Grade 12 Science Worksheets

Learning Objectives

• Understand the processes involved in erosion and sediment transport.
• Identify the factors influencing erosion rates and landscape change.
• Explain connections between upland geology, sedimentary basins, and marine environments.+ Show more

Learning Objectives

• Understand the concept of genetic drift and how it affects allele frequencies in small populations.
• Identify the causes and effects of bottleneck and founder events on genetic diversity.
• Compare the roles of genetic drift and natural selection in evolution.+ Show more

Learning Objectives

• Describe the processes of transcription and translation in gene expression.
• Explain how gene expression is regulated at multiple levels.
• Identify roles of promoters, enhancers, repressors, and epigenetic modifications.+ Show more

Learning Objectives

• Understand the concept of natural selection and how environmental pressures influence evolution.
• Identify patterns of selection such as directional, stabilizing, and disruptive selection.
• Recognize examples of natural selection, including antibiotic resistance, and their impact on populations.+ Show more

Learning Objectives

• Explain the mechanisms that lead to the formation of new species.
• Identify different patterns and evidence of speciation in the fossil record and phylogenetic trees.
• Differentiate between allopatric, sympatric, and other types of speciation.+ Show more

Learning Objectives

• Understand the construction and interpretation of phylogenetic trees.
• Identify shared derived traits and their significance in evolutionary relationships.
• Explain how molecular data and morphological traits are integrated in phylogenetics.+ Show more

Learning Objectives

• Understand sources of genetic variation such as mutations, recombination, and chromosomal changes.
• Explain how gene mutations influence phenotype and inheritance patterns.
• Identify Mendelian and polygenic inheritance as models for trait transmission.+ Show more

Learning Objectives

• Describe trophic relationships in ecosystems and how energy flows between levels.
• Explain the roles of keystone species and trophic cascades in community structure.
• Understand biogeochemical cycles and their impact on nutrient availability and ecosystem productivity.+ Show more

Learning Objectives

• Understand the methods used to organize Earth's history into geological time intervals.
• Identify key concepts such as stratigraphy, fossils, and radiometric dating.
• Explain how Earth's past environmental and biological changes are reconstructed.+ Show more

Learning Objectives

• Understand the key applications of genomics in medicine and conservation.
• Evaluate ethical, social, and ecological considerations of genomic technologies.
• Describe methods used in population sequencing and personalized medicine.+ Show more

Learning Objectives

• Understand how human resource use affects Earth's systems through extraction and land modification.
• Identify environmental impacts of mining, agriculture, and hydrocarbon production.
• Evaluate trade-offs between resource benefits and ecosystem resilience.+ Show more

Learning Objectives

• Describe the types of intermolecular forces and their roles in molecular behavior.
• Differentiate between London dispersion forces, dipole-dipole interactions, and hydrogen bonding.
• Explain how various intermolecular forces influence physical properties such as boiling and melting points.+ Show more

Learning Objectives

• Understand the Hardy-Weinberg principle and its assumptions.
• Calculate expected genotype frequencies using allele frequencies.
• Identify how deviations from Hardy-Weinberg equilibrium indicate evolutionary forces.+ Show more

Learning Objectives

• Understand the principles of radiometric dating and decay of isotopes.
• Identify different methods of radiometric dating such as uranium–lead, potassium–argon, and carbon-14.
• Explain the significance of closure temperature and isotope systematics in dating.+ Show more

Learning Objectives

• Understand the principle of conservation of linear momentum in isolated systems.
• Define momentum and impulse, and explain their relationship.
• Describe centre-of-mass motion and its conservation in negligible external force scenarios.+ Show more

Learning Objectives

• Explain the main types of surface processes including weathering, erosion, transport, and deposition.
• Use process-response diagrams and sediment budgets to relate climate, vegetation, and tectonics to surface change rates.
• Analyze the feedback mechanisms between surface processes and rock uplift, as well as landscape stability thresholds.+ Show more

Learning Objectives

• Analyze multi-body systems with constraints using equations and internal force relations.
• Apply pulley and connected-mass configurations to problem-solving scenarios.
• Describe rigid-body approximations and focus on center-of-mass motion as system descriptors.+ Show more

Learning Objectives

• Understand the principles of calibration, precision, and accuracy in measurement systems.
• Identify methods for quantifying instrument response and characterizing repeatability.
• Explain how systematic biases are corrected through calibration models.+ Show more

Learning Objectives

• Understand the principles of dimensional analysis and scaling relationships in physical systems.
• Explain how nondimensional parameters facilitate model scaling across different spatial and temporal scales.
• Analyze consequences of inappropriate scaling on model predictions and applicability.+ Show more

Learning Objectives

• Understand advanced stoichiometric calculations involving concentration, molarity, and dilution.
• Apply limiting reagent analysis within titration and volumetric contexts.
• Connect laboratory measurements to mole-based predictions using symbolic manipulation and dimensional analysis.+ Show more

Learning Objectives

• Understand the concepts of work, energy, and power in mechanical systems.
• Link force-displacement integrals to kinetic and potential energy.
• Differentiate between conservative and nonconservative forces.+ Show more

Learning Objectives

• Understand energy changes during chemical reactions and the concept of enthalpy.
• Categorize reactions as exothermic or endothermic based on heat transfer.
• Apply calorimetric concepts and specific heat to relate temperature changes to energy.+ 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 how measurement methods support trustworthy conclusions through operational definitions.
• Recognize the importance of consistent units and repeatable procedures in measurements.
• Identify sources of measurement error and methods to control them.+ Show more

Learning Objectives

• Understand the principles of energy transfer in thermal systems.
• Apply calorimetry reasoning to analyze heat exchange.
• Describe how energy conservation applies to physical and chemical changes.+ Show more

Learning Objectives

• Understand the concept and purpose of iterative design cycles.
• Identify the steps involved in refining a design through repeated testing and adjustments.
• Explain how evidence-based decision-making improves design outcomes.+ Show more

Learning Objectives

• Understand how safety standards and protective design influence societal safety.
• Analyze the connection between sustainability and lifecycle resource management.
• Evaluate how reliability impacts public trust and infrastructure costs.+ Show more

Learning Objectives

• Understand how trade-offs impact engineered systems and decision-making.
• Analyze data and models to compare alternatives based on cost, performance, and risk.
• Evaluate long-term effects of engineering choices, including maintenance and safety.+ 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 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

• Understand the different types of interactions among organisms in ecosystems.
• Identify how food webs illustrate energy flow through trophic levels.
• Analyze the impact of population changes on community structure.+ Show more

Learning Objectives

• Understand how energy flows into and out of systems and how it affects temperature.
• Differentiate between exothermic and endothermic reactions based on energy transfer.
• Interpret energy transformations through particle motion and potential energy changes.+ Show more

Learning Objectives

• Understand how different components of Earth's climate system interact through feedback mechanisms.
• Identify examples of positive and negative feedbacks in Earth's environment.
• Explain how feedbacks can influence climate variability and change.+ Show more

Learning Objectives

• Understand how electromagnetic signals propagate as coupled electric and magnetic fields.
• Explain the relationship between frequency, wavelength, and signal behavior during transmission.
• Describe phenomena such as reflection, refraction, attenuation, and dispersion in electromagnetic wave propagation.+ Show more

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 the key performance metrics used in design optimization.
• Identify how constraints influence design decisions.
• Analyze trade-offs involved in optimizing engineering systems.+ Show more

Learning Objectives

• Understand the processes of erosion, weathering, and sediment transport.
• Identify landforms created by erosion and deposition.
• Interpret geological records through surface patterns and sediment layers.+ Show more

Learning Objectives

• Understand and apply scientific communication conventions such as significant figures, units, and labeled diagrams.
• Organize and present data clearly using tables and graphs.
• Describe methods using precise terminology and measured quantities.+ Show more

Learning Objectives

• Understand that during phase changes, energy is used to alter particle spacing and interactions rather than change temperature.
• Explain why heating curves show temperature plateaus at phase transitions like melting and boiling.
• Describe how the particle model accounts for phase changes and energy requirements.+ Show more

Learning Objectives

• Understand how reaction yield is influenced by reaction conditions.
• Connect microscopic particle behavior to macroscopic reaction outcomes.
• Predict reaction yield based on stoichiometry and limiting factors.+ 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

• 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 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 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 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

• 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

• Understand how sedimentary deposits record environmental interactions and changes.
• Identify different sediment types and what they reveal about past climates.
• Interpret proxies such as isotopic ratios and mineral assemblages in sediment analysis.+ 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.