Grade 12 Science Worksheets

Learning Objectives

• Explain how ecosystems cycle matter while transferring energy in a one-directional flow through living systems.
• Describe the roles of producers, consumers, and decomposers in nutrient cycling and energy transformation.
• Use food webs to predict how trophic structure and energy efficiency affect biomass patterns at higher trophic levels.+ Show more

Learning Objectives

• Explain how natural selection leads to changes in allele frequencies over generations
• Distinguish adaptation from genetic drift and describe when each process is most influential
• Interpret evidence for evolution using observations, comparative anatomy, and molecular data+ Show more

Learning Objectives

• Explain energy conservation in a closed system using heat transfer and work as mechanisms of energy exchange.
• Distinguish between energy changing form (kinetic, thermal, mechanical) and energy transferring between systems.
• Use before-and-after quantitative reasoning (signs and trends in temperature and motion) to track energy changes.

Learning Objectives

• Explain how electron structure (valence electrons and effective nuclear charge) drives periodic trends across periods and down groups.
• Predict how atomic radius, ionization energy, electronegativity, and reactivity change based on an element’s position in the periodic table.
• Connect predicted trends to typical ion formation and common behaviors in real-world materials.

Learning Objectives

• Construct and justify conceptual and quantitative models for real-world systems using parameters and assumptions.
• Estimate model parameters from data and validate model predictions against empirical measurements.
• Use dimensional analysis, scaling, and sensitivity testing to improve model robustness and interpret simulation results.+ Show more

Learning Objectives

• Explain key principles of scientific ethics, including research integrity, informed consent, data stewardship, and conflicts of interest
• Apply ethical norms to realistic research scenarios, including decisions about reproducibility, peer review, and institutional review
• Evaluate how misconduct and transparent correction processes affect scientific trust and public outcomes

Learning Objectives

• Explain how activation energy relates to the energy difference between reactants and the transition-state configuration
• Compare reaction pathways with and without catalysts using energy-profile concepts
• Evaluate how catalysts change reaction rate while leaving the overall energy change (heat signature) unchanged+ Show more

Learning Objectives

• Explain how base pairing in DNA provides a stable sequence that can be copied into mRNA and translated into proteins.
• Describe the roles of transcription and translation in converting nucleotide information into amino acid sequences.
• Connect changes in DNA sequence (mutations) to changes in protein structure and function, and ultimately to traits.

Learning Objectives

• Use ray diagrams and the law of reflection to predict light directions at surfaces.
• Apply Snell’s law to determine refraction angles and interpret physical bending of rays.
• Use thin-lens and magnification equations to predict image position and orientation.+ Show more

Learning Objectives

• Explain how natural selection, genetic drift, gene flow, and mutation generate biological diversity at the population level
• Interpret evidence for evolution from paleontology, comparative anatomy, and molecular homology
• Use population-level ideas (fitness, selection pressures, adaptive landscapes) to predict changes in allele frequencies

Learning Objectives

• Explain conservation of energy using system and surroundings during heat transfer processes.
• Distinguish energy released from energy absorbed and relate both to temperature changes.
• Apply calorimetry reasoning (heat gained/lost and specific heat) to predict net energy balance.

Learning Objectives

• Explain chemical equilibrium in terms of equal forward and reverse reaction rates and constant equilibrium concentrations
• Use equilibrium constant expressions (Kc) and reaction quotient (Q) to predict the direction of shift
• Apply Le Chatelier’s principle to qualitatively predict how changes in concentration, pressure, or temperature affect equilibrium+ Show more

Learning Objectives

• Explain how energy is transformed and conserved as it moves through real systems such as power generation and buildings.
• Use energy-flow ideas to calculate and interpret efficiency and energy losses.
• Describe how energy accounting connects to environmental impacts and technology trade-offs in Alberta’s energy system.

Learning Objectives

• Explain how atomic packing and unit-cell geometry relate to the properties of ionic crystals, metallic lattices, and covalent networks.
• Use band theory ideas to describe how electron energy bands lead to conductivity and semiconducting behavior.
• Predict how crystal defects and impurities can change mechanical strength and electrical behavior.

Learning Objectives

• Explain how mass defect is connected to binding energy and energy release or absorption in nuclear processes using E = mc^2
• Use conservation of nucleon number (A) and charge (Z) to predict particles and products in nuclear decay and reactions
• Relate nuclear mass-energy changes to observable radiation and kinetic energy in decay chains, fission, and fusion

Learning Objectives

• Explain how ecological interactions influence population growth and carrying capacity in Alberta ecosystems.
• Describe trophic relationships and quantify energy transfer efficiencies across trophic levels.
• Connect nutrient cycling processes to ecosystem productivity and resilience.+ Show more

Learning Objectives

• Differentiate ionic, covalent, and metallic bonding using electron behavior.
• Predict macroscopic properties (melting point, conductivity, solubility) from bond type.
• Explain how bond energies relate to stability and observable physical behavior.

Learning Objectives

• Describe the molecular structure of DNA, including nucleotide components and antiparallel strands.
• Explain how phosphodiester backbones and hydrogen bonding contribute to DNA structural stability.
• Connect DNA molecular architecture to conserved patterns across organisms using Alberta examples.

Learning Objectives

• Explain how Alberta’s wind, solar, and bioenergy resources vary geographically and how that affects energy output
• Describe how conversion technologies and grid integration choices help manage intermittency and reliability
• Evaluate renewable systems using lifecycle metrics such as energy payback, greenhouse gas balance, and cumulative impacts

Learning Objectives

• Describe how historical atomic models (Dalton, Thomson, Rutherford, Bohr) evolved with new experimental evidence.
• Explain how electron structure and probabilistic orbitals relate to atomic mass and atomic behavior.
• Interpret isotope and radiation ideas in real-world contexts, including geological dating and uranium deposits.+ Show more

Learning Objectives

• Explain how the water cycle redistributes water through evaporation, condensation, precipitation, runoff, infiltration, groundwater flow, and storage.
• Analyze how temperature, land cover, and atmospheric circulation create variability in local water outcomes.
• Connect short-term weather patterns to longer-term climate impacts using reservoir and energy considerations.

Learning Objectives

• Explain how scientific discovery can progress to applied technologies through translational research, patenting, and technology transfer.
• Identify key roles of research funding, industry partnerships, and regulatory constraints in commercialization.
• Evaluate scaling challenges and select metrics for measuring innovation impact beyond publications.

Learning Objectives

• Interpret p-values, confidence intervals, and effect sizes as evidence and evaluate practical significance in scientific contexts.
• Assess regression assumptions using diagnostics such as residual plots and identify when model revisions are needed.
• Select and justify inferential methods by connecting assumptions, uncertainty, and limitations to conclusions.

Learning Objectives

• Explain how vectors, restriction enzymes, and ligases work together to assemble recombinant DNA constructs
• Compare plasmid cloning, restriction mapping, and genome editing as methods for gene modification
• Evaluate how recombinant DNA approaches support canola trait development and molecular diagnostics while considering ethical and regulatory issues

Learning Objectives

• Explain how gravity drives large-scale structure formation in the universe through matter clustering.
• Interpret observational evidence (distribution of matter and motion of galaxies) that supports gravitational organization over time.
• Connect orbital motion and interactions to changes in galactic-scale clustering patterns.

Learning Objectives

• Explain how enthalpy change (ΔH) relates to heat flow in constant-pressure and bomb calorimetry.
• Use calorimetry data to calculate or interpret energy changes for chemical reactions.
• Apply standard enthalpies of formation and Hess’s law to determine ΔH for multi-step reactions.+ Show more

Learning Objectives

• Explain how electronegativity differences create bond dipoles and predict molecular polarity
• Distinguish polar vs nonpolar molecules based on structure and symmetry
• Relate bond polarity to intermolecular forces and macroscopic properties like solubility and boiling point

Learning Objectives

• Explain how multicellular organisms use hierarchical levels of organization (cells → tissues → organs → organ systems) to perform specialized functions.
• Describe how signals at one level (chemical and physical) coordinate responses across multiple levels.
• Analyze how disruptions at any level can lead to system-level instability, impaired growth, or disease.

Learning Objectives

• Explain how waves can be absorbed, reflected, refracted, or transmitted when they encounter matter.
• Connect wave-matter interactions to energy transfer and observable effects (such as heating or motion of charges).
• Describe how a material’s response can depend on frequency and determine which radiation passes or is blocked.

Learning Objectives

• Explain how greenhouse gases and aerosols affect Earth’s energy balance and climate trends.
• Compare natural and human drivers of climate change, including volcanic eruptions and El Niño.
• Analyze how different timescales of forcing can lead to observed changes in weather patterns.

Learning Objectives

• Explain how ethical, legal, and social considerations shape the use of biotechnology.
• Evaluate biosafety, intellectual property, ecological risk, and equitable access in real-world cases.
• Analyze how regulatory frameworks and public consultation influence biotechnology deployment.+ Show more

Learning Objectives

• Explain how mutation, gene regulation, and natural selection can jointly produce adaptive evolutionary change.
• Describe how gene flow influences allele frequencies and population responses to selection.
• Connect DNA-level variation to gene expression, fitness consequences, and ecological outcomes.

Learning Objectives

• Explain how different climate models represent physical processes using energy-balance, radiative-convective, and general circulation frameworks.
• Describe key sources of uncertainty in climate projections, including parameterized radiative transfer, cloud feedbacks, and ocean–atmosphere coupling.
• Interpret how model validation uses paleoclimate proxies, instrumental records, and sensitivity experiments to test forcings and feedback strengths.

Learning Objectives

• Explain acid-base behavior using Arrhenius, Brønsted–Lowry, and Lewis definitions and connect them to observable reactions.
• Distinguish strong and weak acids/bases using dissociation, conjugate pairs, and pH/pOH relationships.
• Interpret buffer action and titration curves, including equivalence points and salt formation using net ionic thinking.

Learning Objectives

• Explain how effective nuclear charge and electron shielding drive periodic trends in atomic and ionic properties.
• Predict how atomic radius, ionization energy, and electronegativity change across periods and down groups.
• Use periodic trends to infer likely ion sizes and bonding tendencies for representative elements.

Learning Objectives

• Compare prokaryotic and eukaryotic cell architecture by describing ultrastructural differences and their structure–function relationships.
• Explain how plasma membrane composition and compartmentalization affect macromolecule localization and cellular processes.
• Interpret how microscopy techniques and subcellular localization evidence support conclusions about organelle morphology.

Learning Objectives

• Use Coulomb’s law to determine the magnitude and direction of electric force between point charges.
• Explain how the electric field relates to force per unit positive test charge and how fields superpose.
• Differentiate electric potential and electric potential energy and apply them to energy bookkeeping for charge configurations.

Learning Objectives

• Use oxidation numbers to identify oxidation and reduction in chemical reactions.
• Write and balance redox equations in acidic and basic media using electron-transfer logic.
• Connect galvanic and electrolytic cells to standard reduction potentials and use cell notation to calculate cell EMF.+ Show more

Learning Objectives

• Form scientific claims that are grounded in evidence and clearly distinguish evidence from interpretation.
• Use warrants, qualifiers, and logical reasoning to connect evidence to conclusions in scientifically appropriate ways.
• Evaluate competing hypotheses by assessing evidence strength and explaining why one inference is better supported than others.+ Show more

Learning Objectives

• Describe how Dalton, Thomson, Rutherford, and Bohr proposed atomic models and what evidence supported each model.
• Connect atomic number, mass number, isotopic abundance, and nuclear charge to measurable properties of atoms.
• Explain how cathode rays, gold foil scattering, and emission spectra provide empirical support for atomic structure.+ Show more

Learning Objectives

• Explain how atmospheric composition, pressure gradients, and thermal structure drive large-scale circulation patterns
• Use the Coriolis force and idealized circulation cells (Hadley and Ferrel) to interpret wind and pressure behavior
• Relate jet streams, frontal systems, and atmospheric stability (lapse rates and radiative heating) to weather regimes and climate patterns+ Show more

Learning Objectives

• Explain how changes in concentration, pressure, and temperature shift chemical equilibrium according to Le Chatelier’s principle.
• Predict how the equilibrium position and the equilibrium constant relate to temperature changes for a reversible reaction.
• Describe how catalysts affect reaction rates without changing the equilibrium composition.

Learning Objectives

• Compare ionic, covalent, and metallic bonding using electron-transfer, electron-sharing, and electron-delocalization ideas.
• Predict bond polarity from electronegativity differences and relate bond order and bond energy to bond length and strength.
• Explain ionic lattice energy in terms of electrostatic attraction and how it influences melting point and solubility.+ Show more

Learning Objectives

• Use cost–benefit reasoning to compare mitigation, adaptation, conservation, and socio-economic policy options.
• Apply multi-criteria decision analysis (MCDA) to evaluate alternatives using criteria such as equity, ecosystem services, and long-term resilience.
• Interpret scenario-modeling results and explain how monitoring, evaluation, and governance affect policy outcomes.

Learning Objectives

• Explain how PCR, gel electrophoresis, and high-throughput sequencing each contribute to nucleic-acid analysis.
• Compare nucleic-acid delivery and genome editing tools (recombinant plasmids, viral vectors, CRISPR-Cas) in basic terms.
• Evaluate scientific, medical, and ethical considerations (efficacy, safety, and responsible use) when applying molecular techniques.

Learning Objectives

• Explain how character matrices, molecular sequence alignment, and substitution-rate models help reconstruct evolutionary relationships.
• Interpret cladograms and phylograms, including what monophyly, paraphyly, and polyphyly mean for classification.
• Use homology assessment and fossil calibration to support molecular phylogenetic inference and taxonomic revision.

Learning Objectives

• Explain how solar nebula and protoplanetary disk processes can produce the Solar System’s overall architecture.
• Describe how accretion and planetary differentiation influence composition, structure, and likely atmospheric outcomes.
• Use observational constraints (spectroscopy, orbital parameters, and sample analyses) to connect models to present-day planetary diversity.+ Show more

Learning Objectives

• Use equilibrium constants (Kc and Kp) to quantify composition at equilibrium
• Calculate and interpret the reaction quotient Q to predict the direction of net reaction
• Explain how temperature affects equilibrium constants using thermodynamic ideas (ΔG°, ΔH°, ΔS°)