Grade 12 Science Worksheets

Learning Objectives

• Explain how natural selection changes allele frequencies across generations
• Identify scientific evidence that supports natural selection using real-world examples
• Use data patterns (time, populations, environments) to infer differential fitness+ Show more

Learning Objectives

• Understand the basic components and mechanisms driving large-scale atmospheric circulation patterns.
• Describe the effects of Coriolis force, jet streams, and frontal systems on weather variability.
• Explain the concepts of atmospheric pressure, pressure gradients, and thermal structure in climate dynamics.+ Show more

Learning Objectives

• Define natural selection and explain its role in evolution.
• Identify different patterns of natural selection: directional, stabilizing, and disruptive.
• Recognize examples of natural selection in real-world scenarios.+ Show more

Learning Objectives

• Understand and classify ionic, covalent, and metallic bonding based on electrostatic interactions, lattice energy, and polarity.
• Apply Lewis structures, formal charge assessments, and VSEPR theory to determine molecular shapes and polarity.
• Relate different bonding types to macroscopic properties such as melting points, conductivity, and solubility using lattice models and molecular orbital concepts.

Learning Objectives

• Understand the concept of measurement uncertainty and how to quantify it.
• Identify different types of measurement errors and their impact on data accuracy.
• Learn procedures for calibration and propagation of uncertainty in calculations.+ Show more

Learning Objectives

• Explain how redshift relates to wavelength stretching and the expansion of space.
• Interpret the distance–redshift relationship and what it implies about cosmic history.
• Evaluate how observations across multiple wavelengths support models of an expanding universe.+ Show more

Learning Objectives

• Understand the basic principles of biotechnology ethics
• Identify key issues related to cloning, genome editing, and recombinant organisms
• Recognize ethical, legal, and social considerations in biotechnology applications

Learning Objectives

• Describe contaminant movement through dissolution and sorption
• Explain volatilization and biodegradation in contaminant fate
• Compare kinetic and equilibrium processes affecting distribution+ Show more

Learning Objectives

• Explain the concept of uniform and nonuniform circular motion, including the roles of centripetal and tangential accelerations.
• Develop and apply quantitative relationships among speed, radius, and acceleration in circular motion scenarios.
• Connect theoretical principles to real-world examples such as banked turns and orbital motion, using free-body diagrams and vector analysis.+ Show more

Learning Objectives

• Classify ionic, covalent, and metallic bonding using electrostatic attraction, lattice models, and electron-sharing ideas
• Use Lewis structures, formal charge, and VSEPR to predict molecular shape and relate it to polarity and intermolecular forces
• Explain how bonding type influences melting point, conductivity, and solubility using lattice energy and (where appropriate) molecular orbital concepts

Learning Objectives

• Understand the principles of radiometric dating and how decay rates are used to determine the ages of rocks and minerals.
• Identify different radiometric methods such as uranium–lead, potassium–argon, and carbon-14 dating, and their applications.
• Explain the concepts of half-life, closure temperature, and isotope systematics in dating techniques.+ Show more

Learning Objectives

• Understand the concepts of equilibrium constant (Kc and Kp) and their applications.
• Calculate reaction quotients and predict reaction direction.
• Explain how temperature influences equilibrium constants through thermodynamics.+ Show more

Learning Objectives

• Understand natural and human factors influencing Earth's climate over different timescales.
• Identify how greenhouse gases and aerosols affect the greenhouse effect and climate.
• Explain the role of volcanic eruptions and orbital variations in climate change.+ Show more

Learning Objectives

• Explain the principles of laminar and turbulent flow in fluids.
• Apply the continuity equation to real-world scenarios like river flow and groundwater movement.
• Describe Bernoulli's principle and its relevance to atmospheric patterns and flood risks.+ Show more

Learning Objectives

• Understand the structure and function of nucleic acids.
• Explain the mechanisms of DNA replication and repair pathways.
• Describe how mutations and sequence variation influence heritable traits.+ Show more

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

• 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

• Distinguish precision and accuracy and identify sources of systematic and random error in experimental measurements
• Apply rules for significant figures when reporting measured quantities and uncertainties
• Use uncertainty concepts to propagate error through calculations and interpret uncertainty bounds or confidence intervals+ 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

• Describe how Hardy–Weinberg equilibrium models genetic stability in populations.
• Explain the role of mutation and selection coefficients in evolutionary change.
• Analyze the effects of genetic drift and recombination on genetic variation.+ Show more

Learning Objectives

• Understand the key organelles and structures within prokaryotic and eukaryotic cells.
• Describe the structure-function relationships of cellular components like mitochondria, chloroplasts, and the endoplasmic reticulum.
• Identify microscopy techniques used to study cellular organization and organelle morphology.+ Show more

Learning Objectives

• Understand different forms of energy and their properties.
• Explain the principles of energy conservation and transformation.
• Analyze the efficiency of various energy systems, including fossil fuels and renewable sources.+ Show more

Learning Objectives

• Explain how stratigraphy, radiometric ages, paleomagnetism, structural relationships, and fossils work together in integrated reconstruction.
• Use multiple evidence types to build a chronological sequence of deformation, magmatism, and sedimentation.
• Justify how integrated reconstructions constrain plate-motion and paleoenvironments.

Learning Objectives

• Understand the importance of empirical evidence in scientific claims
• Identify evidence presented to support scientific conclusions
• Differentiate between supported and unsupported claims based on evidence+ Show more

Learning Objectives

• Understand the role of mathematical and computational models in environmental forecasting.
• Identify key concepts such as parameterization, calibration, validation, and sensitivity analysis.
• Recognize the limitations and assumptions inherent in simplified versus complex models.+ Show more

Learning Objectives

• Understand key wave parameters such as wavelength, frequency, and amplitude.
• Explain the principles of superposition, interference, and standing waves.
• Analyze wave phenomena using sinusoidal and phasor representations.+ Show more

Learning Objectives

• Understand the principles of electron-pair repulsion and their role in determining molecular shapes.
• Apply VSEPR models to predict bond angles and molecular geometries in complex molecules.
• Analyze the influence of hybridization on molecular structure and reactivity patterns.+ Show more

Learning Objectives

• Explain how surface reflectivity (albedo) influences Earth’s energy balance and near-surface temperatures.
• Describe at least two albedo-related feedback mechanisms involving snow, ice, and temperature change.
• Evaluate how clouds affect reflected and absorbed solar radiation and contribute to climate variability.

Learning Objectives

• Understand and apply the mole concept to relate mass, moles, and particles.
• Perform calculations involving molar mass, empirical and molecular formulas, and percent composition.
• Solve limiting reagent, theoretical yield, and percent yield problems using stoichiometric relationships.+ Show more

Learning Objectives

• Understand the concepts of displacement, velocity, and acceleration as vector quantities.
• Interpret position–time and velocity–time graphs.
• Apply symbolic kinematic equations for constant acceleration.+ Show more

Learning Objectives

• Understand different types of community interactions such as competition, predation, parasitism, mutualism, and commensalism.
• Explain how energy flows through food webs and the concept of trophic efficiency.
• Identify examples of community interactions in Alberta ecosystems, such as aspen-mycorrhizal associations and wolf-elk-vegetation cascades.+ Show more

Learning Objectives

• Explain how inherited variation and differential reproductive success drive natural selection over multiple generations.
• Use allele frequency change to describe how populations become adapted to local environments.
• Distinguish natural selection from changes caused by an organism’s lifetime experiences.

Learning Objectives

• Identify key structural differences between prokaryotic and eukaryotic cells.
• Describe the functions of major organelles such as mitochondria, chloroplasts, endoplasmic reticulum, Golgi apparatus, and ribosomes.
• Understand the composition of cell membranes and the concept of cellular compartmentalization.+ Show more

Learning Objectives

• Understand the concept of plate tectonics and how it explains the movement of Earth's lithospheric plates.
• Identify the types of plate boundaries and their characteristic geological features.
• Explain processes such as sea-floor spreading, subduction zones, and fault systems.+ Show more

Learning Objectives

• Describe genetic strategies that improve crop resilience
• Identify how genetic markers support pathogen diagnosis
• Explain microbial degradation of hydrocarbons in bioremediation+ Show more

Learning Objectives

• Understand the components and functions of cytoskeletal networks, membrane interactions, and intercellular junctions.
• Describe the role of molecular motors, filament dynamics, and tensile forces in maintaining cell structure.
• Connect cell architecture to cellular resilience, motility, and trafficking using microscopy and force measurements.+ Show more

Learning Objectives

• Explain how DNA sequence information connects to RNA and protein products during replication, transcription, and translation.
• Describe how promoter elements and transcriptional regulation shape patterns of gene expression.
• Compare mutation types and predict how they can affect phenotype through genotype-to-function pathways.+ Show more

Learning Objectives

• Explain how natural selection, genetic drift, and gene flow can change allele frequencies in populations
• Compare the conditions under which genetic drift and gene flow are most likely to produce evolutionary change
• Use evolutionary mechanisms to interpret patterns of diversification and relatedness among populations+ Show more

Learning Objectives

• Understand the organization of pigments and electron transport chains in photosynthesis.
• Describe how light energy is captured and converted in chloroplasts.
• Relate photon absorption to biochemical outputs like the Calvin cycle.+ Show more

Learning Objectives

• Understand the importance of evidence in supporting scientific claims
• Identify various types of observations and data used in constructing explanations
• Learn how to evaluate and address alternative explanations+ Show more

Learning Objectives

• Identify key components of cell membranes and their functions.
• Understand the organization of the lipid bilayer and membrane proteins.
• Explain passive and active transport mechanisms across membranes.+ Show more

Learning Objectives

• Explain how carrying capacity sets an upper limit on population size in an ecosystem.
• Describe how resource availability affects birth rates, death rates, and population growth.
• Use simple mathematical ideas to connect assumptions about births, deaths, and limits to population outcomes.

Learning Objectives

• Understand the structure and organization of lipid bilayers in cell membranes.
• Identify the roles of different membrane proteins.
• Explain mechanisms of passive and active transport across membranes.+ Show more

Learning Objectives

• Describe the concept of a gravitational field around a mass.
• Explain how gravitational potential energy is defined in two-body systems.
• Analyze how field strength varies with distance from celestial bodies.+ Show more

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

• Construct conceptual and quantitative models to represent real systems and identify key variables and parameters.
• Estimate parameters, validate model outputs against empirical data, and refine model structure to improve predictive performance.
• Compare deterministic and stochastic modeling approaches, and use dimensional analysis, scaling, and sensitivity testing to assess robustness.

Learning Objectives

• Identify and describe the components of projectile velocity.
• Understand how initial launch angle affects the projectile's path.
• Explain the independence of horizontal and vertical motions under gravity.+ Show more

Learning Objectives

• Explain the concept of intracellular compartmentation and its importance in cell function.
• Compare the roles of mitochondria, chloroplasts, endomembrane system, and peroxisomes in energy transformation, biosynthesis, and catabolism.
• Understand how organelle structure and transport systems influence metabolic fluxes and signal transduction.+ Show more