Grade 12 Worksheets

Learning Objectives

• Explain how limited resources can restrict population growth in an ecosystem
• Describe carrying capacity as an environmental upper bound and connect it to births, deaths, and competition
• Interpret how models and equilibrium outcomes arise when resource availability changes

Learning Objectives

• Explain how base pairing in DNA and RNA enables faithful information transfer during gene expression
• Describe how codons in messenger RNA determine the order of amino acids in a protein
• Connect changes in DNA sequence (mutations) to changes in protein structure and function

Learning Objectives

• Explain how wave speed relates frequency and wavelength using the relationship v = fλ.
• Use frequency and wavelength information to predict how changes affect wave behavior.
• Apply wave concepts to real contexts such as electromagnetic waves and sound waves.

Learning Objectives

• Explain conservation of mass in chemical reactions using atomic rearrangement and electron reorganization
• Use stoichiometric reasoning to connect balanced chemical equations with measured reactant and product amounts
• Distinguish between atoms being conserved and molecules being rearranged when reactions occur

Learning Objectives

• Explain how gravity drives the clustering of matter on large cosmic scales
• Describe how orbital motion and interactions can change over time
• Use observable evidence (distribution and motion of matter) to support gravitational clustering claims+ Show more

Learning Objectives

• Explain how Kepler’s laws describe patterns in orbital motion
• Connect gravity to the centripetal acceleration required for orbital paths
• Use Kepler’s third law to interpret how orbital period relates to orbital radius+ Show more

Learning Objectives

• Explain how gene flow changes allele frequencies by moving alleles between populations through migration and interbreeding.
• Describe how genetic drift changes allele frequencies by chance, with stronger effects in smaller populations.
• Compare the roles of gene flow, genetic drift, and selection in shaping evolutionary change.+ Show more

Learning Objectives

• Explain how information can be encoded into digitized electromagnetic signals using controlled changes in signal properties.
• Use evidence-based reasoning to relate measurable wave behaviors (frequency content, modulation, propagation effects) to transmitted digital information.
• Compare how different modulation approaches affect how a receiver reconstructs bits from an electromagnetic wave.

Learning Objectives

• Explain how reflection, refraction, interference, and absorption affect electromagnetic radiation in devices.
• Analyze how wavelength and wave behavior influence imaging resolution and sensor detection.
• Apply wave-interaction concepts to justify design choices in communication and measurement systems.

Learning Objectives

• Explain how waves can be reflected, refracted, transmitted, or absorbed when interacting with matter.
• Relate wave-matter interactions to energy transfer and observable effects such as heating.
• Analyze how material properties and wave frequency influence how much energy a material absorbs or blocks.

Learning Objectives

• Explain how the water cycle transfers water among Earth’s reservoirs using energy from the Sun and gravity.
• Analyze how variability in temperature, land cover, and atmospheric circulation can change local precipitation and water availability.
• Evaluate connections between short-term weather processes and longer-term climate patterns in the water cycle.+ Show more

Learning Objectives

• Explain how nuclear fusion in the Sun’s core converts mass into energy and produces outward heat and light
• Describe how changes in fusion rate trigger feedback that helps maintain relatively stable solar output
• Connect stellar fusion processes to helium buildup and the long-term evolution of the Sun+ Show more

Learning Objectives

• Explain how the mass defect in nuclear reactions relates to binding energy and the energy released or absorbed.
• Apply conservation of particles (nucleons and charge) to describe nuclear fission, fusion, and decay chains.
• Describe how radiation carries away energy and how that connects nuclear structure to observable effects.

Learning Objectives

• Explain how reaction conditions and particle-level collisions influence reaction rate and overall yield.
• Interpret reaction yield using stoichiometry and limiting reactants.
• Predict how competing pathways can change the amount of desired product formed.+ Show more

Learning Objectives

• Explain how genetic drift can change allele frequencies through random sampling in finite populations.
• Compare the effects of selection and drift on allele frequencies over time.
• Use probability-based reasoning to interpret how allele frequency patterns can arise without deterministic advantage.

Learning Objectives

• Explain how photosynthesis transforms light energy into chemical energy stored in sugars
• Describe how cellular respiration releases usable energy by breaking down sugar molecules
• Compare how both processes rearrange atoms and manage energy flow in cells and ecosystems+ Show more

Learning Objectives

• Explain how electromagnetic waves carry energy using coupled electric and magnetic fields
• Use frequency–wavelength relationships to predict how signals behave in different media
• Describe reflection, refraction, attenuation, dispersion, and polarization in signal transmission

Learning Objectives

• Explain how atomic structure (electron configuration) relates to periodic trends in electronegativity and ion formation.
• Predict how properties change across periods and down groups using electron arrangement patterns.
• Use periodic trends to justify typical reactivity and common ion charges for representative elements.

Learning Objectives

• Explain how primary productivity, decomposition, and nutrient cycling control energy flow and ecosystem turnover
• Describe how biogeochemical cycles connect organisms to the atmosphere, hydrosphere, and lithosphere
• Analyze Alberta-specific examples (peatlands, boreal fire, and agricultural soils) and how they affect ecosystem productivity and resilience

Learning Objectives

• Explain how dissolution, sorption, volatilization, and biodegradation affect chemical fate in soil and water.
• Compare kinetic versus equilibrium ideas to predict contaminant distribution over time.
• Apply contaminant transport concepts to plausible Alberta scenarios (agricultural runoff and spills).

Learning Objectives

• Explain how Aufbau, Pauli exclusion, and Hund’s rules determine electron configurations in atoms.
• Predict valence electrons and relate electron configuration to periodic trends and chemical behavior.
• Use oxidation state logic and bonding tendencies derived from electron configuration to interpret reactivity and physical properties.+ Show more

Learning Objectives

• Explain how London dispersion forces, dipole-dipole interactions, and hydrogen bonding arise between molecules.
• Predict how intermolecular forces affect boiling/melting points, solubility, and surface tension.
• Use molecular properties (polarity, presence of N/O/F–H) to justify which intermolecular force is strongest for a given substance.

Learning Objectives

• Explain how radiometric dating uses parent and daughter isotopes to determine absolute ages.
• Describe how half-life and isotope systematics (e.g., uranium–lead, potassium–argon, carbon-14) determine what materials can be dated.
• Evaluate why closure temperature and analytical uncertainty affect whether a radiometric “clock” records formation or later events.+ Show more

Learning Objectives

• Explain how trophic relationships transfer energy through trophic levels and limit food-chain length
• Describe how keystone species and trophic cascades can reshape community structure
• Connect biogeochemical cycles to nutrient availability and ecosystem productivity+ Show more

Learning Objectives

• Explain how elements such as carbon, nitrogen, and phosphorus move among the atmosphere, hydrosphere, lithosphere, and biosphere
• Describe the roles of weathering, biological uptake, decomposition, and sedimentation in shaping biogeochemical cycles
• Evaluate how human activities change cycle rates and reservoirs and discuss natural feedbacks+ Show more

Learning Objectives

• Explain how the spatial distribution and focal depths of earthquakes reveal active tectonic settings
• Compare focal mechanisms and moment tensors to interpret fault slip styles and stress regimes
• Use seismic tomography and integrated observations (mapping + geodetic data) to infer subsurface tectonic structure

Learning Objectives

• Explain how igneous, sedimentary, and metamorphic rocks connect through rock-cycle processes.
• Identify surface and subsurface processes that transform rocks over geologic time.
• Use rock-cycle vocabulary (weathering, erosion, deposition, burial, heat/pressure, melting, crystallization).

Learning Objectives

• Analyze how human resource use changes Earth system components (soil, water, air, and biological communities).
• Explain cascading environmental effects, including erosion, habitat disruption, and climate feedbacks.
• Evaluate trade-offs between economic benefits and long-term system resilience using evidence and sustainability strategies.

Learning Objectives

• Use VSEPR electron-pair repulsion principles to predict molecular geometry and bond angles.
• Relate electron-pair arrangements and hybridization to molecular shape and steric effects.
• Predict molecular polarity and qualitative intermolecular interactions based on geometry.

Learning Objectives

• Explain laminar vs. turbulent flow and how it affects mixing and momentum transfer in natural systems
• Apply continuity and Bernoulli’s relationships to predict how pressure and velocity change in fluids
• Use dimensional analysis and scaling ideas (e.g., Reynolds number) to connect lab observations to field conditions

Learning Objectives

• Use VSEPR theory to predict electron-domain geometry and molecular shape for common molecules
• Connect hybridization to molecular geometry and bond angles
• Explain how molecular shape and polarity influence physical properties such as boiling point and solubility+ Show more

Learning Objectives

• Explain how sensor placement, indicator selection, and network design support representative environmental monitoring.
• Describe how temporal resolution and data quality assurance improve long-term trend detection.
• Evaluate how spatial heterogeneity and anthropogenic sources affect interpretation of monitoring results.

Learning Objectives

• Explain how mutation, natural selection, genetic drift, and gene flow change allele frequencies over time
• Use population-genetics concepts to predict how evolutionary pressures can produce adaptation and diversity
• Analyze the role of population size and environment in shaping phenotypic outcomes

Learning Objectives

• Explain wave behavior using wavelength, frequency, amplitude, and speed for mechanical and electromagnetic waves
• Apply the wave relationships (v = λf and T = 1/f) to predict wave propagation
• Analyze how interference, refraction, and boundary conditions affect observable wave behavior+ Show more

Learning Objectives

• Explain how molecular markers are used to estimate genetic diversity, inbreeding, effective population size, and gene flow in fragmented populations.
• Interpret genetic metrics (e.g., heterozygosity and genetic structure) to assess demographic and long-term extinction risk.
• Justify conservation planning decisions such as habitat corridors and translocations using conservation genetics evidence.

Learning Objectives

• Explain redox processes using electron transfer and oxidation number changes.
• Balance redox half-reactions using conservation of mass and charge.
• Use electrochemical concepts to interpret real-world corrosion and battery reactions.

Learning Objectives

• Describe how energy moves and changes form in real systems (combustion, buildings, and photovoltaic generation).
• Apply the laws of thermodynamics to explain conservation of energy and why useful energy decreases in transformations.
• Evaluate efficiency using energy accounting (useful output vs. total input) and relate losses to environmental impacts.

Learning Objectives

• Explain how gene expression converts DNA information into functional proteins through transcription and translation.
• Describe how gene regulation (promoters, enhancers, transcription factors, and epigenetic modifications) affects when and where genes are expressed.
• Analyze how regulatory networks create tissue specificity and temporal patterns of protein production.+ Show more

Learning Objectives

• Explain how reproductive isolation prevents gene flow and leads to distinct lineages over time.
• Differentiate allopatric, sympatric, and peripatric speciation using examples and key barriers.
• Analyze how genetic incompatibilities, behavior, and ecological specialization help maintain species boundaries.

Learning Objectives

• Synthesize biological, chemical, and physical evidence to form defensible scientific conclusions
• Apply multi-criteria decision frameworks to evaluate competing solutions under uncertainty
• Communicate assumptions, limitations, and confidence levels clearly in a technical argument+ Show more

Learning Objectives

• Explain the meaning of enthalpy change (ΔH) and distinguish exothermic and endothermic reactions using sign conventions.
• Calculate or interpret reaction enthalpies using ideas behind Hess’s law and standard enthalpies of formation.
• Apply calorimetry and bond-energy/thermochemical reasoning to predict heat absorbed or released and its environmental relevance.

Learning Objectives

• Explain uniform circular motion using centripetal acceleration and centripetal force.
• Use angular velocity and period relationships (ω, T) to analyze rotational motion.
• Distinguish centripetal (radial) and tangential acceleration in uniform vs. non-uniform rotation.+ Show more

Learning Objectives

• Explain how population-scale sequencing and personalized medicine use genomic data to improve health and decision-making.
• Evaluate potential benefits and risks of emerging genomic interventions, including gene drives, with attention to ethics and biosafety.
• Apply concepts of data privacy, consent, and regulatory frameworks to real-world genomic applications and impacts.

Learning Objectives

• Explain how Le Chatelier’s principle predicts shifts in chemical equilibrium when concentrations, pressure, or temperature change.
• Identify how gas-phase mole ratios and pressure changes affect equilibrium direction.
• Distinguish the effects of temperature changes on equilibrium constants and the role of reaction enthalpy.+ Show more

Learning Objectives

• Explain how conservation of momentum and conservation of energy apply to isolated systems
• Distinguish elastic, inelastic, and perfectly inelastic collisions using conservation laws
• Set up and solve algebraic conservation equations for initial and final states

Learning Objectives

• Distinguish galvanic (spontaneous) and electrolytic (nonspontaneous) electrochemical cells using electrode roles and redox behavior.
• Explain how standard reduction potentials and cell potential relate to overall electromotive force (emf).
• Apply conventions for anode/cathode, oxidation/reduction, and salt-bridge function to analyze real electrochemical processes.+ Show more

Learning Objectives

• Explain how reversible reactions reach dynamic equilibrium when forward and reverse rates become equal.
• Predict how changes in concentration, pressure, and temperature affect equilibrium using Le Chatelier’s principle.
• Apply equilibrium concepts and expressions (Kc/Kp) to interpret or estimate relative concentrations.+ Show more

Learning Objectives

• Explain radioactive decay using quantitative decay laws and half-life relationships.
• Solve basic nuclear calculation problems involving activity, decay chains, and energetics.
• Apply conservation of nucleon number and charge to balance nuclear reactions.+ Show more