Year 9 Science


In this subject, students gain an insight into the wonder and complexity of God’s creation through studies in the areas of Microbiology, Light and Sound, Electricity, Chemical and Nuclear reactions.  The study of Science and Technology enables students to recognise the impact of Science on our everyday life.  Year 9 Science encourages students to use the abilities God has given them:  it extends students’ understanding of scientific concepts as well as developing their skills of scientific investigation.  The skills of critical thinking and analysis developed in science are useful in many areas of life while knowledge of God’s creation is essential to fully appreciate its intricacy.

Course Objectives

In Year 9, students consider the operation of systems at a range of scales. They explore ways in which the human body as a system responds to its external environment and the interdependencies between biotic and abiotic components of ecosystems. They are introduced to the notion of the atom as a system of protons, electrons and neutrons, and how this system can change through nuclear decay. They learn that matter can be rearranged through chemical change and that these changes play an important role in many systems. They are introduced to the concept of the conservation of matter and begin to develop a more sophisticated view of energy transfer. They begin to apply their understanding of energy and forces to global systems such as continental movement.


  • Biological sciences
    • Body balance and regulation
    • Microbes
  • Chemical sciences
    • Atoms and molecules
    • Acids and bases
    • Elements and compounds
    • Symbols, formulae and equations 
  • Earth and space sciences
    • Earthquakes 
  • Physical sciences
    • Electricity
    • Light and sound
  • Skills, Processes and Procedures
    • Design and carry out scientific investigations
    • Analyse data

Achievement standard

By the end of Year 9, students explain chemical processes and natural radioactivity in terms of atoms and energy transfers and describe examples of important chemical reactions. They describe models of energy transfer and apply these to explain phenomena. They explain global features and events in terms of geological processes and timescales. They analyse how biological systems function and respond to external changes with reference to interdependencies, energy transfers and flows of matter. They describe social and technological factors that have influenced scientific developments and predict how future applications of science and technology may affect people’s lives.

Students design questions that can be investigated using a range of inquiry skills. They design methods that include the control and accurate measurement of variables and systematic collection of data and describe how they considered ethics and safety. They analyse trends in data, identify relationships between variables and reveal inconsistencies in results. They analyse their methods and the quality of their data, and explain specific actions to improve the quality of their evidence. They evaluate others’ methods and explanations from a scientific perspective and use appropriate language and representations when communicating their findings and ideas to specific audiences.


Assessment tasks for each course include:

  • Practical Experiment Report Logbook
  • Research Assignments
  • Tests
  • Examinations