Grade 9 Science Worksheets

Learning Objectives

• Explain how alleles form genotypes and how genotypes determine phenotypes using dominant and recessive relationships
• Use genotype–phenotype reasoning to predict inheritance outcomes across generations
• Interpret heredity evidence (such as ratios and pedigrees) to support conclusions about dominant vs. recessive traits

Learning Objectives

• Explain how constraints limit design options and how criteria define success in engineering choices.
• Analyze trade-offs among cost, time, materials, safety, and reliability when comparing design alternatives.
• Justify a design decision by connecting performance goals to the weight given to criteria under given constraints.

Learning Objectives

• Explain how energy flows one direction through food chains and why some energy is lost at each trophic level
• Describe how matter cycles through organisms and the environment through processes such as photosynthesis and cellular respiration
• Interpret models and evidence (trophic levels, biomass changes, and atom rearrangement) to compare energy transfer and matter cycling

Learning Objectives

• Explain how valence electron behavior leads to atomic bond formation
• Differentiate ionic bonding from covalent bonding using electron transfer vs. electron sharing
• Predict material properties (melting point, conductivity, and strength) based on bond type and structure+ Show more

Learning Objectives

• Explain how disturbances can change ecosystem stability through altered species interactions and environmental conditions
• Describe how resilience, recovery rate, and ecological thresholds influence whether an ecosystem returns to its prior state
• Use long-term population and community data to distinguish gradual change from rapid ecosystem shifts+ Show more

Learning Objectives

• Explain how fission and fusion change atomic nuclei and release or absorb energy
• Describe the role of nuclear binding energy and mass–energy equivalence in nuclear reactions
• Compare the conditions under which fusion and fission typically occur+ Show more

Learning Objectives

• Explain how chemical reactions conserve matter by rearranging atoms rather than destroying them
• Describe how energy transfer during reactions is reflected in temperature and heat changes
• Differentiate exothermic and endothermic reactions using both energy and product outcomes

Learning Objectives

• Explain what fitness means in terms of survival and reproduction relative to other individuals
• Describe how natural selection depends on environmental conditions and heritable traits
• Use the idea of conditional fitness to predict how advantages can change when the environment changes+ Show more

Learning Objectives

• Explain how work depends on force, displacement, and the angle between them.
• Use the work–energy theorem to predict how net work changes kinetic energy.
• Determine whether an object speeds up or slows down based on the direction of net force relative to motion.

Learning Objectives

• Describe the processes involved in the transformation of igneous, sedimentary, and metamorphic rocks.
• Explain how tectonic settings influence rock formation and distribution.
• Identify the physical and chemical mechanisms that drive changes in Earth's rocks.+ Show more

Learning Objectives

• Explain how scientific knowledge depends on evidence, models, and measurement rather than a single method.
• Identify how technology, perspective, and uncertainty can influence scientific observations and conclusions.
• Describe why transparency, assumptions/limitations, and peer evaluation improve the reliability of scientific claims.+ Show more

Learning Objectives

• Explain how empirical evidence strengthens scientific claims using observable and measurable data.
• Identify how patterns in data guide scientific conclusions more than personal beliefs.
• Describe how evidence can corroborate, refine, or challenge earlier interpretations.+ Show more

Learning Objectives

• Explain how uncertainty arises from both random variation and systematic error in measurements.
• Use uncertainty and appropriate significant figures to communicate results in science.
• Judge whether two measurements are consistent by comparing them within reported uncertainty.

Learning Objectives

• Explain how inherited variation among individuals can affect survival and reproduction in a given environment
• Describe how differences in fitness can change the traits of a population over multiple generations
• Use key terms such as inherited traits, fitness, and adaptation to interpret natural selection in real-world examples

Learning Objectives

• Understand the conventions for representing forces in free-body diagrams.
• Identify and accurately depict common forces such as weight, normal force, tension, and friction.
• Apply free-body diagrams to analyze equilibrium and acceleration in various scenarios.+ Show more

Learning Objectives

• Understand the interconnected nature of metabolic pathways and enzyme catalysis.
• Differentiate between catabolic and anabolic pathways and their roles in energy management.
• Explain how energy regulation aligns pathway activity with cellular needs.+ Show more

Learning Objectives

• Explain how work quantifies energy transfer through force and distance.
• Describe how simple machines modify force and distance to improve work efficiency.
• Identify real-world examples of levers, pulleys, and inclined ramps in Alberta contexts.+ Show more

Learning Objectives

• Understand the core principles of population genetics, including allele frequency and genetic drift.
• Describe the assumptions of Hardy-Weinberg equilibrium and factors that disrupt it.
• Explain the effects of bottlenecks, founder effects, and gene flow on genetic diversity.+ Show more

Learning Objectives

• Understand the process of photosynthesis and its components.
• Identify inputs, outputs, and the steps involved in photosynthesis.
• Explain the role of chloroplasts, pigments, and electron transport in capturing light energy.+ Show more

Learning Objectives

• Understand the principles governing molecular shape based on electron pair repulsion.
• Identify common molecular geometries such as linear, trigonal planar, tetrahedral, and bent.
• Explain how molecular shape influences polarity and intermolecular forces.+ Show more

Learning Objectives

• Analyze societal and ethical dimensions of genetic technologies.
• Evaluate the responsibilities of stakeholders in genetic science.
• Discuss the role of policy, public dialogue, and ethical frameworks in responsible innovation.+ Show more

Learning Objectives

• Understand and describe the interconnected functions of organelle systems within cells.
• Identify the roles of energy transduction, lipid synthesis, detoxification, and transport vesicles.
• Explain how spatial organization of organelles supports cell growth, division, and responses to the environment.+ Show more

Learning Objectives

• Understand how mole relationships connect masses of reactants and products through balanced equations.
• Learn to calculate molar masses and convert between mass and amount of substance.
• Recognize the significance of coefficients in balanced chemical equations for mole ratios.+ Show more

Learning Objectives

• Identify major eukaryotic cell structures and their functions.
• Connect organelle structure and molecular composition to cellular tasks.
• Describe the role of specific organelles in different tissue types.+ Show more

Learning Objectives

• Describe the different types of seismic waves and their propagation characteristics.
• Explain how seismic wave travel times help us understand Earth’s interior structure.
• Identify how focal mechanisms reveal fault types and stress orientations during earthquakes.+ Show more

Learning Objectives

• Explain how molecules move across cell membranes through passive and active processes.
• Differentiate between diffusion, facilitated diffusion, osmosis, and active transport.
• Describe vesicular transport mechanisms such as endocytosis and exocytosis.+ Show more

Learning Objectives

• Describe the basic components of the cell membrane and their roles.
• Explain the fluid mosaic model and its significance in membrane function.
• Identify how membrane components influence permeability, signaling, and ion regulation.+ Show more

Learning Objectives

• Explain how energy flows through an ecosystem from producers to primary, secondary, and higher-level consumers.
• Describe how trophic levels represent an organism’s position in energy transfer.
• Compare linear energy chains with interconnected food webs and explain why food webs matter.+ Show more

Learning Objectives

• Understand the basic types of simple machines and their roles in modifying force and displacement.
• Explain the concepts of mechanical advantage, including ideal mechanical advantage and real-world constraints.
• Identify and compare different simple machines such as levers, pulleys, inclined planes, wedges, wheels and axles, and screws.+ Show more

Learning Objectives

• Explain the process of pulmonary gas exchange at the alveolar-capillary interface.
• Identify factors affecting oxygen uptake and carbon dioxide removal.
• Describe the mechanics of ventilation and the concept of dead space.+ Show more

Learning Objectives

• Understand how compounds are represented by chemical formulas and names.
• Explain the difference between ionic and covalent bonding and their effects on properties.
• Learn the law of definite composition and how it relates to compound stoichiometry.+ Show more

Learning Objectives

• Describe the processes of carbon and nitrogen cycles within ecosystems.
• Explain how energy flows through food webs and how trophic transfer influences biodiversity.
• Assess the effects of perturbations such as nutrient enrichment and habitat alteration on ecosystem function.+ Show more

Learning Objectives

• Understand the relationship between net force, mass, and acceleration.
• Explain how vector quantities of force and acceleration influence movement.
• Analyze the effect of changing forces and mass on an object's acceleration.+ Show more

Learning Objectives

• Explain how mechanical systems transfer energy through work, collisions, and friction.
• Describe how energy converts between kinetic, potential, and thermal forms in systems.
• Identify examples of energy transfer, such as braking a bicycle or compressing a spring.+ Show more

Learning Objectives

• Explain what albedo feedback is and how it influences climate change.
• Identify surface changes that affect Earth's reflectivity.
• Describe the effects of melting ice, snow, vegetation shifts, and cloud cover on albedo.+ Show more

Learning Objectives

• Define and explain the concept of inertia and its relation to mass.
• Describe real-world examples of inertia in everyday life.
• Understand how forces are required to change an object's state of motion due to inertia.+ Show more

Learning Objectives

• Understand how gene regulation influences phenotypic diversity
• Explain the roles of regulatory networks, timing, and epigenetics in development
• Analyze comparative developmental evidence for evolutionary processes+ Show more

Learning Objectives

• Understand the concept of element symbols and their formation.
• Identify common chemical formulas and interpret their meaning.
• Connect symbolic representations to real-world chemical substances.+ Show more

Learning Objectives

• Understand the basic principles of electric motors and generators.
• Identify different types of motors and their applications.
• Explain electromagnetic induction and how it is used in generators.+ Show more

Learning Objectives

• Understand how to interpret and apply coefficient ratios from balanced chemical equations.
• Calculate mass relationships among reactants and products in chemical reactions.
• Relate symbolic chemical equations to real-world mass measurements and conservation laws.+ Show more

Learning Objectives

• Understand the key mechanisms affecting energy efficiency in electrical systems.
• Identify strategies used to minimize energy losses and optimize system performance.
• Compare different equipment and design choices for improving energy efficiency.+ Show more

Learning Objectives

• Understand the different types of eclipses and how they occur
• Identify the celestial bodies involved in solar and lunar eclipses
• Explain the role of orbital inclination and paths of totality in eclipse visibility+ Show more

Learning Objectives

• Understand the fundamental role of enzymes as biological catalysts.
• Describe how enzyme structures relate to substrate specificity and catalytic efficiency.
• Explain the concepts of activation energy and transition states in enzymatic reactions.+ Show more

Learning Objectives

• Interpret earthquake waveforms, travel-time curves, and epicenter maps to analyze subsurface structures.
• Distinguish between P- and S-wave arrivals, waveform amplitudes, and frequency content to identify shallow versus deep seismic events.
• Connect seismicity patterns to tectonic environments and surface hazard phenomena such as tsunamis using instrument-based records.+ Show more

Learning Objectives

• Explain how homeostasis maintains stable internal conditions using feedback mechanisms
• Describe the components of a feedback loop (receptors, control center, effectors, and output)
• Distinguish negative feedback from positive feedback and predict their effects on a regulated variable+ Show more

Learning Objectives

• Explain the concept of force as an interaction capable of changing an object's motion.
• Identify and differentiate between contact and non-contact forces in real-world Alberta settings.
• Describe how magnitude and direction combine vectorially to represent forces.+ Show more

Learning Objectives

• Define ecosystem services and their categories: provisioning, regulating, cultural, and supporting.
• Explain the role of biodiversity in ecosystem service provision, such as pollination and water purification.
• Evaluate how human activities like land-use change and pollution impact ecosystem services.+ Show more

Learning Objectives

• Understand the concept of genetic drift and how it affects small populations.
• Identify different events that can lead to genetic drift such as bottlenecks and founder effects.
• Explain how chance events influence allele frequencies over time.+ Show more