, viruses, fungi, parasites) and their modes of transmission.
Investigating the body's non-specific physical and chemical barriers against pathogens.
02Atomic Architecture
Developing models of atomic structure to explain the properties of elements and the nature of radioactivity.
Mapping the evolution of the atomic model from solid spheres to the proton-neutron-electron configuration.
Examining Rutherford's groundbreaking experiment and its implications for the nuclear model of the atom.
Understanding the properties and locations of protons, neutrons, and electrons within an atom.
Students will define and calculate atomic number and mass number, understanding their significance.
Exploring the Bohr model and the arrangement of electrons in energy shells around the nucleus.
Understanding the organization of the periodic table based on atomic number and electron configuration.
Students will classify elements based on their properties and position on the periodic table.
Understanding that isotopes are atoms of the same element with the same number of protons but different numbers of neutrons, resulting in different mass numbers. Explores how isotopic abundance determines average atomic mass.
Investigating the different types of radioactive decay and the particles/energy emitted.
Understanding the concept of half-life and its application in dating ancient artifacts and geological formations.
Introducing the concept of nuclear energy as a powerful energy source and discussing its general applications and considerations.
Students will differentiate between nuclear fission and fusion, understanding their energy release.
03Chemical Transformations
Investigating how matter rearranges during chemical reactions and the role of energy in these changes.
Defining chemical reactions and identifying evidence of chemical change versus physical change.
Students will understand that matter is conserved in chemical reactions.
Using symbolic equations to demonstrate that matter is neither created nor destroyed in reactions.
Classifying chemical reactions into common categories: synthesis, decomposition, single replacement, and double replacement.
Investigating how energy is absorbed or released during chemical reactions.
Students will explore how temperature, concentration, surface area, and catalysts influence reaction speed.
Defining oxidation as a chemical reaction involving oxygen, such as combustion and rusting.
Comparing rapid and slow oxidation reactions and their impact on energy release.
Investigating slow oxidation reactions like corrosion and their environmental and economic impacts.
Exploring the characteristic properties of corrosive substances and their common uses.
Understanding the pH scale as a measure of acidity/alkalinity and using indicators to determine pH.
Investigating the reactions that occur between acids and bases to form salt and water.
04Shifting Continents
Analyzing the theory of plate tectonics and the geological events that shape the Earth's surface.
Exploring the layers of the Earth (crust, mantle, core) and their composition and properties.
Examining the evidence for continental drift and the initial resistance to Alfred Wegener's theory.
Investigating the evidence from the ocean floor that supported and expanded Wegener's ideas.
Understanding the theory of plate tectonics and the mechanisms of mantle convection.
Investigating how plates move apart, leading to seafloor spreading and rift valleys.
Exploring how plates collide, resulting in subduction zones, mountain ranges, and trenches.
Understanding how plates slide past each other, causing significant seismic activity.
Investigating how interactions at plate boundaries lead to sudden energy releases.
Exploring the formation of volcanoes and the different types of eruptions.
Analyzing the risks associated with earthquakes, volcanoes, and tsunamis, and strategies for mitigation.
05Energy on the Move
Exploring the transfer of energy through waves, specifically focusing on the properties of sound and light.
Defining waves as energy transfer mechanisms and differentiating between transverse and longitudinal waves.
Understanding how longitudinal waves travel through mediums and how we perceive pitch and volume.
Investigating how sound waves interact with their environment, leading to phenomena like echoes.
Exploring the structure and function of the human ear in perceiving sound.
Investigating reflection, refraction, and the electromagnetic spectrum.
Exploring the different regions of the electromagnetic spectrum, from radio waves to gamma rays.
Understanding how light interacts with surfaces and changes direction when passing through different mediums.
06Electrical Circuits
Applying physics principles to build and analyze series and parallel circuits using voltage, current, and resistance.
Defining electric charge and exploring phenomena related to static electricity.
Defining current and voltage and exploring how energy is transferred in a closed loop.
Applying Ohm's Law to calculate relationships between voltage, current, and resistance.
Building and analyzing series circuits to understand current, voltage, and resistance distribution.
Building and analyzing parallel circuits to understand current, voltage, and resistance distribution.
Identifying common circuit components and their schematic symbols for circuit diagrams.