Science Worksheets

Learning Objectives

• Explain how geographic isolation and reproductive barriers can lead to population divergence and speciation.
• Compare allopatric and sympatric speciation and describe adaptive radiation as a driver of diversification.
• Interpret phylogenetic trees using concepts like monophyly, homology, and tree topology.

Learning Objectives

• Explain the difference between criteria (desired outcomes) and constraints (limitations) in engineering design.
• Identify qualitative versus quantitative criteria in real-world problem statements.
• Interpret how constraints such as safety, cost, and environmental limits affect feasible solutions.

Learning Objectives

• Explain how matter and energy move among Earth’s geosphere, hydrosphere, atmosphere, and biosphere using models.
• Describe feedbacks (positive and negative) that change system behavior, such as ice-albedo effects.
• Use examples like sediment transport and nutrient cycling to predict observable patterns over time.

Learning Objectives

• Explain why the total number of atoms of each element is conserved during chemical reactions.
• Use conservation of mass to justify why balanced chemical equations match measured amounts of reactants and products.
• Apply stoichiometric reasoning to interpret relationships between reactants and products.

Learning Objectives

• Explain how DNA sequence information is used to build proteins through transcription and translation.
• Connect amino acid sequences to protein folding and explain how structure creates biochemical function.
• Describe how changes in DNA (genotype) can alter protein conformation and lead to physiological and cellular effects.

Learning Objectives

• Explain how different species interactions (competition, mutualism, predation, parasitism, facilitation) influence community structure and diversity
• Describe how niche partitioning, keystone species, and trophic cascades affect which species coexist and how communities respond to change
• Use interaction networks to predict potential outcomes of species introductions and disturbances

Learning Objectives

• Explain how computational and mathematical models can predict how changes propagate through interacting physical and biological systems.
• Identify common modeling components such as conservation principles, kinetics, coupling, and feedback.
• Use model outputs (predicted effects) to evaluate feasibility and safety in engineering design decisions.

Learning Objectives

• Explain how predictive models simulate Earth system interactions and project future climate outcomes
• Use model validation, sensitivity testing, and ensembles to interpret confidence in projections
• Connect emission pathways and greenhouse gas trajectories to expected temperature, precipitation, and sea-level responses

Learning Objectives

• Explain how solar energy and gravity drive the water cycle processes (evaporation, condensation, precipitation, runoff, infiltration, and groundwater storage).
• Identify how water moves between reservoirs (ocean, atmosphere, land/ice, rivers, and aquifers) and how phase changes affect that movement.
• Describe examples such as evapotranspiration, river discharge, aquifer recharge, and seasonal snowmelt and connect them to storage timescales.

Learning Objectives

• Use particle models to explain how particle motion, spacing, and collisions relate to the physical states of matter.
• Describe how temperature and thermal energy connect to particle kinetic energy and gas pressure in qualitative ways.
• Predict which change of state (melting, freezing, boiling, condensation) matches a given particle-level description.

Learning Objectives

• Explain how homologous structures, vestigial organs, and conserved DNA sequences can support common ancestry.
• Use similarities and differences among traits to interpret branching relationships on a phylogenetic tree.
• Describe how ancestral-form indicators and morphological gradients can help form hypotheses about lineage splitting.

Learning Objectives

• Explain reaction outcomes by connecting atomic rearrangements to observed changes
• Use conservation of atoms as evidence that reactions rearrange atoms rather than create or destroy them
• Describe how electron structures and bonding changes help predict products

Learning Objectives

• Explain how inherited differences and recombination create variation in traits within a population.
• Analyze how trait frequencies change across generations under environmental pressures.
• Use data-based reasoning to predict which traits may become more common over time.

Learning Objectives

• Explain how patterns in the fossil record can support natural selection over time.
• Describe how similarities in structures among related organisms provide evidence for common ancestry and evolution.
• Connect genetic differences to functional traits and survival/reproduction in a changing environment.+ Show more

Learning Objectives

• Differentiate random error from systematic error and explain how each affects repeated measurements.
• Use precision, accuracy, and margin of error to interpret experimental results.
• Decide whether differences between data sets likely reflect a real effect or measurement uncertainty.

Learning Objectives

• Explain how genetic variation and environmental factors can produce phenotypic variation in organisms.
• Use examples (inheritance, nutrition, and temperature-dependent expression) to describe how traits change across development and populations.
• Connect DNA sequence changes and environmental/epigenetic influences to differences in structure and function.

Learning Objectives

• Explain how natural hazards form through Earth processes and how human actions affect risk
• Compare risk-reduction strategies by linking them to hazard type, exposure, and vulnerability
• Evaluate tradeoffs among early warning, land-use planning, engineered barriers, and drought/flood management

Learning Objectives

• Explain how nuclear fusion in the Sun’s core converts mass into energy and powers solar output.
• Describe how changes in fusion rate over time can affect the Sun’s luminosity and inner solar system conditions.
• Connect energy production in stellar interiors to the formation of heavier elements and later generations of stars and planets.

Learning Objectives

• Explain how negative feedback helps maintain stable internal conditions in homeostasis.
• Identify key parts of a negative feedback system (sensors, control center, and effectors).
• Describe how homeostatic control supports blood chemistry, water balance, and oxygen levels.

Learning Objectives

• Explain how particle models connect molecular structure to observable properties like states of matter and solubility.
• Compare polar and nonpolar molecules and predict how each interacts with water.
• Describe how extended structures (polymers and crystalline solids) lead to different properties based on particle arrangement.

Learning Objectives

• Explain how net force (the vector sum of forces) affects the motion of an object.
• Use the relationship net force equals mass times acceleration to predict changes in acceleration.
• Distinguish between mass (inertia) and forces when reasoning about motion.

Learning Objectives

• Describe how rocks can change through melting, cooling, weathering, transport, deposition, and metamorphism.
• Explain how energy transfer and Earth’s spheres (lithosphere, hydrosphere, atmosphere) are involved in the rock cycle.
• Use rock-cycle vocabulary (weathering, sediments, igneous, metamorphic) to interpret statements and scenarios.

Learning Objectives

• Explain how gravitational force provides the centripetal acceleration needed for orbital motion
• Connect orbital period and orbital shape to predictions from an orbital gravity model
• Interpret evidence from planetary and satellite orbits to support a single underlying gravitational explanation

Learning Objectives

• Explain how limiting resources affect population growth and survival
• Describe carrying capacity and how it changes when key resources are depleted
• Compare how different species or life stages may respond differently to the same limiting factor

Learning Objectives

• Explain how natural selection changes heritable traits in a population over generations.
• Distinguish fitness, survival, and reproduction in different environmental conditions.
• Describe how adaptation can lead to divergence among populations.

Learning Objectives

• Explain how genetic variation arises through DNA changes and how allele combinations form during reproduction.
• Describe how mutations can introduce new alleles and how this variation can influence traits.
• Connect trait variation in populations to natural selection under different environmental conditions.

Learning Objectives

• Explain how scientific models represent systems and link observations to explanations
• Identify assumptions and limitations in a model and describe when models should be revised
• Use models to make and evaluate predictions under new conditions

Learning Objectives

• Use Newton’s Second Law to relate net force, acceleration, and mass
• Determine the direction and magnitude of acceleration from multiple forces using vector sums
• Apply Newton’s Second Law to solve motion problems involving changing velocity

Learning Objectives

• Explain how key organelles contribute to essential cell functions
• Connect cell structure (nucleus, ribosomes, mitochondria, chloroplasts) to their roles
• Compare plant and animal cell organelles to understand specialization

Learning Objectives

• Explain how inherited variation and differential reproductive success lead to changes in allele frequencies over generations.
• Describe the relationship between environmental pressures and the survival and reproduction of different phenotypes.
• Distinguish natural selection from changes that occur within an individual during its lifetime.

Learning Objectives

• Distinguish endothermic processes from exothermic processes using energy flow between a system and its surroundings.
• Explain how bond breaking and bond forming relate to whether the temperature of reactants increases or decreases.
• Interpret energy (potential) profiles to determine relative energy of reactants and products and connect the result to energy conservation.

Learning Objectives

• Explain how monomers form polymers through condensation reactions and how hydrolysis breaks polymers apart
• Connect molecular structure of macromolecules (proteins, nucleic acids, lipids, carbohydrates) to their functions in cells
• Describe how enzymes and membranes relate to molecular processes

Learning Objectives

• Explain how natural selection changes allele frequencies across generations.
• Describe how environmental selective pressures lead to population-level adaptation.
• Distinguish adaptation from individual changes during a lifetime.

Learning Objectives

• Explain how incoming solar energy is absorbed and reflected, and how that affects surface temperatures
• Describe how Earth redistributes energy through radiation, conduction, and convection
• Connect seasonal changes and latitude to differences in solar heating+ Show more

Learning Objectives

• Explain how energy moves one direction through trophic levels in an ecosystem.
• Describe how photosynthesis captures energy and how feeding transfers only a portion of it.
• Use ideas like energy loss and energy pyramids to predict patterns in food chains.

Learning Objectives

• Explain how impulse relates to the change in momentum using a force-time viewpoint.
• Use vector ideas to describe impulse and momentum direction during collisions.
• Compare different force-time contact scenarios that produce the same change in momentum.

Learning Objectives

• Explain how observations lead to scientific questions and investigations
• Use evidence and logical reasoning to support or reject an explanation
• Apply measurement and observation vocabulary to describe changes over time+ Show more

Learning Objectives

• Explain how anatomical, fossil, and molecular evidence support common ancestry.
• Describe how similarities and differences among traits can result from evolutionary divergence.
• Interpret molecular similarities as clues to evolutionary relationships.

Learning Objectives

• Explain how limiting resources affect individual organisms and population sizes
• Interpret measurement patterns (such as resource gradients) to predict where species will be most abundant
• Connect carrying capacity to population fluctuations in different environments

Learning Objectives

• Use criteria and constraints to compare proposed solutions
• Identify tradeoffs and failure points when a design is stressed or exposed
• Justify how evaluation results can guide improvements to a next prototype

Learning Objectives

• Explain conservation of energy in a system using energy transfers and conversions.
• Track how kinetic and potential energy change during motion (including gravity).
• Determine how an energy leaving a system affects energy accounting.

Learning Objectives

• Explain how changes to Earth’s surface can influence climate through physical mechanisms.
• Use evidence from long-term records to connect surface changes to temperature and precipitation trends.
• Evaluate the strength of a claim by matching environmental changes to expected processes.

Learning Objectives

• Explain the major mechanisms of plate tectonics and how lithospheric plate motions occur
• Describe what happens at divergent, convergent, and transform plate boundaries
• Use evidence such as earthquakes and volcanic arcs to support the idea of plate interactions+ Show more

Learning Objectives

• Apply conservation of total linear momentum to analyze collisions in an isolated system
• Use pre- and post-interaction momentum balances to compare outcomes without relying on force details
• Interpret center-of-mass motion and connect it to constituent contributions in a vector framework

Learning Objectives

• Define criteria and constraints and explain how they affect design decisions.
• Identify measurable criteria and limitations (constraints) in real-world engineering problems.
• Use criteria and constraints to compare multiple possible solutions and justify a choice.

Learning Objectives

• Explain Newton’s third law using the idea of paired action–reaction forces on two interacting objects
• Identify action–reaction force pairs in real-world scenarios and describe their directions and timing
• Connect an object’s motion response to differences in mass and motion state during an interaction

Learning Objectives

• Explain how physiological adaptations help organisms survive in specific environments.
• Identify examples of internal processes that support water balance, metabolism, and stress tolerance.
• Compare how desert and aquatic organisms may use different internal mechanisms.

Learning Objectives

• Explain how chemical bond formation and bond breaking relate to changes in chemical energy.
• Use bond energies, formation enthalpies, and Hess’s law to determine reaction enthalpy.
• Differentiate exothermic and endothermic processes in terms of energy transfer and microscopic bond changes.