Year 9 Science in the Australian Curriculum

AC9S9U01

compare the role of body systems in regulating and coordinating the body’s response to a stimulus, and describe the operation of a negative feedback mechanism

AC9S9U02

describe the form and function of reproductive cells and organs in animals and plants, and analyse how the processes of sexual and asexual reproduction enable survival of the species

AC9S9U03

represent the carbon cycle and examine how key processes including combustion, photosynthesis and respiration rely on interactions between Earth’s spheres (the geosphere, biosphere, hydrosphere and atmosphere)

AC9S9U04

use wave and particle models to describe energy transfer through different mediums and examine the usefulness of each model for explaining phenomena

AC9S9U05

apply the law of conservation of energy to analyse system efficiency in terms of energy inputs, outputs, transfers and transformations

AC9S9U06

explain how the model of the atom changed following the discovery of electrons, protons and neutrons and describe how natural radioactive decay results in stable atoms

AC9S9U07

model the rearrangement of atoms in chemical reactions using a range of representations, including word and simple balanced chemical equations, and use these to demonstrate the law of conservation of mass

AC9S9H01

explain how scientific knowledge is validated and refined, including the role of publication and peer review

AC9S9H02

investigate how advances in technologies enable advances in science, and how science has contributed to developments in technologies and engineering

AC9S9H03

analyse the key factors that contribute to science knowledge and practices being adopted more broadly by society

AC9S9H04

examine how the values and needs of society influence the focus of scientific research

AC9S9I01

develop investigable questions, reasoned predictions and hypotheses to test relationships and develop explanatory models

AC9S9I02

plan and conduct valid, reproducible investigations to answer questions and test hypotheses, including identifying and controlling for possible sources of error and, as appropriate, developing and following risk assessments, considering ethical issues, and addressing key considerations regarding heritage sites and artefacts on Country/Place

AC9S9I03

select and use equipment to generate and record data with precision to obtain useful sample sizes and replicable data, using digital tools as appropriate

AC9S9I04

select and construct appropriate representations, including tables, graphs, descriptive statistics, models and mathematical relationships, to organise and process data and information

AC9S9I05

analyse and connect a variety of data and information to identify and explain patterns, trends, relationships and anomalies

AC9S9I06

assess the validity and reproducibility of methods and evaluate the validity of conclusions and claims, including by identifying assumptions, conflicting evidence and areas of uncertainty

AC9S9I07

construct arguments based on analysis of a variety of evidence to support conclusions or evaluate claims, and consider any ethical issues and cultural protocols associated with accessing, using or citing secondary data or information

AC9S9I08

write and create texts to communicate ideas, findings and arguments effectively for identified purposes and audiences, including selection of appropriate content, language and text features, using digital tools as appropriate