Grade 12 Science Worksheets

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

• Explain the major processes of erosion dynamics: detachment, transport, and deposition, and how they reshape Earth’s surface.
• Analyze how water, ice, wind, and gravity drive erosion differently in river, glacial, and coastal environments.
• Evaluate how climate, vegetation, and tectonic uplift influence erosion rates and downstream sediment records.

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

• Explain how mutation, natural selection, genetic drift, and gene flow change allele frequencies over time.
• Use phenotype and environmental pressure to predict how natural selection affects populations.
• Describe why genetic drift has a stronger impact in small populations.+ Show more

Learning Objectives

• Explain how thermohaline circulation and wind-driven circulation move heat and nutrients across the global ocean.
• Describe surface gyres, coastal upwelling, and the meridional overturning circulation as linked mechanisms for transport.
• Connect salinity, density stratification, and mixing processes to carbon sequestration and biogeochemical cycling.+ Show more

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

• Frame senior design research questions that can be tested with controlled comparisons and clear success criteria.
• Manage variables and sampling strategies for air or water monitoring in field and laboratory contexts.
• Apply basic statistical reasoning to interpret significance, error sources, and uncertainty characterization.+ Show more

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

• 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

• Use Hardy–Weinberg equilibrium to predict how allele and genotype frequencies behave in idealized populations.
• Analyze how selection coefficients, migration, and genetic drift can shift allele frequencies and genetic diversity.
• Interpret heterozygosity, effective population size, and fixation indices to explain microevolutionary change.

Learning Objectives

• Explain how wavelength, frequency, amplitude, and wave speed relate to mechanical and electromagnetic waves.
• Use quantitative models (including wave speed relations and superposition ideas) to predict wave behavior and outcomes.
• Interpret real-world wave phenomena such as refraction, mirages, sound across landscapes, and seismic signals.

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 mid-ocean ridges generate new oceanic crust through sea-floor spreading.
• Describe how magnetic stripes form from Earth’s changing magnetic field during crust cooling.
• Interpret how magnetic anomaly patterns and radiometric ages support plate motion reconstructions.+ Show more

Learning Objectives

• Explain how gravitational force depends on mass and distance and how that dependence affects motion.
• Describe orbital motion as continual free-fall with changing direction.
• Use inverse-square reasoning to compare gravitational acceleration at different distances.

Learning Objectives

• Explain how primary productivity, decomposition, and nutrient cycling influence energy flow and ecosystem turnover.
• Describe biogeochemical cycles of carbon, nitrogen, and phosphorus and how they connect organisms to the atmosphere, soils, and hydrosphere.
• Apply Alberta-specific ecosystem examples to predict how land-use change and climate variability affect productivity and resilience.

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.
• Use radiation interaction principles to justify design choices in communication and optical sensing systems.

Learning Objectives

• Explain how genes located on chromosomes influence inherited traits.
• Describe how chromosome behavior during cell division supports the transmission of genetic information.
• Use evidence from gene and chromosome structure to interpret patterns of inheritance and variation.

Learning Objectives

• Explain Newton’s third law as force pairs that act on different objects and have equal magnitude and opposite direction.
• Analyze collision scenarios using action–reaction force pairs to predict momentum change and recoil.
• Differentiate how mass differences lead to different accelerations from the same interaction force pair.

Learning Objectives

• Explain how Kepler’s laws describe relationships between a planet’s orbital period and its distance from the star.
• Connect orbital motion to gravitational forces and centripetal acceleration in circular and elliptical approximations.
• Evaluate evidence from multiple planetary systems to support the idea of consistent underlying physics.

Learning Objectives

• Explain how scientific evidence influenced public health and adoption of technologies across different historical periods.
• Analyze how institutions and economic incentives shaped the diffusion of scientific innovations and public perception.
• Evaluate unintended consequences of scientific and policy decisions and connect them to lessons for future adoption.

Learning Objectives

• Differentiate the goals of science and technology when they use overlapping tools and evidence.
• Explain how scientific knowledge can be used as one constraint or input in engineering design.
• Analyze real-world examples (like electricity and medical imaging) to identify science vs technology contributions.

Learning Objectives

• Explain the purpose of ethical review in research and how it supports public trust and participant safety.
• Identify common research-integrity issues (conflicts of interest, data mismanagement, authorship problems) and their consequences.
• Apply ethical principles to situations involving reproducibility, transparent reporting, peer review, and anomalous or negative results.+ Show more

Learning Objectives

• Explain how reduced gene flow and different selective pressures can lead to speciation over long timescales.
• Analyze how environmental change can shift allele frequencies in separated populations.
• Evaluate how barriers (geographic, ecological, or behavioral) reinforce reproductive isolation.+ Show more

Learning Objectives

• Explain how Earth’s internal and surface processes drive plate tectonics over geologic time.
• Interpret how tectonic events (mountain building, earthquakes, volcanism) connect to changes in landforms through weathering and erosion.
• Use evidence from rock layers and present-day features to reason about past geological conditions.

Learning Objectives

• Distinguish scientific claims from pseudoscientific claims by evaluating evidence quality and reasoning.
• Apply criteria for credibility: transparency, empirical support, and alignment between data and interpretation.
• Assess bias, assumptions, and overgeneralization in scientific explanations.+ Show more

Learning Objectives

• Explain how competition for limited resources can change survival and reproduction rates in interacting populations.
• Analyze how predation and other biotic factors can create feedbacks that affect population trajectories over time.
• Use cause-and-effect reasoning to predict how changes in one population can propagate through an ecosystem.

Learning Objectives

• Explain how gene flow and genetic drift change allele frequencies in populations over time
• Analyze how population size and connectivity influence the strength of genetic drift and gene flow
• Evaluate how chance and migration interact with natural selection to produce evolutionary patterns

Learning Objectives

• Explain semi-conservative DNA replication and how leading and lagging strands are synthesized.
• Describe the roles of helicase, primase, and DNA polymerase during replication.
• Analyze how proofreading and repair mechanisms improve replication fidelity and reduce mutation rates.+ Show more

Learning Objectives

• Explain how genetic information in DNA is used to produce messenger RNA (transcription).
• Describe how ribosomes translate mRNA codons into a polypeptide using tRNA and amino acids.
• Connect changes in the DNA sequence to possible effects on protein function and traits.

Learning Objectives

• Evaluate trade-offs in allocating renewable and nonrenewable resources using sustainability criteria
• Apply water budgeting and energy portfolio thinking to predict long-term resource reliability
• Use lifecycle assessment and carrying-capacity constraints to compare waste-handling strategies

Learning Objectives

• Calculate and interpret work done by a force using the relationship between force, displacement, and direction.
• Explain how power describes the rate of energy transfer and compare situations using work and power.
• Apply work-energy and power concepts to real-world examples such as lifting loads and comparing machines.

Learning Objectives

• Explain how greenhouse gases affect Earth’s energy budget by changing the balance between incoming solar radiation and outgoing infrared radiation.
• Interpret radiative forcing and describe how changes in greenhouse gas concentrations can influence climate over time.
• Evaluate positive and negative feedbacks in the climate system and how they can amplify or dampen temperature change.

Learning Objectives

• Explain how radioactive decay and half-life make absolute time dating possible
• Calculate ages using parent/daughter amounts and half-life concepts
• Compare radioactive (absolute) dating with relative dating methods+ Show more

Learning Objectives

• Explain how lifecycle analysis balances environmental, safety, and performance trade-offs over time.
• Connect battery degradation chemistry and thermal limits to engineering decisions in EV systems.
• Evaluate uncertainty in charging efficiency, failure risk, and end-of-life recovery when comparing solutions.

Learning Objectives

• Explain how entropy relates to the dispersal of energy and the number of accessible microstates.
• Use Gibbs free energy to predict spontaneity under constant temperature and pressure.
• Connect changes in Gibbs free energy to equilibrium constants and chemical composition at equilibrium.

Learning Objectives

• Explain how DNA structure supports accurate replication and inheritance of genetic information.
• Describe how transcriptional regulation and translation mechanics convert DNA sequence into functional proteins.
• Analyze how mutation types and DNA repair pathways create genotype-to-phenotype outcomes.+ Show more

Learning Objectives

• Explain how gravity produces Keplerian motion and how orbital energy relates to orbital shape
• Apply conservation of energy and angular momentum concepts to interpret changes in orbits, including resonances
• Analyze how eccentricity and inclination affect seasonal insolation patterns and how tides drive long-term orbital evolution+ Show more

Learning Objectives

• Explain how wave speed, frequency, and wavelength are related using v = fλ.
• Predict how wavelength changes when frequency changes, assuming wave speed is constant.
• Apply frequency–wavelength reasoning to compare electromagnetic waves such as radio and visible light.

Learning Objectives

• Explain why correct citation, authorship criteria, and data provenance are essential for scientific integrity.
• Apply ethical rules for citing sources, reporting methods, archiving data, and using persistent identifiers to improve reproducibility.
• Recognize responsible practices for negative results, sensitive data handling, and avoiding plagiarism.

Learning Objectives

• Explain how a star’s mass influences internal pressure, fusion rate, and overall lifespan.
• Describe the main evolutionary stages of stars after they form from collapsing clouds and reach the main sequence.
• Compare possible end states for massive versus lower-mass stars and how these outcomes enrich the universe with elements.+ Show more

Learning Objectives

• Explain how matter cycles among atmospheric, aquatic, and soil reservoirs through carbon and nitrogen pathways.
• Describe the roles of photosynthesis, respiration, decomposition, nitrogen fixation, nitrification, assimilation, and denitrification.
• Analyze how continual matter movement supports ecosystem stability, while energy flow remains one-directional.

Learning Objectives

• Distinguish between scientific laws and scientific theories based on how they are used to describe and explain natural phenomena.
• Identify how evidence supports both laws and theories and why both are refined over time.
• Apply the law–theory distinction to real-world scientific claims and examples.

Learning Objectives

• Explain how energy transfer and matter cycling interact across the atmosphere, hydrosphere, lithosphere, and cryosphere.
• Use radiative balance and albedo concepts to predict climate and seasonal variability.
• Describe the hydrologic cycle and ocean–atmosphere coupling as mechanisms linking system reservoirs.+ Show more

Learning Objectives

• Explain how mechanical energy transforms between kinetic and potential forms as motion and height change.
• Describe how thermal energy can be produced through friction and relate it to observable temperature changes.
• Use energy transformation ideas to predict behavior from initial and final conditions in real physical systems.

Learning Objectives

• Use constant-acceleration kinematic equations to relate position, velocity, acceleration, and time.
• Interpret and connect motion graphs (x–t, v–t, a–t) with the corresponding equations and assumptions.
• Solve problems by selecting appropriate initial conditions and correctly applying sign conventions.

Learning Objectives

• Explain how scientific models represent systems and relate variables to observed patterns
• Differentiate between diagram, mathematical, and simulation models and describe what each is best used for
• Evaluate a model’s assumptions and limitations and justify how evidence can revise it+ Show more

Learning Objectives

• Explain how heritable variation can lead to population change through natural selection
• Identify how selective pressures (climate, predators, pathogens, and competition) affect survival and reproduction
• Use fitness and trait-frequency change to describe adaptation over generations+ Show more

Learning Objectives

• Explain how societal needs become engineering criteria and how constraints limit solutions.
• Identify qualitative and quantitative criteria used to evaluate an engineering design.
• Use measurable targets and limits to justify design decisions and trade-offs.