Science Worksheets

Learning Objectives

• Explain how evaporation and transpiration release water vapor into the atmosphere.
• Describe how temperature and the availability of liquid water affect the amount of water vapor.
• Connect phase changes to the water cycle, including condensation and precipitation.

Learning Objectives

• Explain how earthquakes and volcanoes are distributed in relation to plate boundaries
• Describe how seismic wave observations help scientists infer Earth’s internal structure
• Interpret patterns in earthquake timing to connect events to ongoing tectonic motion

Learning Objectives

• Explain how polyprotic acids dissociate in steps and how each dissociation constant (Ka1, Ka2, …) affects pH.
• Interpret titration curves for polyprotic acids using buffer regions and equivalence points.
• Calculate stepwise and cumulative acid behavior (conceptually and in simple quantitative problems) for carbonate and phosphate systems.+ Show more

Learning Objectives

• Apply conservation of momentum and conservation of energy to isolated-system scenarios.
• Differentiate elastic, inelastic, and perfectly inelastic collisions using momentum and kinetic-energy outcomes.
• Use algebraic conservation equations to relate initial and final states in collision, explosion, and energy-transfer problems.

Learning Objectives

• Explain how gravitational attraction depends on the masses of two objects.
• Describe how changing the distance between objects affects the strength of gravity.
• Use the idea of gravity as an interaction that acts at a distance to predict changes in motion.

Learning Objectives

• Explain how Aufbau, Pauli exclusion, and Hund’s rules determine electron configuration for main-group elements.
• Predict valence electrons and common ion charges from electron configurations and subshell filling.
• Use configuration logic to justify periodic trends in bonding tendency and chemical reactivity.

Learning Objectives

• Explain the mole concept and use Avogadro’s number to relate moles and particles.
• Calculate molar mass and convert between grams and moles using molar mass.
• Use balanced chemical equations to determine molar ratios and perform mass-to-mass conversions.

Learning Objectives

• Explain how computational models use equations, functions, and simulation to predict system performance.
• Develop and interpret performance objective functions for design decision-making.
• Describe how parameter estimation and sensitivity analysis support model tuning and uncertainty awareness.+ Show more

Learning Objectives

• Explain how carbon, nitrogen, and phosphorus cycle through ecosystems using reservoirs and fluxes.
• Describe microbial decomposition processes and how they affect nutrient availability and primary productivity.
• Use mass-balance reasoning to predict how changes in nutrient inputs and cycling rates can alter long-term ecosystem outcomes.+ Show more

Learning Objectives

• Identify functional requirements and distinguish them from constraints in an engineering problem frame.
• Analyze competing constraints (social, economic, regulatory, environmental, and safety) to prioritize design choices.
• Use qualitative reasoning and basic quantitative bounds to judge feasibility of a conceptual solution.+ Show more

Learning Objectives

• Explain how a geometric model of the Sun, Earth, and Moon can represent lunar phases.
• Use the model to predict which phase is visible and when it occurs over the lunar cycle.
• Describe how the Moon’s apparent illumination changes as it orbits Earth.

Learning Objectives

• Explain directional, stabilizing, and disruptive selection and how each changes a population’s trait distribution.
• Use fitness concepts to predict how selection pressures affect mean phenotype and genetic variation.
• Compare how frequency-dependent and sexual selection change fitness based on interactions with other individuals.

Learning Objectives

• Explain Newton’s second law using net force, mass, and acceleration
• Predict how acceleration changes when net force or mass changes (for the same direction of net force)
• Use the direction of the net force to interpret motion and solve physics situations

Learning Objectives

• Explain how climate differs from short-term weather and identify core components of climate systems
• Describe how energy balance, greenhouse gas concentrations, and incoming solar variations influence climate change
• Evaluate how feedbacks (ice cover, water vapor) and ocean circulation affect temperature and precipitation patterns+ Show more

Learning Objectives

• Use conservation of mass to balance chemical equations by matching atom counts on both sides.
• Distinguish the roles of coefficients and subscripts in chemical formulas.
• Check balanced equations by recounting atoms for each element involved.+ Show more

Learning Objectives

• Interpret energy diagrams and bar charts to describe how energy is distributed and transferred between forms.
• Identify sources and sinks of energy in mechanical and thermal processes, including friction on icy roads.
• Use energy conservation concepts to explain changes in potential energy, kinetic energy, and heat energy.+ Show more

Learning Objectives

• Explain how electronegativity differences create partial charges and bond dipoles.
• Predict whether a molecule is polar or nonpolar by combining bond dipoles using molecular geometry.
• Distinguish polar bonds from polar molecules and relate this to solubility and intermolecular interactions.+ Show more

Learning Objectives

• Explain how albedo changes the amount of solar energy reflected back into space
• Analyze how ice cover changes can create warming or cooling feedback loops
• Evaluate how clouds and atmospheric conditions alter the energy reaching Earth’s surface+ Show more

Learning Objectives

• Explain how negative feedback helps stabilize a physiological variable around a set point.
• Describe how positive feedback can amplify changes and why it must be tightly regulated.
• Compare stabilizing versus amplifying feedback loops using real biological examples.+ Show more

Learning Objectives

• Explain what saturation means in a solvent at a specific temperature and pressure
• Describe how supersaturation can lead to crystallization and precipitation
• Identify real-life examples that show solubility limits and phase change behavior

Learning Objectives

• Explain how effective nuclear charge and electron shielding drive periodic trends across periods and down groups.
• Predict and justify the direction of change for atomic radius, ionization energy, and electronegativity.
• Connect periodic trends to electron gain/loss behavior, bond polarity, and relative reactivity.

Learning Objectives

• Explain how mechanical energy transfers between kinetic and potential energy in moving systems such as pendulums and springs.
• Use qualitative energy bookkeeping to describe conservation of mechanical energy in a closed system and energy loss to nonmechanical forms in an open system.
• Interpret motion outcomes (speed, height, and amplitude) as evidence of energy redistribution and inefficiencies.

Learning Objectives

• Explain how collision theory, activation energy, and temperature influence reaction rates.
• Use experimental rate laws and reaction orders to predict how concentration affects rate.
• Apply the Arrhenius relationship to relate temperature changes to rate constant changes.+ Show more

Learning Objectives

• Interpret descriptive statistics (mean, median, mode, and interquartile range) in context
• Explain how outliers and variability affect comparisons across groups or measurements
• Use basic ideas from inference (confidence and limitations of small samples) to avoid overgeneralizing+ Show more

Learning Objectives

• Explain the difference between criteria and constraints in engineering and science problems
• Identify measurable criteria and realistic constraints in a design scenario
• Use criteria and constraints to justify which solution is most feasible

Learning Objectives

• Explain how heritable variation allows natural selection to change traits in a population over generations
• Identify selective agents (environmental pressures) and describe how they affect survival and reproduction
• Use examples to connect phenotypic differences to population-level shifts in trait frequencies over time

Learning Objectives

• Explain how propellers and jet engines produce thrust to overcome drag
• Compare propulsive efficiency at different speeds for propeller-driven vs jet-driven systems
• Describe how thrust-to-weight ratio affects acceleration and climb+ Show more

Learning Objectives

• Identify the basic resources living things need to survive and function.
• Explain how limiting needs can cause visible changes in organisms.
• Match common survival needs (water, air/gases, food, temperature, shelter) to examples of organisms.

Learning Objectives

• Explain how atoms are conserved as matter cycles through organisms during digestion, biosynthesis, and respiration
• Trace the flow of carbon and nitrogen from ingested food to cellular biomolecules and eventual waste products
• Use biochemical pathway ideas (building and breaking down macromolecules) to describe matter recycling

Learning Objectives

• Use balanced chemical equations to describe how quantities of reactants relate to quantities of products.
• Calculate and interpret mole ratios to predict relative amounts and mass relationships in chemical transformations.
• Apply conservation of matter to check whether calculated product amounts and reagent needs are reasonable.+ Show more

Learning Objectives

• Describe the major freshwater and saline water reservoirs on Earth and compare their relative proportions.
• Explain how climate, topography, and geology influence where freshwater is stored and where it can be extracted.
• Analyze why access to potable water is uneven across regions and connect this to water security and transboundary concerns.

Learning Objectives

• Classify common chemical reaction types (synthesis, decomposition, single and double displacement, combustion) based on how species transform.
• Predict product categories and representative products from reaction patterns and typical environmental conditions.
• Identify evidence of reaction type using observable indicators such as gas production, heat/light, color change, or temperature change.

Learning Objectives

• Explain the main stages of the water cycle and describe how water changes state during the cycle.
• Trace water pathways from the atmosphere to land and oceans using evaporation, condensation, precipitation, runoff, and infiltration.
• Use evidence from the water cycle to predict how changes can lead to wet/dry seasons or drought/flood conditions.

Learning Objectives

• Explain the steps of the scientific method and why they repeat when new evidence appears.
• Write a testable hypothesis, including a clear prediction based on measurable observations.
• Use operational definitions and controlled comparisons to make causal claims supported by evidence.

Learning Objectives

• Explain how energy transforms during photosynthesis and cellular respiration
• Describe how chloroplasts and mitochondria help convert energy into usable ATP
• Compare how active and resting tissues use energy differently

Learning Objectives

• Identify common failure points in designs and explain how specific design features can lead to those failures.
• Describe how engineers balance trade-offs when improving a design (for example, strength vs. weight or safety vs. cost).
• Use evidence from testing or observations to revise a design while staying within constraints.

Learning Objectives

• Explain how energy transfer into and out of a system changes particle motion and temperature.
• Differentiate endothermic and exothermic processes using energy flow and temperature change evidence.
• Use conservation of energy to interpret temperature changes as measured signs of energy transfer.

Learning Objectives

• Explain how circulatory, respiratory, digestive, and nervous systems work together to support homeostasis.
• Describe how oxygen and nutrients move from their sources to body cells using interdependent system processes.
• Use evidence from human mammalian systems and plant vascular transport to compare how organisms distribute needed materials.

Learning Objectives

• Define symbiosis and explain how close relationships between species can affect survival and reproduction.
• Categorize symbiotic interactions as mutualism, commensalism, or parasitism using concrete examples.
• Explain how symbiotic relationships influence organism fitness, resource distribution, and community composition.+ Show more

Learning Objectives

• Differentiate ionic, covalent, and metallic bonding by electron transfer, electron sharing, and electron delocalization.
• Predict common physical properties (melting point, solubility, and electrical conductivity) from the type of chemical bond.
• Relate bonding behavior to periodic trends such as electronegativity and typical element families.

Learning Objectives

• Explain density as mass per unit volume and use SI units (kg/m³ and g/mL) to compare materials.
• Use density to predict whether objects float or sink in water and connect this to buoyancy.
• Describe relative density and specific gravity and relate them to the density of a reference material.

Learning Objectives

• Explain how primary control surfaces (ailerons, elevators, rudder) control roll, pitch, and yaw.
• Describe how secondary surfaces (flaps and trim) change lift, drag, and handling through deflection and trim settings.
• Understand control authority and why hinge moments and surface sizing affect responsiveness and energy cost.

Learning Objectives

• Explain how carrying capacity and resource limitation regulate population size over time
• Distinguish between density-dependent and density-independent factors and give examples
• Use logistic growth ideas to interpret how populations stabilize rather than grow forever+ Show more

Learning Objectives

• Explain how conservation of momentum applies to isolated two-object systems during collisions.
• Use Newton’s third law (action-reaction) to describe equal and opposite forces during contact.
• Distinguish elastic and inelastic collisions using changes in motion and momentum.+ Show more

Learning Objectives

• Explain how to follow safety procedures when using common lab materials and heat sources.
• Identify ethical expectations for reporting results accurately, honestly, and with proper attribution.
• Present data clearly by describing results, limitations, and any safety-relevant observations.

Learning Objectives

• Explain how natural hazards (weather, geological, and other Earth processes) can pose risks to people and ecosystems
• Use NGSS-aligned reasoning to connect hazard characteristics and exposure to potential impacts
• Describe science-based strategies for preparing for, responding to, and mitigating natural hazards

Learning Objectives

• Analyze how fossil occurrences and stratigraphic sequences reveal patterns of origin, diversification, and extinction over geologic time.
• Explain how relative dating and radiometric dating help place fossils in a temporal sequence.
• Interpret how fossil morphology and geographic distribution support ideas about lineage continuity and turnover.

Learning Objectives

• Explain how scientific predictive models relate variables to expected outcomes.
• Identify the assumptions and variables in a model and describe what they let scientists predict.
• Use a model to make testable predictions and connect those predictions to data patterns.