Science Worksheets

Learning Objectives

• Explain particle accounting using atomic-level models to show what is conserved in chemical reactions.
• Use diagrams or particle representations to identify which bonds break and which bonds form during a reaction.
• Connect conservation of atoms to reaction completion and product identity.

Learning Objectives

• Explain how ecosystems respond to disturbances and why some communities return to functional conditions.
• Describe how changes in population size can affect resource availability and later ecosystem development.
• Use evidence-based reasoning to distinguish stability from the idea that nothing changes.

Learning Objectives

• Explain how multiple organ systems work together to maintain conditions cells need to function.
• Describe how nervous and endocrine signaling coordinate body responses.
• Use examples to connect circulatory, respiratory, and digestive systems to transport and processing of materials.

Learning Objectives

• Explain how energy can change forms (mechanical, electrical, chemical, and thermal) and trace conversions in real devices.
• Use efficiency ideas to analyze energy losses during conversions and testing.
• Design and evaluate an energy-conversion device using constraints such as safety, materials, and cost.

Learning Objectives

• Explain how heritable trait differences and environmental pressures can change trait frequencies over time
• Describe the role of differential reproductive success in natural selection
• Use examples (e.g., pollution, island finches, antibiotic resistance) to connect trait advantages to population change

Learning Objectives

• Distinguish physical (often reversible) changes from chemical (usually not easily reversible) changes by observing evidence.
• Explain how state changes like melting, freezing, boiling, and condensation can be reversed under different conditions.
• Use particle and substance ideas (atoms rearrange vs. form/state changes) to justify whether a change is reversible.

Learning Objectives

• Explain how homologous structures and embryological similarities support common ancestry
• Describe how fossil record patterns provide evidence for evolutionary change over time
• Compare molecular evidence (DNA and protein similarities) with respect to relatedness+ Show more

Learning Objectives

• Explain how DNA sequence information is converted into functional proteins through replication, transcription, and translation
• Describe how codons specify amino acids using the genetic code
• Connect chromosomal organization and gene regulation to observable phenotypes and allelic variation

Learning Objectives

• Describe physical changes as changes in state or form that keep the same chemical identity.
• Differentiate reversible and irreversible physical transformations using everyday examples.
• Explain how energy transfer is involved in melting, freezing, evaporation, and condensation.+ Show more

Learning Objectives

• Explain how fossil occurrences in different rock layers (strata) show patterns of change over geologic time.
• Use relative dating ideas to describe how fossils can be ordered, and compare this with radiometric dating.
• Describe how fossil assemblages can change when environments shift, leading to persistence or disappearance of taxa.

Learning Objectives

• Explain how multiple lines of evidence support the idea that Earth’s tectonic plates have moved over geologic time.
• Identify how patterns of rock ages and types, along with seafloor features, help reconstruct past plate positions.
• Describe how fossils and minerals can match across distant regions because of former adjacency.

Learning Objectives

• Explain how dominant and recessive alleles affect genotype-to-phenotype outcomes in monohybrid crosses.
• Use probability ideas and Punnett squares to predict genotype and phenotype ratios.
• Interpret simple pedigrees and recognize limits of Mendelian patterns when inheritance is not fully simple.

Learning Objectives

• Identify evidence of chemical reactions using qualitative indicators such as color change, gas formation, and precipitate formation
• Use quantitative data (mass, temperature, and composition) to decide whether new substances formed
• Explain how pre-interaction and post-interaction measurements support the claim that a chemical reaction occurred

Learning Objectives

• Interpret observational and instrumental data to identify patterns in natural hazards.
• Estimate recurrence intervals from hazard histories to support risk assessment.
• Use data records (e.g., seismic, tsunami, storms, floods) to infer likely locations and magnitudes of future events.+ Show more

Learning Objectives

• Explain how gravity provides the centripetal acceleration that keeps objects in orbit
• Compare how distance from a massive object affects orbital speed and orbital period
• Describe how orbital motion relates to satellites and to larger systems in space

Learning Objectives

• Explain how DNA sequence is converted into information used to build proteins
• Describe base pairing and how RNA codons determine the order of amino acids
• Connect changes in DNA sequence to changes in protein structure and function

Learning Objectives

• Explain how net force acting over a collision time interval changes an object's momentum
• Connect impulse to the change in velocity before and after contact
• Use Newton's third law to reason about forces between two interacting objects during a collision

Learning Objectives

• Explain how electric current relates to the rate of charge flow and how resistance opposes that flow
• Use the relationship between voltage, current, and resistance to predict circuit behavior
• Describe how material properties, temperature, and geometry affect resistance+ Show more

Learning Objectives

• Explain how the direction of net force determines the direction of acceleration.
• Use vector addition ideas to predict how multiple forces change an object’s motion.
• Interpret everyday motion (turning, speeding up, slowing down) using force diagrams and net force.

Learning Objectives

• Explain how birth, death, immigration, and emigration affect population size over time.
• Compare exponential and logistic growth and interpret the role of carrying capacity and density dependence.
• Describe how predator-prey interactions, Allee effects, and disturbances can create population fluctuations.+ Show more

Learning Objectives

• Explain how tissues and organs work together in the circulatory, respiratory, digestive, and nervous systems.
• Describe how organ systems interact to support movement of gases and nutrients in the body.
• Connect cellular processes (like diffusion and energy use) to system-level outcomes.

Learning Objectives

• Explain how energy transfers and losses occur in real systems using the idea of useful energy vs. wasted energy.
• Calculate and interpret efficiency as the fraction of total energy transfer that produces intended outcomes.
• Identify common loss mechanisms (friction, sound, heat) and describe how reducing them can increase output.

Learning Objectives

• Explain how energy moves through producers, consumers, and decomposers in food webs using trophic levels.
• Distinguish between gross production and net production and interpret how energy loss affects ecosystem productivity.
• Use biomass pyramids and trophic transfer efficiency to predict patterns in species abundance and ecosystem structure.

Learning Objectives

• Explain how energy (heat) drives processes in Earth’s rock cycle, including melting and metamorphism
• Describe how geologic processes like erosion and deposition change rock material while conserving atoms
• Use evidence (outcrops, fossils, and geochemical signatures) to connect rock cycle processes across time

Learning Objectives

• Explain what carrying capacity means and why populations often level off over time.
• Identify how resource availability, competition, and biotic pressures (predators and disease) affect carrying capacity.
• Describe how energy flow and nutrient availability can influence which populations persist at larger ecosystem scales.

Learning Objectives

• Describe how species richness and occurrence patterns can reveal biodiversity trends across space and time
• Explain how comparisons such as island faunas and latitudinal gradients help identify endemism and turnover
• Use ecological and historical factors (like habitat fragmentation and colonization) to interpret why communities differ

Learning Objectives

• Identify and describe mutualism, competition, predation, and parasitism as recurring species interaction types.
• Use observations and species traits to predict how interaction strength changes across forest, grassland, and freshwater ecosystems.
• Explain how niche partitioning, resource overlap, and behavioral strategies affect the outcomes of species interactions.

Learning Objectives

• Explain how conserved genes and regulatory systems can indicate shared ancestry.
• Describe how DNA sequence similarity and shared protein functions support evolutionary relationships.
• Connect conserved metabolic pathways to the idea that evolution modifies existing genetic material.

Learning Objectives

• Explain how valence electrons and electron configurations help predict an element’s typical bonding and ion formation.
• Describe recurring patterns on the periodic table and connect them to changes in reactivity across groups and periods.
• Use metallic vs. nonmetallic tendencies to make evidence-based predictions from electron behavior.

Learning Objectives

• Evaluate evidence for the wave and particle models of electromagnetic radiation using interference, diffraction, and the photoelectric effect.
• Explain where each model works well and where it breaks down for different observed phenomena.
• Connect spectral observations (wavelength, frequency, energy) to the underlying behavior of light.

Learning Objectives

• Explain why temperature can remain nearly constant during phase changes even while energy is added
• Interpret heating curves by separating temperature-change intervals from phase-change (energy reorganization) intervals
• Describe how latent heat relates to particle rearrangement during melting and boiling

Learning Objectives

• Distinguish between design criteria (measurable goals) and constraints (limits on possible solutions)
• Translate a goal into observable or measurable requirements for testing
• Use constraints to narrow design choices and avoid optimizing irrelevant features

Learning Objectives

• Explain how balanced forces result in zero net force and predict motion behavior.
• Differentiate between individual forces acting on an object and the combined effect on acceleration.
• Use scenarios to determine whether an object will maintain constant velocity or remain at rest.

Learning Objectives

• Explain how the relative positions of Earth, the Moon, and the Sun produce lunar phases and eclipses.
• Use line-of-sight and shadow geometry to distinguish phase changes from shadowing events.
• Describe the sequence and timing of primary lunar phases and predict when eclipses can occur.

Learning Objectives

• Explain how the light-driven reactions generate ATP and reduced electron carriers used in carbon fixation.
• Describe the electron transport chain and photophosphorylation in chloroplast thylakoid membranes.
• Model carbon fixation in the Calvin cycle using CO2, ATP, and NADPH stoichiometry.+ Show more

Learning Objectives

• Explain how competition for limited resources affects survival and reproduction in interacting populations.
• Describe feedback effects that occur when resource scarcity changes per-capita success over time.
• Use ecological models to predict how changes in one population can influence others through shared limitations.

Learning Objectives

• Explain how discrete time stepping and parameter sweeps are used to simulate dynamic systems.
• Describe how sensitivity analysis helps interpret how model outputs depend on uncertain parameters.
• Identify common assumptions and limitations in numerical simulations, including stability and approximation error.+ Show more

Learning Objectives

• Explain how gravitational attraction governs planetary and satellite motion.
• Describe how mutual gravity can produce elliptical orbits and changing orbital speed.
• Connect orbital period and orbital path characteristics to relative mass and distance.

Learning Objectives

• Explain how tectonic processes, atmospheric dynamics, and the hydrologic cycle contribute to the origin and severity of natural hazards.
• Describe patterns of natural hazards using evidence such as historical records, seismic data, satellite observations, and hazard maps.
• Use cause-and-effect reasoning to predict how hazards can impact communities and infrastructure.

Learning Objectives

• Explain how multiple independent evidence types support common ancestry and evolutionary change
• Describe how fossils, molecular data, and biogeographic patterns provide converging evidence
• Evaluate claims about evolution by checking whether they are supported by more than one line of evidence

Learning Objectives

• Explain how finite and renewable resources influence ecosystem health and human growth.
• Analyze tradeoffs involved in using limited resources for infrastructure, food, and energy.
• Evaluate how population decisions and land-use choices can increase or reduce risk.

Learning Objectives

• Explain how Earth’s rotation and orbit make the Sun, Moon, and stars appear to move across the sky.
• Define diurnal rising and setting and describe what observers see from Earth.
• Describe the roles of the horizon and the celestial sphere in understanding apparent stellar paths.+ Show more

Learning Objectives

• Model energy conservation by tracking how energy changes between system components using an energy budget.
• Connect observed changes in component energy to specified energy transfers (work, heat, and energy flow between system and surroundings).
• Use consistency between representations to explain why total energy remains constant during redistribution.

Learning Objectives

• Explain how stratigraphy, sedimentation, metamorphism, and erosion provide evidence of Earth’s changing surface over time.
• Use unconformities, fossil correlation, and sedimentary facies to interpret temporal sequences in rock records.
• Connect incremental geologic processes and episodic events to how continental and oceanic crust are reshaped over geologic time.+ Show more

Learning Objectives

• Explain how predator and prey populations affect one another over time.
• Describe how predator-prey interactions can influence ecosystem carrying capacity and stability.
• Use cause-and-effect reasoning to predict changes in population sizes.

Learning Objectives

• Explain how elements move through biological, geological, and atmospheric reservoirs during biogeochemical cycles.
• Describe key chemical transformations in the carbon, nitrogen, and phosphorus cycles and how they affect residence times.
• Analyze how human activities (fossil fuel combustion and fertilizer use) change pools and fluxes in Earth systems.

Learning Objectives

• Explain how organisms compete for limited resources and how that affects survival and reproduction
• Describe how competition can be direct or indirect when organisms share requirements
• Use evidence to predict which species is more likely to persist under different resource conditions

Learning Objectives

• Explain how insulators reduce electrical charge flow by limiting free charge carriers.
• Compare insulating materials (rubber, glass, dry wood) based on their electrical properties and safety uses.
• Describe how surface charge behavior can differ from bulk insulating properties.