Grade 9 Science Worksheets

Learning Objectives

• Explain the flow of energy through different trophic levels in an ecosystem.
• Describe the structure of food webs and the concept of biomass distribution.
• Analyze how energy transfer efficiency impacts ecosystem productivity and stability.+ Show more

Learning Objectives

• Understand the process of electron transport chains in mitochondria and chloroplasts.
• Describe how redox reactions couple with proton pumping to generate ATP.
• Explain the role of membrane integrity and oxygen availability in ATP synthesis efficiency.+ Show more

Learning Objectives

• Calculate thermal energy transferred using q = m c ΔT
• Interpret positive and negative q values for heat flow
• Apply conservation of energy to closed heat-transfer systems+ Show more

Learning Objectives

• Identify and describe the functions of basic cell organelles.
• Understand how nucleic acid sequences determine amino acid chains.
• Connect molecular coding and protein folding to organelle architecture.+ Show more

Learning Objectives

• Understand the key features that distinguish elements, compounds, and mixtures.
• Learn how to represent elements and compounds using symbols and formulas.
• Identify and classify substances as pure substances or mixtures based on their composition.+ Show more

Learning Objectives

• Explain the particulate (particle) model of matter using particle motion, spacing, and collisions
• Use the particulate model to predict diffusion, pressure, and temperature changes in solids, liquids, and gases
• Relate everyday and Alberta examples (e.g., salt on roads, odour spread from farms) to particle-level processes

Learning Objectives

• Define and distinguish between speed and velocity
• Understand basic units of motion measurement
• Apply real-world examples of speed and velocity+ Show more

Learning Objectives

• Identify key components of ecosystems and their interactions.
• Understand trophic levels and food chain relationships.
• Explain the concepts of resilience, regime shifts, and thresholds in ecosystems.+ Show more

Learning Objectives

• Understand the roles and differences of innate and adaptive immune responses.
• Identify how immune cells communicate with other body systems.
• Describe how the immune system supports homeostasis and tissue repair.+ Show more

Learning Objectives

• Explain how historical frequency supports hazard occurrence estimates
• Interpret return period ideas for earthquakes and storms
• Analyze how exposure and vulnerability influence risk+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Understand the concept of organelle systems and their role in cell function.
• Identify different organelle interactions, such as energy transfer, lipid synthesis, and detoxification.
• Explain how organelles cooperate to support cell growth, division, and environmental response.+ Show more

Learning Objectives

• Understand the concept of albedo feedback and its effect on climate change.
• Identify factors that influence surface reflectivity and regional warming.
• Analyze how melting ice, snow, vegetation shifts, and cloud cover contribute to feedback mechanisms.+ Show more

Learning Objectives

• Explain energy transfer during common phase changes
• Interpret temperature plateaus on heating and cooling curves
• Describe latent heat during phase transitions+ Show more

Learning Objectives

• Calculate total momentum before and after a two-body interaction
• Determine unknown velocities using conservation of linear momentum
• Distinguish elastic and inelastic collisions using kinetic energy+ Show more

Learning Objectives

• Identify the main idea of how the circulatory system transports materials.
• Describe key roles of blood flow in delivering oxygen and nutrients and removing wastes.

Learning Objectives

• Apply kinematics, net-force reasoning, and energy considerations together to explain complex motion.
• Use free-body diagrams and Newton’s 2nd law to predict acceleration for real-world scenarios.
• Use energy (work and the work-energy theorem) to check or refine predictions such as stopping distance.+ Show more

Learning Objectives

• Calculate mechanical work using the relationship W = F d cos(θ) for forces applied at an angle.
• Differentiate work done by constant forces versus work done by variable forces.
• Model variable-force work using the area under a force–distance curve.

Learning Objectives

• Explain how physical barriers, innate immune cells, and adaptive immune responses protect the body from pathogens and environmental insults.
• Compare antigen recognition in innate versus adaptive immunity and describe how antibody-mediated responses contribute to protection.
• Describe how inflammation and immune memory help the body respond to threats, and how nutrition, stress, and exposures can change immune competence.

Learning Objectives

• Explain how the relative positions of the Sun, Earth, and Moon create the sequence of lunar phases
• Describe how the synodic month controls the regular timing of repeating lunar phases
• Use the fraction of the Moon’s disk illuminated from Earth to predict which phase is visible

Learning Objectives

• Explain how relative positions of the Sun, Moon, and Earth determine Moon phases.
• Describe why eclipses require specific alignment and do not occur every month.
• Use viewing geometry and orbital tilt to predict when eclipses are more likely.

Learning Objectives

• Understand the geometric relationship between the Sun, Earth, and Moon during different lunar phases.
• Identify the sequence and appearance of lunar phases over a synodic month.
• Explain how lunar phases influence nocturnal illumination and tidal patterns.+ Show more

Learning Objectives

• Understand the concepts of power and efficiency in mechanical systems
• Learn how to calculate power and efficiency
• Analyze how energy transfer affects machine performance

Learning Objectives

• Explain how environmental exposures and lifestyle factors can contribute to chronic disease through biological mechanisms.
• Describe how dose–response relationships and vulnerability factors affect health outcomes over time.
• Compare epidemiological evidence with mechanistic evidence when evaluating health risks from pollutants and toxicants.

Learning Objectives

• Understand the fundamentals of decision modeling and scenario analysis.
• Explore how systems approach integrates economic, environmental, and social factors.
• Evaluate trade-offs involved in greenhouse gas reduction and sustainability.+ Show more

Learning Objectives

• Identify different forms of energy and how they transfer between objects
• Understand the concept of energy conservation in a system
• Interpret energy diagrams and models illustrating energy changes+ Show more

Learning Objectives

• Calculate the center of mass for composite rigid bodies using given component masses and positions.
• Apply moment and net torque conditions to determine static equilibrium for objects with multiple forces.
• Analyze stability using tipping thresholds by comparing the center of mass relative to the support base.

Learning Objectives

• Explain how electric and magnetic field lines represent direction and relative strength.
• Predict the force direction on a moving charge using the Lorentz force relationship for magnetic fields.
• Use vector superposition ideas to describe how fields combine.+ Show more

Learning Objectives

• Explain how reproductive isolation prevents gene flow and enables speciation
• Compare allopatric and sympatric speciation models using examples
• Describe how genetic divergence, hybrid zones, and polyploidy contribute to new species

Learning Objectives

• Identify evidence from fossils, anatomy, molecules, and biogeography
• Explain how stratigraphy and radiometric dating place evidence in time
• Describe how homologous structures support common ancestry+ Show more

Learning Objectives

• Understand the relationships between Earth's, Moon's, and Sun's orbital patterns and effects.
• Identify phenomena such as seasons, lunar phases, and tides resulting from orbital interactions.
• Describe how Earth's axial tilt and orbital eccentricity influence climate cycles.+ Show more

Learning Objectives

• Explain how friction and drag oppose relative motion and affect acceleration.
• Use the idea that friction depends on normal force and surface conditions.
• Describe how drag depends on an object’s speed and the surrounding fluid.+ Show more

Learning Objectives

• Understand the role of sex chromosomes in inheritance.
• Explain mechanisms of sex-linked trait expression in mammals.
• Distinguish between sex determination systems and inheritance patterns.+ Show more

Learning Objectives

• Explain how Kepler’s laws describe orbital shape, area, and period
• Apply Newton’s gravity law to reason about orbital speed changes
• Relate orbital period to semi-major axis for the same central mass+ Show more

Learning Objectives

• Explain how runoff, discharge, and sediment load influence erosion, transport, and deposition over time
• Interpret hydrologic data (discharge records and sediment measurements) to make evidence-based claims about channel or shoreline change
• Describe how different time scales (storms vs. long-term evolution) affect landscape form

Learning Objectives

• Describe the interactions among the geosphere, hydrosphere, atmosphere, and biosphere using models and diagrams.
• Explain material and energy exchanges such as nutrient transport, gas fluxes, and ocean upwelling effects.
• Use spatial schematics and causal chains to interpret coupled environmental phenomena and feedbacks.

Learning Objectives

• Distinguish correlation from evidence needed to support causation
• Explain how oxidative stress damages cellular components
• Describe how chronic inflammation can affect health over time+ Show more

Learning Objectives

• Understand the concept of ionic bonding and electron transfer
• Identify properties of ionic compounds versus covalent compounds
• Recognize examples of ionic bonds in real-world materials+ Show more

Learning Objectives

• Compare sexual and asexual reproduction in terms of how offspring are produced and how variation changes.
• Explain how specific asexual mechanisms (budding, binary fission, and vegetative cloning) affect genetic similarity in offspring.
• Connect reproductive modes to ecological trade-offs such as population growth rate and genetic diversity.

Learning Objectives

• Explain how coefficients in a chemical equation represent relative particle amounts and help maintain conservation of matter.
• Balance simple chemical equations by ensuring the number of atoms of each element matches on both sides.
• Interpret how changing one reactant amount can affect the possible amounts of products using the balanced equation.

Learning Objectives

• Explain how a net force changes an object's velocity over time.
• Determine whether forces are balanced or unbalanced from a motion description.
• Identify the direction of the net force and resulting acceleration.+ Show more

Learning Objectives

• Understand how soil conservation, irrigation, and watershed management contribute to land sustainability.
• Identify indicators of ecosystem resilience, nutrient cycling, and productivity under land-use scenarios.
• Evaluate trade-offs among food production, biodiversity, and watershed health in land management practices.+ Show more

Learning Objectives

• State the conservation of mass principle for closed chemical systems
• Compare total reactant mass with total product mass
• Explain how atoms rearrange during chemical reactions+ Show more

Learning Objectives

• Identify classical simple machines and their mechanical functions
• Calculate ideal mechanical advantage using force relationships
• Relate input distance to output distance in ideal machines+ Show more

Learning Objectives

• Describe the processes involved in Earth's water cycle, including evaporation, condensation, and precipitation.
• Explain how water moves through various reservoirs such as the atmosphere, surface, and groundwater.
• Understand the importance of water cycle processes in influencing climate and weather patterns.+ Show more

Learning Objectives

• Define natural selection and explain its role in evolution.
• Identify key traits that can influence an organism's survival.
• Understand how certain traits become more common over generations.+ Show more

Learning Objectives

• Identify traits influenced by multiple genes
• Understand phenomena like epistasis and pleiotropy
• Recognize how environment affects genetic traits

Learning Objectives

• Understand the different types of chemical reactions, focusing on synthesis reactions.
• Identify synthesis reactions from textual descriptions.
• Recognize the characteristic reactant patterns and products of synthesis reactions.