Grade 12 Worksheets

Learning Objectives

• Explain how competition for limited resources affects survival and reproduction in interacting populations.
• Describe feedback effects that occur when resource scarcity changes per-capita success over time.
• Use ecological models to predict how changes in one population can influence others through shared limitations.

Learning Objectives

• Explain how DNA sequence is converted into information used to build proteins
• Describe base pairing and how RNA codons determine the order of amino acids
• Connect changes in DNA sequence to changes in protein structure and function

Learning Objectives

• Explain how homologous structures and embryological similarities support common ancestry
• Describe how fossil record patterns provide evidence for evolutionary change over time
• Compare molecular evidence (DNA and protein similarities) with respect to relatedness+ Show more

Learning Objectives

• Explain how nuclear fusion in the Sun’s core converts mass into energy and powers solar output.
• Describe how changes in fusion rate over time can affect the Sun’s luminosity and inner solar system conditions.
• Connect energy production in stellar interiors to the formation of heavier elements and later generations of stars and planets.

Learning Objectives

• Use Hardy–Weinberg equilibrium to connect allele and genotype frequencies to microevolutionary change
• Explain how selection, genetic drift, and migration alter allele and genotype frequencies over generations
• Interpret heterozygosity, effective population size, and fixation indices as measures of genetic variation+ Show more

Learning Objectives

• Evaluate trade-offs between renewable and nonrenewable resource allocation using sustainability criteria and data.
• Apply basic water budgeting and energy portfolio thinking to analyze long-term urban resource supply.
• Use lifecycle assessment and carrying-capacity constraints to compare extraction, reclamation, and waste-handling options.

Learning Objectives

• Use cost–benefit reasoning and multi-criteria decision analysis to compare climate and resource policies.
• Analyze tradeoffs among mitigation, adaptation, conservation, and socio-economic objectives using case-style scenarios.
• Evaluate policy outcomes with monitoring and evaluation, incentive structures, and governance constraints.

Learning Objectives

• Explain constructive and destructive interference using superposition and phase relationships.
• Describe coherence requirements and how they affect observable interference patterns.
• Apply interference and diffraction ideas to predict patterns in single- and double-slit setups.+ Show more

Learning Objectives

• Calculate reaction enthalpy using standard enthalpies of formation and combustion data.
• Apply Hess’s law to combine enthalpy terms for a net chemical equation.
• Use bond enthalpies to make approximate energy estimates and compare reaction pathways.

Learning Objectives

• Explain how extracting and processing resources can change Earth systems (soil, water, air, and ecosystems).
• Evaluate environmental trade-offs between economic benefits and long-term system resilience.
• Identify mitigation and restoration strategies that reduce resource-related impacts.

Learning Objectives

• Explain how gravitational field strength depends on distance from a mass and how it relates to acceleration
• Use energy and momentum ideas to describe orbital motion, circular-orbit velocity, and escape velocity
• Describe tidal effects and how they arise from gradients in gravitational field strength

Learning Objectives

• Classify ionic, covalent, and metallic bonding using electrostatic interactions, polarity, and bond order ideas.
• Use Lewis structures and formal charge reasoning to predict molecular shapes and polarity with VSEPR.
• Relate bonding models to macroscopic properties such as melting point, conductivity, and solubility.

Learning Objectives

• Explain how shared derived characters support hypotheses of evolutionary relationships in phylogenetic trees.
• Distinguish homologous similarities from analogous similarities caused by convergent evolution.
• Describe how molecular clock models and statistical methods can estimate divergence times and assess tree reliability.+ Show more

Learning Objectives

• Explain dynamic chemical equilibrium and how equal forward and reverse reaction rates lead to constant concentrations over time.
• Use Le Châtelier’s principle qualitatively to predict how changes in conditions shift an equilibrium position.
• Interpret the equilibrium constant (K) to determine whether reactants or products are favored.+ Show more

Learning Objectives

• Identify Earth’s internal layers (crust, mantle, outer core, inner core) and describe key properties of each.
• Explain how seismic-wave observations provide evidence for layer boundaries and internal composition.
• Use evidence-based reasoning to connect seismic records and density/phase changes to tectonic and geodynamic processes.

Learning Objectives

• Explain electromagnetic induction in terms of changing magnetic flux and induced electromotive force.
• Apply Faraday’s law and Lenz’s law to predict the direction of induced current/voltage.
• Relate induction to generators, transformers, and inductors in everyday and engineering contexts.

Learning Objectives

• Explain how photon energy relates to frequency using E = hf
• Describe the photoelectric effect using work function and threshold frequency
• Compare classical wave predictions with experimental evidence for quantized energy exchange

Learning Objectives

• Explain how carbon, nitrogen, and phosphorus move among the lithosphere, hydrosphere, atmosphere, and biosphere.
• Describe the roles of weathering, biological uptake, and decomposition in shaping atmospheric and ocean chemistry.
• Analyze how human activity changes biogeochemical cycle rates and reservoirs, and how natural feedbacks can regulate long-term concentrations.

Learning Objectives

• Explain how variation, differential survival, and reproduction can change allele frequencies over generations
• Compare key evolutionary mechanisms (natural selection, genetic drift, gene flow, and mutation) and describe their effects
• Use multiple lines of evidence (fossil record, biogeography, comparative anatomy, and molecular similarity) to support the idea of evolution

Learning Objectives

• Explain how geographic isolation and ecological divergence can reduce or stop gene flow between populations.
• Describe how chromosomal changes and reproductive barriers can lead to speciation.
• Evaluate how hybridization and adaptive radiation can produce new lineages.

Learning Objectives

• Distinguish between London dispersion forces, dipole-dipole interactions, and hydrogen bonding and identify which occurs in different substances.
• Explain how intermolecular forces affect melting points, boiling points, surface tension, and solubility.
• Use molecular polarity and hydrogen-bonding criteria (N, O, F bonded to H) to predict qualitative behavior in condensed phases.

Learning Objectives

• Explain how conservation of momentum applies to systems with changing mass.
• Relate mass ejection or accretion to thrust and changes in a vehicle’s velocity.
• Connect mass flow rate and exhaust velocity to vehicle acceleration and propulsion design.

Learning Objectives

• Define linear momentum and explain how impulse relates to changes in momentum
• Describe how momentum is conserved in an isolated system and distinguish external forces from internal forces
• Compare elastic and inelastic collisions using momentum conservation and kinetic energy outcomes+ Show more

Learning Objectives

• Evaluate competing design solutions by prioritizing criteria and identifying trade-offs among environmental, economic, and social impacts.
• Use evidence and uncertainty to support a defensible claim about performance and possible unintended consequences.
• Explain why an optimized choice can improve one goal while worsening another constraint.

Learning Objectives

• Explain how molecular markers and genetic theory are used to measure diversity, inbreeding, and gene flow in fragmented populations.
• Interpret genetic metrics (heterozygosity, effective population size, and connectivity) to assess extinction risk and demographic viability.
• Evaluate how genetic information can guide conservation planning, such as habitat corridors and recovery strategies using Alberta examples.

Learning Objectives

• Explain how sea-floor spreading at mid-ocean ridges creates new oceanic crust.
• Describe how magnetic stripes form and why they appear symmetrically on both sides of a ridge.
• Interpret relationships among magnetic anomaly patterns, radiometric ages, and plate motion.

Learning Objectives

• Explain how environmental pressures change allele frequencies through differential survival and reproduction
• Differentiate patterns of selection (directional, stabilizing, disruptive) and predict their outcomes
• Use examples such as antibiotic resistance to connect natural selection to observable evolutionary change

Learning Objectives

• Explain how population-scale sequencing and high-resolution genomic data support disease risk prediction and conservation genetics.
• Describe how personalized medicine uses genotype information and why consent and privacy matter.
• Evaluate potential benefits and risks of interventions such as gene drives, including biosafety and long-term ecological impacts.+ Show more

Learning Objectives

• Apply Le Chatelier’s principle to predict how equilibrium shifts when concentration, pressure, or temperature changes.
• Determine which side of a gaseous equilibrium will be favored based on relative moles of gas and pressure changes.
• Explain how temperature changes depend on reaction enthalpy and how catalysts affect reaction rates without changing equilibrium position.

Learning Objectives

• Explain how stratigraphy, radiometric ages, paleomagnetism, structural relationships, and fossils can be combined to reconstruct past tectonic events
• Interpret how multiple lines of evidence constrain the timing and sequence of deformation, magmatism, and sedimentation
• Use integrated reconstruction ideas to describe paleoenvironments and infer plate motions

Learning Objectives

• Explain how resource assessment combines geological data to estimate mineral and energy deposits.
• Differentiate measured reserves from inferred resources and describe why confidence levels differ.
• Evaluate how extraction choices and environmental factors affect the economic viability of a deposit.

Learning Objectives

• Distinguish classical Mendelian inheritance from extended inheritance models such as incomplete dominance, codominance, polygenic inheritance, and sex-linked traits
• Interpret genotype expectations from Punnett squares and explain how dominance, dominance hierarchies, and environmental effects can change outcomes
• Use pedigree patterns and linkage/recombination concepts to predict and evaluate trait transmission

Learning Objectives

• Compare structural features of prokaryotic and eukaryotic cells and relate them to specific functions.
• Explain how membrane composition and compartmentalization influence subcellular processes.
• Use microscopy and localization ideas to interpret organelle morphology and macromolecule distribution.

Learning Objectives

• Distinguish codominance and incomplete dominance from complete dominance using phenotype outcomes
• Explain how multiple genes can produce complex inheritance patterns beyond monohybrid ratios
• Connect genotype combinations to measurable probabilities while accounting for allele interactions and recombination

Learning Objectives

• Explain energy conservation for a closed system using energy accounting across initial and final states
• Differentiate between energy transfer and energy transformation, including nonconservative losses like friction
• Apply the conservation of total mechanical/physical energy to everyday scenarios

Learning Objectives

• Explain how electronegativity differences create bond dipoles and polar bonds.
• Connect molecular polarity to intermolecular forces and real-world behaviors like solubility and boiling point trends.
• Predict how polarity affects separations relevant to environmental chemistry and industrial processing.

Learning Objectives

• Explain how greenhouse gases affect Earth’s energy budget by influencing the flow of radiation.
• Describe radiative forcing and how changes in greenhouse gas concentrations relate to climate change.
• Use feedback concepts to predict whether temperature changes may amplify or be damped.

Learning Objectives

• Explain how matter cycles through the atmosphere, hydrosphere, biosphere, and geosphere.
• Describe how carbon moves through photosynthesis, respiration, and ocean-atmosphere exchange.
• Connect changes in matter cycling to effects on weathering rates, ecosystem function, and climate-relevant gas levels.

Learning Objectives

• Explain how surface reflectivity (albedo) affects Earth’s energy balance
• Describe how melting ice can create positive feedback that amplifies warming
• Evaluate how clouds and atmospheric conditions alter reflection and absorption of solar energy

Learning Objectives

• Explain how galaxy redshifts provide evidence for the expansion of the universe
• Connect spectral line stretching (increasing wavelength) to observable redshift
• Use the distance–redshift relationship to describe how expansion has evolved over time+ Show more

Learning Objectives

• Explain how meiosis produces haploid gametes while maintaining the chromosome number across generations.
• Describe how homologous chromosome pairing and crossing over create new allele combinations.
• Analyze how independent assortment increases genetic variation among offspring.

Learning Objectives

• Explain how alleles are passed from parents to offspring during meiosis and fertilization
• Use Punnett-square probability reasoning to predict monohybrid genotype and phenotype ratios
• Connect genotype to phenotype by interpreting dominance relationships+ Show more

Learning Objectives

• Explain how natural selection changes allele frequencies over generations
• Describe how heritable traits affect fitness in specific environments
• Compare directional adaptation with adaptation that varies across habitats

Learning Objectives

• Explain equilibrium as the condition where the net force on an object is zero
• Use force balance ideas (vector addition) to interpret static and constant-velocity situations
• Analyze everyday systems using the relationship between weight, tension, and balanced forces

Learning Objectives

• Explain how mechanical and thermal energy transform in real physical systems using observable evidence.
• Predict how changes in speed, height, and temperature indicate energy transfer and transformation.
• Apply conservation of energy reasoning to describe likely outcomes in energy transformation scenarios.

Learning Objectives

• Explain how matter cycles through ecosystems using biogeochemical pathways across atmospheric, aquatic, and soil reservoirs
• Describe carbon cycling through photosynthesis and respiration and how decomposers affect stored organic matter
• Trace nitrogen cycling through nitrogen-fixing, nitrification, assimilation, and denitrification+ Show more

Learning Objectives

• Explain how slow geologic processes and sudden events both contribute to landscape change over deep time.
• Distinguish among weathering, erosion, deposition, and tectonic deformation using rock and landform evidence.
• Evaluate how rates of processes affect interpretations of the geologic past.

Learning Objectives

• Explain how energy moves through trophic levels in an ecosystem.
• Describe the roles of producers, consumers, and decomposers in energy flow and nutrient cycling.
• Justify why available energy generally decreases at higher trophic levels.