Grade 12 Worksheets

Learning Objectives

• Understand the roles of independent and dependent variables in experiments.
• Identify how controls help isolate the effect of variables.
• Describe the importance of controls and variables in experimental design.+ Show more

Learning Objectives

• Describe the roles of different organelles in energy transformation, biosynthesis, and catabolism.
• Compare and contrast mitochondrial, chloroplast, endomembrane, and peroxisomal functions.
• Explain how organelle structure influences metabolic efficiency and measurable outputs.

Learning Objectives

• Understand the concept of an expanding universe and its observational evidence.
• Interpret galaxy redshift data and relate it to cosmic expansion.
• Describe how cosmological models explain the universe's age, size, and structure formation.+ Show more

Learning Objectives

• Understand how to construct explanations that connect evidence to reasoning.
• Identify specific observations and data summaries that support claims.
• Analyze how variables and controls justify causal interpretations.+ Show more

Learning Objectives

• Describe the particle reaction model and how it explains chemical reactions.
• Identify microscopic changes such as bond breaking, formation, and energy shifts during reactions.
• Connect observable evidence like color change, gas formation, and temperature shifts to microscopic particle interactions.+ Show more

Learning Objectives

• Understand the concept of activation energy and how it affects reaction rates.
• Explain how catalysts provide alternative pathways with lower activation energy.
• Interpret reaction energy profiles and the significance of transition states.+ Show more

Learning Objectives

• Understand the concept of energy system efficiency and how it is measured.
• Identify common loss pathways such as heat dissipation in energy systems.
• Explain the role of insulation, surface area, and control systems in improving efficiency.+ Show more

Learning Objectives

• Understand how reaction rate is influenced by particle collisions.
• Explain the effect of concentration, temperature, and surface area on collision frequency.
• Describe how microscopic collision statistics determine the rate of product formation.+ Show more

Learning Objectives

• Understand the key material properties relevant to engineering design.
• Identify how properties like strength, toughness, and corrosion resistance influence material choice.
• Analyze trade-offs between lightweight materials and environmental durability.+ Show more

Learning Objectives

• Understand how gravity influences planetary and satellite orbits.
• Interpret observational data related to orbital periods and velocities.
• Explain the relationship between mass, distance, and orbital speed in celestial systems.+ Show more

Learning Objectives

• Understand how chromosomes segregate during meiosis and influence inheritance patterns.
• Explain the concepts of dominance, recessiveness, and allele combinations in offspring.
• Use Punnett squares to predict genetic outcomes and trait probabilities.+ Show more

Learning Objectives

• Understand how to analyze claims in relation to evidence in scientific arguments.
• Identify missing links between data patterns and conclusions.
• Assess whether uncertainty and controls are properly acknowledged and justified.+ Show more

Learning Objectives

• Explain the process of electron transfer in oxidation and reduction reactions.
• Identify oxidizing and reducing agents in chemical reactions.
• Describe how oxidation states are used to track electron changes.+ Show more

Learning Objectives

• Understand how statistical tools and measures of uncertainty strengthen scientific claims.
• Describe central tendency and spread as measures of data variability.
• Explain confidence statements and their role in linking observed data to population ranges.+ Show more

Learning Objectives

• Understand how models are used to predict outcomes under constraints in engineering and design.
• Identify different types of models such as diagrams, scaling, and physics-based representations.
• Analyze how uncertainty and assumptions influence decision-making in modeling.+ Show more

Learning Objectives

• Understand how adaptations can increase survival and reproduction in specific environments.
• Identify and explain tradeoffs involved in evolutionary adaptations.
• Analyze how environmental factors influence trait success and frequency.+ Show more

Learning Objectives

• Understand how parallax, standard candles, and redshift are used to measure cosmic distances.
• Interpret telescope measurements to estimate the positions and sizes of celestial objects.
• Explain the relationship between light travel time and cosmic history.+ Show more

Learning Objectives

• Understand how to use qualitative models to represent data relationships.
• Identify different types of models such as proportional, linear, and functional.
• Interpret graphical representations to analyze data trends.+ Show more

Learning Objectives

• Interpret axes, scales, and units on scientific graphs.
• Identify trend lines, slopes, and intercepts to evaluate data claims.
• Distinguish between meaningful patterns and random scatter in data visuals.+ Show more

Learning Objectives

• Understand the different mechanisms that influence allele frequencies in populations.
• Describe how genetic drift, gene flow, and natural selection contribute to evolution.
• Analyze the effects of small population size on genetic variation.+ Show more

Learning Objectives

• Understand the mechanisms that generate genetic variation within populations.
• Identify how mutations, recombination, and sexual reproduction contribute to genetic diversity.
• Explain the role of differential survival and reproduction in changing allele frequencies.

Learning Objectives

• Understand the fundamental properties of waves including wavelength, frequency, phase velocity, and amplitude.
• Explain the principle of superposition and how interference leads to phenomena like standing waves.
• Apply sinusoidal models and phasor reasoning to describe wave motion and energy transport.+ Show more

Learning Objectives

• Understand mechanisms that alter allele frequencies such as natural selection, genetic drift, gene flow, and mutation.
• Analyze case examples illustrating phenotypic shifts and quantitative models of evolution.
• Evaluate evidence from morphology, molecular markers, and experiments to explain population-driven patterns.

Learning Objectives

• Explain the major processes of geologic evolution including plate motion, internal heat, and erosion.
• Identify different types of plate boundaries and their associated geological activities.
• Describe how evidence like rock ages and magnetic patterns support plate tectonics models.+ Show more

Learning Objectives

• Analyze how variations in effective nuclear charge influence periodic trends.
• Compare trends in ionization energy, electron affinity, and atomic radius across periods and down groups.
• Apply graphical and quantitative methods to rationalize anomalies in periodic patterns.+ Show more

Learning Objectives

• Describe the interactions between geologic resources and societal demands.
• Explain ore deposit models, aquifer properties, and basin maturation.
• Assess trade-offs among resource availability, environmental impacts, and technology.+ Show more

Learning Objectives

• Interpret stratigraphic sequences, fossil assemblages, and radiometric data to understand Earth's history.
• Analyze sedimentary facies, cross-sections, and isotopic systematics for correlation and reconstruction.
• Evaluate the limitations of temporal resolution, unconformities, and evidence integration in geologic timelines.+ Show more

Learning Objectives

• Understand the application of Hardy–Weinberg equilibrium and selection coefficients in evolutionary change.
• Analyze the roles of mutation, genetic drift, and recombination in genetic variation.
• Interpret allele frequency trajectories and fitness landscapes to describe adaptive dynamics.+ Show more

Learning Objectives

• Explain the concept of chemical equilibrium as a dynamic process balancing forward and reverse reactions.
• Determine the significance of the equilibrium constant and how it describes reaction composition.
• Relate concentration and pressure effects to shifts in equilibrium position.+ Show more

Learning Objectives

• Describe the principal types of chemical bonding: ionic, covalent, and metallic.
• Explain how charge distribution, lattice structures, and shared electrons define bond types.
• Relate bond types to bulk properties such as electrical conductivity, melting point, and solubility.+ Show more

Learning Objectives

• Understand how models connect molecular processes to ecosystem patterns.
• Analyze the effects of changes in one system level on others using different modeling techniques.
• Apply coupled differential equations, network models, and graphical representations to biological systems.+ Show more

Learning Objectives

• Describe the different mechanisms of energy transfer within Earth systems.
• Explain how radiative balance, conduction, convection, and latent heat influence weather, ocean currents, and geothermal activity.
• Use quantitative reasoning to analyze energy budgets and flux diagrams.+ Show more

Learning Objectives

• Explain molecular orbital theory and its application to diatomic and extended systems.
• Analyze bonding order, delocalization, and electronic structure using energy-level diagrams.
• Differentiate between localized and delocalized bonding models and their empirical implications.+ Show more

Learning Objectives

• Identify different sources and types of uncertainty in scientific measurements.
• Distinguish between systematic bias, random error, and conceptual model uncertainty.
• Explain exemplars such as instrument drift and sampling variability to illustrate propagation of uncertainty.+ Show more

Learning Objectives

• Identify major Earth system components and understand their fluxes across atmosphere, hydrosphere, biosphere, and geosphere.
• Explain how energy and mass balance models link solar input, ocean heat transport, and biogeochemical cycles.
• Describe steady-state and transient responses of Earth systems and the coupling mechanisms involved.+ Show more

Learning Objectives

• Explain the principles and procedures for assigning electron configurations to atoms.
• Identify orbital filling order and apply Hund's rule in electron assignments.
• Describe common exceptions in electron configurations, especially in transition elements.+ Show more

Learning Objectives

• Understand the processes involved in the rock cycle, including melting, crystallization, weathering, erosion, and deposition.
• Identify the different rock types and how they transform through geological processes.
• Explain how surface and deep Earth processes influence landscape evolution.+ Show more

Learning Objectives

• Explain the principles of valence-shell electron-pair repulsion and hybridization in predicting molecular shapes.
• Describe how molecular geometry influences polarity and symmetry.
• Analyze three-dimensional structures and schematics to relate lone pairs, bonds, and resonance to overall shape.+ Show more

Learning Objectives

• Understand the fundamental mechanisms that drive evolution, including natural selection, genetic drift, gene flow, and mutation.
• Identify and interpret different types of evidence that support evolutionary theory such as fossils, comparative anatomy, biogeography, and molecular data.
• Explain how evolution leads to biodiversity and adaptation in various environments.

Learning Objectives

• Understand the fundamental concepts of uniform and nonuniform circular motion.
• Explain the vectors involved in circular motion and how they produce centripetal acceleration.
• Derive and apply the formulas relating velocity, radius, and acceleration in circular motion.+ Show more

Learning Objectives

• Understand the factors that influence changes in population size and structure.
• Identify patterns like exponential and logistic growth in populations.
• Describe interactions such as predation, competition, and mutualism among species.+ Show more

Learning Objectives

• Understand the principles of allele frequency changes under various evolutionary forces.
• Recognize the effects of gene flow, mutation, migration, and genetic drift on populations.
• Analyze how barriers and migration influence genetic structure and local adaptation.+ Show more

Learning Objectives

• Interpret proxy records from ice cores, sediments, tree rings, and speleothems to understand past climate variability.
• Identify isotopic, chemical, and biological indicators used in paleoclimate reconstruction.
• Connect proxy signals to climate forcings like orbital cycles and volcanic events.+ Show more

Learning Objectives

• Understand key methods used in resource assessment of mineral and energy deposits.
• Identify environmental considerations involved in resource extraction and evaluation.
• Analyze the balance between resource benefits and environmental impacts.+ Show more

Learning Objectives

• Explain how Lorentz forces produce torque in electric motors.
• Describe how magnetic field gradients enable imaging techniques like magnetic resonance.
• Identify the principles behind magnetic storage, induction sensing, and the Hall effect.+ Show more

Learning Objectives

• Understand the main forcings driving climate variability and change.
• Identify different climate forcing mechanisms such as greenhouse gases, volcanic aerosols, and solar irradiance.
• Explain feedback processes like ice-albedo and water vapor feedbacks.+ Show more

Learning Objectives

• Understand molecular mechanisms controlling gene expression, including transcription and translation.
• Identify roles of promoter architecture, transcription factors, epigenetic modifications, alternative splicing, and post-translational regulation.
• Analyze how regulatory networks modulate gene expression in time and space.+ Show more

Learning Objectives

• Understand the concepts of electric charge, current, and potential difference.
• Learn about simple circuit models involving resistors, voltage sources, and conductors.
• Apply Ohm’s law and analyze series and parallel resistor combinations.+ Show more