Grade 9 Science Worksheets

Learning Objectives

• Understand the purpose and components of free body diagrams.
• Learn to sketch vectors representing forces acting on an object.
• Calculate net force by vector addition of forces in free body diagrams.+ Show more

Learning Objectives

• Explain how waves transfer energy and, in many cases, information without transporting matter overall
• Describe the relationships between frequency, wavelength, amplitude, and observable wave behavior
• Use wave property definitions to interpret wave effects in real-world contexts such as sound, sensors, and communication

Learning Objectives

• Explain how chemical reactions transform reactants into products by breaking and forming chemical bonds
• Use chemical formulas, state symbols, and stoichiometric coefficients to represent reactions accurately
• Interpret symbolic reaction descriptions, including relative amounts and energy changes

Learning Objectives

• Explain how a device can be modeled as a system with interacting parts.
• Map a device’s inputs, outputs, energy transfers, and material flow using systems thinking.
• Identify constraints and criteria (such as compatibility) that affect reliability and performance.+ Show more

Learning Objectives

• Describe the biological organization hierarchy from molecules to organisms
• Explain emergent properties and why higher levels can function differently than lower levels
• Use examples to connect tissue coordination, organ function, and whole-organism outcomes

Learning Objectives

• Define mechanical work as the scalar product of force and displacement and explain when work is zero
• Describe different forms of energy (kinetic and potential) and how energy changes during motion
• Use units and relationships to calculate work and connect work to changes in energy+ Show more

Learning Objectives

• Identify diagnostic physical and chemical properties of common rock-forming minerals
• Explain how crystal structure and atomic bonding relate to hardness, cleavage, lustre, streak, and specific gravity
• Connect mineral composition to formation environments and predict stability under changing temperature and pressure+ Show more

Learning Objectives

• Identify the correct forces acting on an isolated object and represent them on a free-body diagram using standard vector conventions.
• Choose an appropriate coordinate system and determine the component form needed to compute net force.
• Analyze conditions for equilibrium (net force equals zero) and for acceleration using Newton’s second law.

Learning Objectives

• Describe how glycolysis, the citric acid cycle, and oxidative phosphorylation work together to produce ATP
• Explain how mitochondrial structure supports a proton gradient and ATP synthase activity
• Compare aerobic and anaerobic pathways and relate them to tissue energy demands+ Show more

Learning Objectives

• Explain apparent diurnal motion of celestial objects as a consequence of Earth’s rotation from an Earth-based viewpoint.
• Describe how Earth’s revolution produces apparent changes in the night sky across seasons.
• Use celestial coordinate ideas (altitude, azimuth, rising/setting) to predict how objects appear to move.+ Show more

Learning Objectives

• Explain how gravity provides the centripetal force needed for curved orbital motion.
• Describe how orbital speed and distance from a star change during a planet’s revolution.
• Use observed patterns in the sky to connect recurring positions to orbital periods.

Learning Objectives

• Explain how plate convergence and continental collision can fold, fault, and uplift Earth’s crust to form mountain ranges.
• Identify key processes involved in orogeny, including thrust faulting, crustal shortening, magmatic intrusion, and isostatic rebound.
• Use evidence from rock types, structures, and timing to interpret tectonic history and past plate motions.+ Show more

Learning Objectives

• Explain how an iteration loop uses test evidence to improve a design through repeated revisions.
• Describe how design cycle decisions can include changing dimensions, materials, alignment, or component interactions.
• Evaluate reliability and safety considerations that grow more informed after each testing round.

Learning Objectives

• Explain gas pressure, volume, and temperature qualitatively using the particle model
• Describe how microscopic particle motion leads to observable changes in pressure and flow
• Use everyday examples (heated air, confined gas, weather balloons, respiration) to connect macroscopic observations to particle collisions and kinetic energy

Learning Objectives

• Explain how a limiting reactant determines the maximum amount of product in a chemical reaction.
• Calculate theoretical yield using balanced mole ratios and molar masses.
• Compare theoretical and actual yield using percent yield, and interpret efficiency.+ Show more

Learning Objectives

• Use symptom descriptions, circuit topology, and measurement data to infer likely electrical fault types.
• Differentiate between open circuits, short circuits, and component degradation using observable instrument readings.
• Justify diagnostic conclusions using evidence-based reasoning and protection behavior.

Learning Objectives

• Use constant-acceleration equations to relate displacement, time, initial velocity, final velocity, and acceleration.
• Apply an appropriate sign convention to motion problems (e.g., slowing down, falling objects).
• Substitute given values with correct units to predict displacement and velocity outcomes.

Learning Objectives

• Differentiate heterogeneous mixtures from homogeneous solutions based on uniformity
• Identify and describe the roles of solute, solvent, and concentration in solutions
• Explain how physical properties guide separation methods without chemical change+ Show more

Learning Objectives

• Interpret displacement–time, velocity–time, and acceleration–time graphs using slope and area
• Analyze motion scenarios to determine how changing acceleration appears on curved graph segments
• Use appropriate axis labels and graphing conventions to compare different motion profiles

Learning Objectives

• Explain how energy profiles represent activation energy, transition states, and energy changes during chemical reactions.
• Distinguish exothermic and endothermic reactions using the sign of ΔH.
• Interpret reaction-coordinate diagrams to describe energy flow between a system and its surroundings.

Learning Objectives

• Explain how grounding and overcurrent protection reduce electrical shock and fire risk.
• Interpret common electrical safety labels to identify protective features and installation requirements.
• Describe how insulation, approved equipment, and environmental conditions affect electrical safety in Alberta.

Learning Objectives

• Explain how work relates to force and distance in the direction of motion
• Compare simple machines using the ideas of input force, output force, and mechanical advantage
• Evaluate energy trade-offs, including efficiency and the effects of friction

Learning Objectives

• Explain how wind and solar variability affects grid operation and dispatch decisions
• Describe roles of forecasting, storage, and reserves in balancing supply and demand
• Evaluate how renewable integration impacts planning, reliability, economics, and environmental outcomes

Learning Objectives

• Explain how genes (DNA segments) determine protein structure and function
• Describe transcription and translation as processes that link DNA to protein production
• Interpret how promoter and regulatory elements control gene expression and phenotype+ Show more

Learning Objectives

• Explain how oceanic lithosphere subducts and how this creates trenches and volcanic arcs
• Describe the role of slab dehydration and melting in arc volcanism
• Interpret how subduction-zone processes can generate earthquakes, tsunamis, and major landforms

Learning Objectives

• Distinguish ionic, covalent, and metallic bonding using electron interactions
• Predict properties of substances (e.g., melting point, conductivity, structure) based on bonding type
• Explain how bonding influences real-world materials and applications, including those relevant to Alberta

Learning Objectives

• Explain how net force is determined by vector addition of all forces acting on an object, including direction.
• Predict motion changes (acceleration, deceleration, and equilibrium) from the net force and force direction.
• Apply friction and air resistance as opposing forces to analyze realistic Alberta scenarios.

Learning Objectives

• Classify chemical reactions as synthesis, decomposition, single displacement, double displacement, or combustion based on reactant/product patterns.
• Predict likely products by applying reaction-category rules and using the idea that charges and atoms must be conserved.
• Explain how oxidation is involved in combustion and relate reaction categories to electron movement (redox considerations).

Learning Objectives

• Explain natural selection, including heritable traits, selective pressure, and fitness
• Use Alberta examples to describe how adaptations can improve survival or reproduction
• Compare natural selection with artificial selection and describe how each changes populations over generations+ Show more

Learning Objectives

• Explain that power is the rate of energy transfer and identify common power units.
• Define efficiency as the fraction of input energy converted to useful work.
• Analyze how input power, output power, and energy losses affect performance in real systems.

Learning Objectives

• Describe how the particle model explains solids, liquids, and gases using particle spacing and motion
• Use the particle model to explain diffusion, pressure, and changes in temperature
• Relate kinetic energy and particle collisions to observable macroscopic effects

Learning Objectives

• Understand the concept of measurement uncertainty and its sources.
• Identify different sources of error in scientific measurements.
• Evaluate how uncertainty affects the confidence in experimental results.+ Show more

Learning Objectives

• Understand how vectors represent forces including magnitude and direction.
• Learn how to resolve forces into components both graphically and analytically.
• Calculate the resultant force using vector addition methods.+ Show more

Learning Objectives

• Understand how uncertainty is represented in data displays like graphs and tables.
• Interpret error bars, uncertainty bands, and annotated ranges to assess data credibility.
• Evaluate whether observed differences are meaningful considering overlapping uncertainties.+ Show more

Learning Objectives

• Understand the principle of conservation of matter during chemical reactions.
• Explain how atoms rearrange without being created or destroyed.
• Interpret chemical equations in terms of atom counts for each element.+ Show more

Learning Objectives

• Understand the primary kinematic equations for constant acceleration motion.
• Apply equations to analyze vertical free-fall and projectile motion scenarios.
• Recognize sign conventions and component-wise treatment of motion under gravity.+ Show more

Learning Objectives

• Define physical properties and understand their significance in science.
• Identify examples of physical properties such as density, melting point, and conductivity.
• Differentiate between intensive and extensive properties.+ Show more

Learning Objectives

• Understand the mechanisms of hormonal regulation and feedback in the human endocrine system.
• Analyze how hormones like insulin, glucagon, and thyroid hormones maintain homeostasis.
• Describe hormone synthesis, transport, receptor actions, and cellular effects including gene expression and enzyme activity.+ Show more

Learning Objectives

• Understand how simple machines combine within compound machines to multiply force and displacement.
• Calculate overall mechanical advantage by analyzing force ratios and displacement relationships in systems.
• Distinguish between ideal and actual mechanical advantage, especially considering energy losses such as friction.+ Show more

Learning Objectives

• Understand the concept of work as the dot product of force and displacement, including the angle between them.
• Differentiate between work with constant and variable forces.
• Apply area-under-curve methods to estimate work in variable-force scenarios.+ Show more

Learning Objectives

• Understand how individual forces combine to produce net force.
• Identify the effects of opposing forces on motion and acceleration.
• Analyze scenarios involving unbalanced forces and determine the resulting motion.+ Show more

Learning Objectives

• Understand the principle of conservation of matter in chemical reactions.
• Learn how to balance simple chemical equations by matching atom counts.
• Explain the significance of coefficients in representing particle ratios.+ Show more

Learning Objectives

• Understand how models are used to represent and explain scientific phenomena.
• Analyze quantitative data to evaluate scientific explanations.
• Interpret patterns and relationships in measurements related to motion, energy, forces, and waves.+ Show more

Learning Objectives

• Understand the concepts of heat transfer and work as energy pathways.
• Differentiate between heat transfer and work in physical and chemical changes.
• Explain how energy flows between a system and its surroundings through heat and work.

Learning Objectives

• Understand how inheritance patterns influence trait prediction across multiple generations.
• Learn to analyze parental allele combinations and predict offspring phenotypes.
• Recognize how dominant and recessive traits affect observable characteristics.+ Show more

Learning Objectives

• Describe the roles of key organelle systems in cell function.
• Explain how organelle networks coordinate cellular processes such as metabolism and maintenance.
• Identify interactions between organelles like chloroplasts, mitochondria, ER, and peroxisomes.+ Show more

Learning Objectives

• Describe the physical barriers that protect the body against pathogens.
• Explain the roles of cellular mediators like macrophages and lymphocytes in immune response.
• Identify the mechanisms of inflammation and immune memory formation.+ Show more

Learning Objectives

• Explain the distinctions between contact and non-contact forces.
• Identify and describe examples of fundamental forces such as gravity, friction, tension, normal force, and electromagnetic interactions.
• Describe the magnitude, direction, and point of application of different forces in various contexts.+ Show more