Grade 12 Science Worksheets

Learning Objectives

• Understand key molecular techniques such as PCR, gel electrophoresis, and sequencing.
• Identify applications of recombinant DNA and CRISPR-Cas systems in biotechnology and medicine.
• Evaluate ethical and safety considerations in deploying modern molecular techniques.+ Show more

Learning Objectives

• Connect the first and second laws of thermodynamics to chemical systems using internal energy, enthalpy, entropy, and Gibbs free energy.
• Predict spontaneity and equilibrium direction using temperature-dependent free energy changes.
• Interpret relationships between Gibbs free energy changes and equilibrium constants, including how sign and magnitude relate to reaction direction.

Learning Objectives

• Understand the structure and function of mitochondria in energy production.
• Analyze how organelle compartmentation affects metabolic pathways.
• Compare roles of mitochondria, chloroplasts, endomembranes, and peroxisomes.+ Show more

Learning Objectives

• Understand the key concepts and approaches used in climate modeling, including energy-balance and radiative-convective models.
• Identify the components and parameterizations essential for simulating planetary atmospheres and climate states.
• Explain how model validation techniques utilize paleoclimate proxies, instrumental records, and sensitivity experiments.+ Show more

Learning Objectives

• Understand the structural components of the cytoskeleton, membrane interactions, and intercellular junctions.
• Explain how molecular motors, filament dynamics, and tensile forces contribute to cell shape and function.
• Describe how cellular architecture supports resilience, motility, and intracellular trafficking.+ Show more

Learning Objectives

• Understand the chemical composition and three-dimensional structures of biological macromolecules.
• Explain how molecular form determines function in proteins, nucleic acids, carbohydrates, and lipids.
• Describe the physicochemical properties underlying molecular interactions such as folding, complementarity, and stability.+ Show more

Learning Objectives

• Explain how lipid bilayer organization and membrane proteins create selective permeability and maintain concentration gradients.
• Compare passive transport mechanisms (diffusion, osmosis, facilitated diffusion) with active transport and how they relate to energy input.
• Use quantitative relationships involving concentration differences and electrochemical forces to interpret membrane potential.+ Show more

Learning Objectives

• Explain the structural organization of lipid bilayers and their impact on membrane fluidity and permeability.
• Describe the roles of membrane proteins in transport, signaling, and maintaining cellular homeostasis.
• Identify mechanisms of passive and active transport across membranes and relate them to electrochemical gradients.+ Show more

Learning Objectives

• Analyze how human resource use affects Earth systems through extraction, land modification, and emissions.
• Evaluate environmental trade-offs involved in resource extraction and management.
• Identify strategies for reducing environmental impact and promoting sustainability in resource use.+ Show more

Learning Objectives

• Understand the principles of responsible conduct in research.
• Identify key components of ethical review and data management.
• Analyze case studies involving conflicts of interest and ethical breaches.+ Show more

Learning Objectives

• Explain how natural and human factors shift Earth’s energy balance over different timescales
• Distinguish between greenhouse warming and cooling effects from aerosols and volcanic particles
• Describe how climate patterns such as El Niño influence weather and long-term trends

Learning Objectives

• Understand the basic principles of electrostatic forces
• Identify charges on atoms and molecules
• Explain how electrostatic attractions and repulsions influence substance properties+ Show more

Learning Objectives

• Explain how oscillating electric and magnetic fields transmit energy as electromagnetic waves through space and guided media
• Relate frequency and wavelength to wave behavior, including reflection and refraction at boundaries
• Analyze how attenuation and dispersion affect signal strength and bandwidth over distance+ Show more

Learning Objectives

• Understand the surface features and processes shaping Mars
• Interpret remote sensing data related to planetary geology
• Differentiate between various volcanic, tectonic, and erosion features on Mars+ Show more

Learning Objectives

• Understand the mechanisms of thermohaline and wind-driven ocean circulation.
• Identify how ocean currents influence regional climate and phenomena like El Niño.
• Explain the role of salinity, density stratification, and mixing in biogeochemical cycling.+ Show more

Learning Objectives

• Understand the principles of quantum numbers and their significance in electron placement.
• Identify the shapes and orientations of different atomic orbitals.
• Apply the Aufbau principle, Pauli exclusion principle, and Hund’s rule to determine electron configurations.+ Show more

Learning Objectives

• Understand how Le Chatelier’s principle predicts the response of equilibrium systems to external stresses.
• Identify how changes in concentration, pressure, and temperature affect chemical equilibria.
• Explain the effect of catalysts on equilibrium systems without altering the position.+ Show more

Learning Objectives

• Understand the principle of enthalpy conservation in Hess cycles.
• Explain how Hess cycles utilize chemical reaction pathways to determine enthalpy changes.
• Identify the components involved in thermochemical cycles such as formation, atomization, and ionization.+ Show more

Learning Objectives

• Understand the mechanisms of energy transfer such as radiative balance, conduction, convection, and latent heat.
• Relate energy pathways to weather patterns, ocean currents, and geothermal processes.
• Analyze simple energy budgets, flux diagrams, and block models to connect micro- and macro-scale phenomena.+ Show more

Learning Objectives

• Understand the fundamental principles of chemical equilibrium in reversible reactions.
• Explain how reaction conditions influence the position of equilibrium.
• Interpret the meaning and significance of the equilibrium constant in chemical reactions.+ Show more

Learning Objectives

• Understand the concept of equilibrium constants and their applications.
• Differentiate between the reaction quotient Q and the equilibrium constant K.
• Explain how temperature influences equilibrium and Gibbs free energy relationships.+ Show more

Learning Objectives

• Understand how societal needs are translated into measurable criteria and constraints in engineering solutions.
• Identify key qualitative and quantitative criteria used in designing solutions for global challenges.
• Analyze the importance of balancing societal needs with environmental, safety, and cost constraints.+ Show more

Learning Objectives

• Explain the organization and function of lipid bilayers and membrane proteins in cellular membranes.
• Describe mechanisms of passive and active transport across membranes and their roles in maintaining electrochemical gradients.
• Apply concepts of membrane potential, permeability, and ion coupling in cellular signaling and interface exchange.+ Show more

Learning Objectives

• Explain the principles of enzyme kinetics, allosteric modulation, feedback inhibition, and hormonal regulation in metabolic pathways.
• Analyze how these control mechanisms maintain metabolic homeostasis under varying internal and external conditions.
• Interpret rate equations, flux diagrams, and steady-state models to evaluate pathway responses.+ Show more

Learning Objectives

• Understand the molecular mechanisms controlling gene expression, including transcription factors, epigenetics, and post-translational modifications.
• Analyze how regulatory networks influence phenotypic variability and organismal responses.
• Interpret diagrams and quantitative descriptions related to gene regulation.+ Show more

Learning Objectives

• Explain the process of electromagnetic induction as described by Faraday's law.
• Describe how moving conductors and alternating currents produce induced voltages.
• Analyze the principles underlying generators, transformers, and inductors in electromagnetic induction.+ Show more

Learning Objectives

• Describe the structure and function of DNA in heredity.
• Explain the processes of DNA replication, transcription, and translation.
• Identify mutation types and their impact on genetic information.+ Show more

Learning Objectives

• Explain molecular orbital theory and band concepts as extensions of valence-bond descriptions.
• Describe bonding order, delocalization, and electronic structures in diatomic and extended systems.
• Use energy-level diagrams and symmetry considerations to predict magnetic behavior, bond strength, and electronic transitions.+ Show more

Learning Objectives

• Explain how apparent brightness and angular size relate to distance using consistent cosmic scale ideas.
• Describe how parallax provides nearby distances and how standard candles and redshift support indirect distance estimates.
• Connect light-travel time to the idea that we observe objects at different points in cosmic history.

Learning Objectives

• Understand how molecular genetics, gene regulation, and evolutionary mechanisms interact to produce biological outcomes.
• Analyze examples such as herbicide resistance in weeds to understand mutation, selection, gene flow, and population responses.
• Evaluate how DNA-level variations influence gene expression, fitness, and ecosystem effects for holistic evolutionary assessment.+ Show more

Learning Objectives

• Summarize the key processes involved in the formation and evolution of the Solar System.
• Identify observational evidence used in studying planetary characteristics and formation theories.
• Explain the concepts of accretion, planetary differentiation, and protoplanetary disks.+ Show more

Learning Objectives

• Explain different types of chemical bonding: ionic, covalent, and metallic.
• Predict bond polarity based on electronegativity differences.
• Describe the concepts of bond order, bond energy, and their relationship to bond strength and length.+ Show more

Learning Objectives

• Interpret stratigraphic sequences and fossil assemblages to reconstruct Earth's history.
• Identify how radiometric age data contribute to understanding geologic processes.
• Evaluate sedimentary facies models and cross-section interpretations in correlating depositional environments.+ Show more

Learning Objectives

• Understand the mechanisms of weathering, erosion, transport, and deposition in shaping landscapes.
• Analyze how climate, vegetation, and tectonics influence rates of surface change and landscape evolution.
• Evaluate human impacts on sediment fluxes and surface processes.

Learning Objectives

• Understand the processes behind geologic and atmospheric hazards such as earthquakes, tsunamis, and storms.
• Analyze how hazard probability, landscape vulnerability, and resilience strategies affect risk reduction.
• Evaluate approaches like land-use planning, early-warning systems, and engineered interventions in hazard scenarios.+ Show more

Learning Objectives

• Understand the major components and fluxes of Earth's systems, including atmosphere, hydrosphere, biosphere, and geosphere.
• Analyze energy and mass balance models used to describe interactions among Earth's subsystems.
• Interpret conceptual models of steady-state and transient responses in Earth systems.+ Show more

Learning Objectives

• Understand the main forcings that influence climate variability and change.
• Analyze the roles of greenhouse gases, volcanic aerosols, solar irradiance, and land-surface alterations in climate forcing.
• Interpret radiative forcing metrics and feedback mechanisms such as ice-albedo and water vapor effects.+ Show more

Learning Objectives

• Understand the role of models in representing Earth processes across various timescales.
• Analyze the construction, validation, and limitations of energy-balance, circulation, and landscape evolution models.
• Interpret model outputs through diagrams and uncertainty quantification techniques.+ Show more

Learning Objectives

• Explain the mechanisms of energy transfer such as radiative balance, conduction, convection, and latent heat within Earth systems.
• Relate energy transfer processes to observable phenomena like weather patterns, ocean currents, and geothermal activity.
• Use quantitative reasoning to analyze energy budgets, flux diagrams, and block models connecting microscale to macroscale geophysical phenomena.

Learning Objectives

• Describe the main components of large-scale atmospheric cells and their roles in climate patterns.
• Explain how thermal gradients and Coriolis effects influence pressure systems and storm tracks.
• Connect atmospheric circulation patterns to observed weather regimes and seasonal climate shifts.+ Show more

Learning Objectives

• Analyze the interactions between geologic resources, extraction processes, and societal demands.
• Assess the sustainability constraints of mineral, groundwater, and hydrocarbon systems using models and data representation.
• Evaluate trade-offs among resource availability, environmental impact, and technological adaptation in resource management.

Learning Objectives

• Understand and describe displacement, velocity, and acceleration as vector quantities in one dimension.
• Interpret position–time and velocity–time graphs to analyze motion.
• Apply symbolic kinematic equations for constant acceleration in problem-solving.+ Show more

Learning Objectives

• Explain the principles of electron-pair repulsion and how they determine molecular shape.
• Identify different molecular geometries based on electron domain and bond angles.
• Describe the impact of molecular geometry on physical properties and reactivity.+ Show more

Learning Objectives

• Describe the structure of nucleic acids and their roles in genetics.
• Explain the mechanisms of DNA replication and mutation.
• Analyze the molecular basis of genome organization and sequence variation.+ Show more

Learning Objectives

• Define linear momentum and impulse as conserved quantities in isolated systems.
• Explain momentum conservation in elastic and inelastic collisions using algebraic and vector models.
• Relate pre- and post-collision velocities through impulse–momentum relations.+ Show more

Learning Objectives

• Understand the rotational analogs of linear quantities such as torque, moment of inertia, and angular momentum.
• Develop equations linking net torque to angular acceleration for rigid bodies.
• Analyze energy transfer between translational and rotational modes in rolling and compound systems.+ Show more

Learning Objectives

• Understand the principles of stratigraphy and fossil assemblages
• Interpret stratigraphic sequences and correlate fossil evidence
• Learn the basics of radiometric dating and its role in determining Earth’s history+ Show more

Learning Objectives

• Understand the fundamental principles linking electric charges, currents, and magnetic fields.
• Explain how time-varying electromagnetic fields produce waves and their significance.
• Describe how electromagnetic waves manifest as light and other forms of radiation.+ Show more