Grade 12 Science Worksheets

Learning Objectives

• Explain how sensors, control centers, and effectors create feedback loops to maintain homeostasis.
• Differentiate negative feedback from positive feedback and predict the direction of change in each.
• Analyze how neural and hormonal signals contribute to regulating temperature, blood chemistry, and water balance.+ Show more

Learning Objectives

• Explain how births, deaths, immigration, and emigration affect population size over time
• Compare exponential vs. logistic growth models and interpret the role of carrying capacity
• Evaluate how density-dependent and density-independent factors influence population change+ Show more

Learning Objectives

• Explain how environmental monitoring networks are designed using representative sampling and appropriate sensor placement.
• Select indicators and justify temporal and spatial resolution for detecting long-term environmental trends.
• Apply quality assurance ideas to improve reliability and interpret results in the presence of spatial heterogeneity and human (anthropogenic) sources.

Learning Objectives

• Explain how momentum depends on both mass and velocity (including direction).
• Apply the law of conservation of momentum to analyze collisions in a closed system.
• Distinguish elastic and inelastic collisions by comparing kinetic energy behavior while momentum stays constant.+ Show more

Learning Objectives

• Explain how energy is transferred and dissipated in oscillatory systems, including the role of damping.
• Analyze how resonance and driving frequency affect amplitude and energy flow in forced oscillations.
• Apply conservation of energy to systems with non-conservative forces such as friction and air resistance.

Learning Objectives

• Explain energy conservation in a closed system using energy accounting rather than only motion descriptions.
• Identify how energy transfers and transforms (e.g., to thermal energy) while remaining conserved overall.
• Use initial and final states to analyze real-world scenarios involving nonconservative forces.

Learning Objectives

• Explain how PCR amplification, DNA sequencing, recombinant DNA cloning, and CRISPR–Cas editing work mechanistically
• Interpret genomic data concepts such as SNPs, copy number variation, and sequencing errors
• Evaluate ethical considerations and limits of genomic inference in real-world applications

Learning Objectives

• Explain how relative dating methods (rock layering, stratigraphic correlation, and index fossils) build a timeline of Earth history.
• Describe how radiometric/isotope dating provides absolute ages and how uncertainties are interpreted.
• Analyze how changes in Earth systems (atmosphere, oceans, and life) connect to events across geological time, including mass extinctions and glaciations.

Learning Objectives

• Compare mitosis and meiosis in terms of chromosome behavior, division steps, and resulting ploidy.
• Explain how homologous recombination (crossing over) increases genetic variation.
• Analyze how nondisjunction and chromosome segregation errors lead to aneuploidy and altered phenotypes.+ Show more

Learning Objectives

• Distinguish between London dispersion forces, dipole-dipole interactions, and hydrogen bonding
• Predict how intermolecular forces influence boiling point, melting point, surface tension, and solubility
• Connect molecular structure (polarity and hydrogen-bonding ability) to observed condensed-phase behavior+ Show more

Learning Objectives

• Explain major patterns and causes of biodiversity loss, including habitat fragmentation, invasive species, overexploitation, and climate change.
• Compare species richness, evenness, functional diversity, and genetic diversity as different measures of biodiversity.
• Evaluate conservation strategies such as protected areas, restoration ecology, and genetic management using real-world examples.+ Show more

Learning Objectives

• Distinguish key interspecific interaction types (competition, predation, parasitism, mutualism, commensalism) and predict likely effects on populations.
• Explain how energy flow through food webs and trophic efficiency influence biomass distribution and ecosystem functioning.
• Apply ecological concepts to Alberta examples (aspen–mycorrhizal mutualism and wolf–elk–vegetation cascades) to reason about community resilience and biodiversity.

Learning Objectives

• Explain how environmental pressures can change allele frequencies through differential survival and reproduction.
• Differentiate directional, stabilizing, and disruptive selection and predict how each affects trait distributions.
• Use examples like antibiotic resistance to connect genetic variation to observable evolutionary change.

Learning Objectives

• Explain how regulatory signals control when a gene is transcribed in different cell types.
• Describe how transcription factors and chromatin structure influence gene expression.
• Evaluate how RNA and protein availability can change the outcome of gene expression.+ Show more

Learning Objectives

• Explain gravitational fields and how they relate to gravitational potential energy in two-body systems
• Determine how gravitational field strength varies with distance from a mass and use that idea to predict motion
• Apply energy and momentum concepts to circular orbits and escape velocity+ Show more

Learning Objectives

• Explain how mineral and energy resource assessment uses geological and geophysical evidence to estimate deposit size and quality.
• Differentiate measured reserves from inferred resources and describe why confidence levels differ.
• Evaluate how extraction methods and environmental constraints (waste, water demand, and greenhouse gases) affect project feasibility.+ Show more

Learning Objectives

• Explain how scientific knowledge and technological capacity shape decisions about environmental and social outcomes in real regional contexts.
• Evaluate trade-offs in STSE scenarios using criteria such as environmental impact, economic drivers, and social values.
• Use historical and current policy/regulatory examples to support claims about responsible science and technology choices.

Learning Objectives

• Explain how matter cycles among Earth’s atmosphere, hydrosphere, biosphere, and geosphere
• Describe the steps of the water cycle and the carbon cycle and how each step changes matter’s form
• Analyze cause-and-effect relationships between cycling processes and observable environmental changes+ Show more

Learning Objectives

• Explain how photon energy depends on frequency using E = hf and interpret what changing frequency does to photon energy.
• Use the photoelectric effect to justify quantized energy exchange between light and matter.
• Describe threshold frequency and work function and connect them to whether electrons are emitted.+ Show more

Learning Objectives

• Use principal, azimuthal (angular momentum), magnetic, and spin quantum numbers to describe electron states in atoms.
• Apply the Aufbau principle, Pauli exclusion principle, and Hund’s rule to build orbital diagrams and write standard electron configurations.
• Explain how photoelectron spectroscopy supports the energy-level model and why anomalous configurations occur for certain transition metals.

Learning Objectives

• Explain radioactive decay, half-life, and activity using quantitative relationships.
• Apply conservation of nucleon number and charge to balance nuclear equations.
• Analyze nuclear reaction energetics using mass-energy concepts and interpret decay chains.

Learning Objectives

• Represent chemical change using balanced symbolic chemical equations with correct stoichiometric coefficients and state symbols.
• Apply the law of conservation of mass to produce balanced equations and interpret mole ratios quantitatively.
• Classify reactions as synthesis, decomposition, single replacement, double replacement, or combustion and identify precipitation reactions using net ionic equations.

Learning Objectives

• Explain how genetic drift and selection can both change allele frequencies over generations.
• Use probability-based reasoning to predict changes in allele frequencies in small vs. large populations.
• Interpret statements about evolutionary mechanisms using population-level models.

Learning Objectives

• Explain how phylogenetic trees use shared derived characters to infer evolutionary relationships.
• Distinguish homologous traits from analogous similarities caused by convergent evolution.
• Describe how molecular clock models estimate divergence times and how reliability is assessed statistically.

Learning Objectives

• Explain how lithospheric plates move and how mantle convection and isostasy contribute to plate dynamics.
• Compare divergent, convergent, and transform boundaries and predict the types of surface geology they produce.
• Use evidence from radiometric dating, stratigraphic correlation, and seismic tomography to reconstruct Earth’s geologic history.

Learning Objectives

• Explain how energy is transformed during photosynthesis and cellular respiration, including light reactions, Calvin cycle, aerobic respiration, and anaerobic pathways.
• Describe how electron transport chains and chemiosmosis generate ATP in mitochondria or chloroplasts.
• Compare energy yield and constraints (e.g., oxygen availability and metabolic rate limits) across cellular pathways.+ Show more

Learning Objectives

• Explain how evolution occurs in populations through variation, differential survival, and reproduction.
• Describe how mutation, genetic drift, gene flow, and natural selection can change allele frequencies over time.
• Evaluate evidence for evolutionary change using comparative anatomy, fossils, biogeography, and molecular data.+ Show more

Learning Objectives

• Explain reaction rates using collision theory and the activated complex model
• Predict how concentration, temperature, surface area, and catalysts affect reaction rate
• Determine or interpret reaction orders and rate laws from kinetic observations+ Show more

Learning Objectives

• Explain how simple harmonic motion (SHM) relates displacement, restoring force, and sinusoidal behavior.
• Calculate or compare period and natural frequency for mass–spring and pendulum systems using SHM models.
• Analyze how phase, damping, and resonance affect amplitude and energy exchange in oscillatory systems.+ Show more

Learning Objectives

• Explain how electric charge, electric current, and electric fields relate to magnetic fields using core electromagnetic principles.
• Describe how time-varying electric and magnetic fields produce electromagnetic waves and how those waves travel through space.
• Connect electromagnetic waves across the spectrum to real-world technologies such as antennas and wireless communication.

Learning Objectives

• Explain how meiosis produces gametes with half the chromosome number
• Describe how crossing over and independent assortment create genetic diversity
• Connect meiotic processes to variation in allele combinations and evolutionary outcomes

Learning Objectives

• Use Ohm’s law and power relationships to calculate voltage, current, resistance, and power in circuit elements.
• Analyze series and parallel circuits using quantitative relationships and compare their electrical behavior.
• Apply Kirchhoff’s rules to solve for unknown currents or voltages in multi-loop circuits.+ Show more

Learning Objectives

• Explain Newton’s Second Law by relating net force, mass, and acceleration.
• Determine how acceleration changes when net force increases/decreases or mass changes.
• Use vector reasoning to find the direction of acceleration from multiple forces.

Learning Objectives

• Explain how atomic structure drives periodic trends in atomic radius, ionization energy, electron affinity, and electronegativity.
• Use periodic trends to predict and justify changes in elemental properties across periods and down groups.
• Connect periodic trends to real-world applications such as corrosion resistance, catalysis, and nutrient availability.

Learning Objectives

• Explain how spatial distribution and focal depth of earthquakes indicate tectonic setting and active structures.
• Interpret focal mechanisms and moment-tensor ideas to infer the dominant stress and fault motion.
• Use seismic tomography and integrated evidence (seismicity, geology, and geodesy) to describe crust and mantle deformation histories.

Learning Objectives

• Explain how biological nutrient cycles, chemical speciation, and physical transport interact to create emergent environmental outcomes.
• Use integrated cross-disciplinary reasoning to interpret complex regional phenomena in Alberta landscapes.
• Apply systems thinking to propose management-relevant predictions and trade-offs for real environmental cases.

Learning Objectives

• Explain how Earth’s internal energy and mantle convection drive the motion of tectonic plates over geologic time.
• Differentiate divergent, convergent (including subduction), and transform boundary interactions and the geologic hazards they produce.
• Evaluate evidence for plate motion using rock ages, seafloor magnetic stripes, and earthquake distribution.

Learning Objectives

• Explain how uncertainty can be represented using probability and interpret outcomes under both frequentist and Bayesian perspectives.
• Update beliefs using Bayesian reasoning by combining a prior with a likelihood to obtain a posterior.
• Use probabilistic statements to support decision-making, including communicating uncertainty and model limitations.

Learning Objectives

• Explain how probabilistic hazard characterization links earthquake/volcanic/storm processes to expected hazard levels over time.
• Use exposure mapping and scenario-based impact thinking to describe who and what is affected by hazards.
• Evaluate strategies to reduce long-term consequences through land-use planning, early-warning interpretation, and engineered interventions while considering equity and uncertainty.

Learning Objectives

• Explain how reaction rate depends on collision frequency and the fraction of collisions with sufficient energy.
• Compare the effects of reactant concentration, temperature, and surface area on microscopic collision behavior.
• Use collision theory to justify how changes at the particle level affect product formation over time.

Learning Objectives

• Describe the large-scale circulation patterns of Hadley, Ferrel, and polar cells and how they relate to temperature gradients.
• Explain how the Coriolis effect and pressure systems shape jet streams and storm tracks.
• Use conceptual and quantitative ideas (e.g., pressure maps and potential vorticity concepts) to interpret weather regimes and seasonal shifts.

Learning Objectives

• Explain how calibration, precision, accuracy, and traceability contribute to measurement integrity in laboratory instrumentation.
• Differentiate random error and systematic bias, and describe how repeatability and uncertainty are quantified.
• Apply calibration models to correct instrument response and interpret how measurement properties affect derived parameters and data analysis.+ Show more

Learning Objectives

• Explain how molecular orbital theory extends valence-bond ideas for diatomic molecules and predicts bonding order.
• Compare localized versus delocalized bonding models and connect each model to delocalization and observed properties.
• Use energy-level diagrams and symmetry ideas to predict electronic transitions and magnetic behavior.

Learning Objectives

• Explain how reaction yield depends on conditions such as temperature, pressure, concentration, and catalysts.
• Connect particle models and collision ideas to changes in reaction rate and product formation.
• Use stoichiometry to predict limiting reactants and how they control maximum possible yield.+ Show more

Learning Objectives

• Explain how energy flows one direction through ecosystems, largely entering as sunlight and leaving as heat.
• Describe how matter cycles in the biosphere, focusing on carbon, nitrogen, and phosphorus movement among organisms and the environment.
• Connect photosynthesis, cellular respiration, and decomposition to long-term ecosystem patterns and environmental change.

Learning Objectives

• Explain how historical atomic models evolved toward quantum descriptions of the electron and nucleus.
• Use spectral lines and scattering evidence to justify discrete (quantized) energy levels.
• Relate quantum numbers and orbital shapes to electron arrangements and chemical behavior.

Learning Objectives

• Organize a scientific report using the Introduction-Methods-Results-Discussion (IMRaD) structure and an effective structured abstract
• Align hypotheses with analyses and draw conclusions that match the statistical evidence
• Write reproducible methods and integrate tables/figures with clear captions and appropriate citation choices

Learning Objectives

• Calculate reaction enthalpy changes using standard enthalpies of formation and Hess’s law.
• Use combustion and standard enthalpy data to determine ΔH for chemical reactions.
• Apply bond enthalpy ideas to estimate and compare energetic trends between reaction pathways.