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Science

Grade 9 De-streamed, following the Ontario curriculum.

  • 5 units
  • 37 lessons
  • 331 practice questions
  • 322 flashcards
  • 3 simulators
Start Unit 1Exam review →
Try oneSNC1W · Questions, Hypotheses and Fair Tests
A student tests how the height a ball is dropped from affects how high it bounces. What is the independent variable?

Units

Unit 1 · 6 lessons · ~12% of course

STEM Skills & Investigations

The skills you use in every science unit: planning fair tests, measuring and graphing data, judging sources and claims, designing and testing prototypes, using Python to model science, and working safely with WHMIS.

  1. 1Questions, Hypotheses and Fair Tests
  2. 2Measurement, Data Tables and Graphs
  3. 3Research and Scientific Literacy
  4. 4The Engineering Design Process
  5. 5Coding to Model Science
  6. 6Lab Safety and WHMIS
Unit 2 · 7 lessons · ~22% of course

Sustainable Ecosystems & Climate Change

How Earth's spheres interact, how energy flows and matter cycles through ecosystems, how photosynthesis and respiration fit together, what keeps ecosystems in balance, how human activity and climate change upset that balance, and the sustainable practices, including First Nations, Métis and Inuit knowledge, that help keep ecosystems healthy.

  1. 1Earth's Spheres and Ecosystem Components
  2. 2Energy Flow: Food Chains, Food Webs and Trophic Levels
  3. 3Photosynthesis and Cellular Respiration
  4. 4Cycling of Matter: Carbon, Nitrogen and Water Cycles
  5. 5Biodiversity, Succession and Ecosystem Sustainability
  6. 6Human Impacts on Ecosystems
  7. 7Climate Change and Ecosystems
Unit 3 · 8 lessons · ~22% of course

The Nature of Matter

What everything is made of: how to classify matter, tell physical from chemical changes, how scientists built the model of the atom, how the periodic table is organized, what chemical formulas mean, and how the chemicals in everyday products affect people and the planet.

  1. 1Pure Substances and Mixtures
  2. 2Physical and Chemical Properties and Changes
  3. 3How Models of the Atom Developed
  4. 4Protons, Neutrons, Electrons and Bohr-Rutherford Diagrams
  5. 5The Periodic Table
  6. 6Patterns in the Periodic Table
  7. 7Compounds and Chemical Formulas
  8. 8Chemistry, Consumer Products and Society
Unit 4 · 8 lessons · ~22% of course

Principles & Applications of Electricity

Static charge and why electrons move, conductors and safety, circuits and the meters that measure them, Ohm's law, series and parallel circuits, electrical energy, power, cost and efficiency, and how Ontario generates, stores and saves electricity.

  1. 1Static Electricity
  2. 2Conductors, Insulators and Grounding
  3. 3Current Electricity and Circuits
  4. 4Ohm's Law
  5. 5Series and Parallel Circuits
  6. 6Electrical Energy, Power and Cost
  7. 7Efficiency and Energy Transformations in Devices
  8. 8Generating Electricity Sustainably
Unit 5 · 8 lessons · ~22% of course

Space Exploration

The Sun and how it powers Earth, the Moon's phases, eclipses and tides, the planets and the vast distances between stars and galaxies, the evidence for how the universe and solar system began (including Indigenous sky knowledge), and how space technology helps life on Earth.

  1. 1The Sun
  2. 2How the Sun Drives Earth's Systems
  3. 3Moon Phases, Eclipses and Tides
  4. 4The Solar System
  5. 5Distances and Scale in Space
  6. 6Stars, Galaxies and the Universe
  7. 7Origin and Evolution of the Universe and Solar System
  8. 8Space Exploration and Technology

Simulators

Simulators for every course →
SNC1W
Atom Builder

Add and remove protons, neutrons and electrons to build any atom or ion from hydrogen to calcium, and watch its Bohr-Rutherford diagram, mass number, charge and isotope stability update.

Used in 1 lesson
SNC1W
Carbon Cycle Lab

Set fossil-fuel burning, deforestation, tree planting and how strongly oceans and land absorb CO₂, then watch atmospheric CO₂ change from 2025 to 2100 in a simple model of the carbon cycle.

Used in 1 lesson
SNC1W
Moon Phase Lab

Move the Moon around its orbit to see its phase from Earth, the tidal bulges that make spring and neap tides, and why eclipses happen only when a new or full moon is near a node.

Used in 1 lesson