Science Worksheets

Learning Objectives

• Describe the process of photosynthesis, including light-dependent and light-independent reactions.
• Identify key biochemical pathways involved in energy capture and conversion.
• Explain the role of electron transport chains and ATP synthesis in cellular respiration.+ Show more

Learning Objectives

• Explain how energy moves through trophic levels in an ecosystem, from producers to consumers.
• Differentiate energy flow (directional) from matter cycling (recycling).
• Describe how decomposers contribute to nutrient availability while energy decreases at each transfer.+ Show more

Learning Objectives

• Understand the different definitions of acids and bases: Arrhenius, Brønsted–Lowry, and Lewis.
• Classify substances as acids or bases using different models.
• Identify strong and weak acids and bases.+ Show more

Learning Objectives

• Define chemical properties and explain how they are different from physical properties.
• Identify observable indicators of chemical reactions such as gas evolution, color change, and precipitate formation.
• Understand the reactivity of noble metals versus reactive non-metals.+ Show more

Learning Objectives

• Understand Earth's rotation and how it causes day and night.
• Identify how Earth's tilt and orbit influence seasons.
• Describe the phases of the Moon and their monthly cycle.

Learning Objectives

• Understand the difference between physical and chemical changes.
• Identify examples of physical changes in matter.
• Recognize evidence that indicates a chemical change.+ Show more

Learning Objectives

• Explain how phylogenetic trees represent hypothesized evolutionary relationships using common ancestors and branching patterns.
• Differentiate monophyletic, paraphyletic, and polyphyletic groups based on what descendants are included.
• Interpret rooted versus unrooted trees and relate tree structure to direction of descent and relationships.+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Explain how constraints in engineering and design can affect people and the natural environment
• Identify examples of environmental impacts caused by material choices and construction decisions
• Distinguish technically feasible solutions from socially and environmentally responsible solutions

Learning Objectives

• Explain how Earth’s geosphere, hydrosphere, atmosphere, and biosphere interact through energy flow.
• Describe how matter cycles among Earth systems using examples such as the water cycle and biogeochemical cycling.
• Use cause-and-effect reasoning to connect surface physical changes to regional or global patterns.

Learning Objectives

• Characterize chemical reactions using qualitative indicators of change and apply conservation of mass to reaction equations.
• Balance chemical equations and use stoichiometry to determine limiting reagents and theoretical/percent yields.
• Explain reaction energetics, activation energy, and equilibrium using enthalpy and rate concepts connected to molecular collisions.

Learning Objectives

• Understand the concept of conservation of energy in chemical reactions
• Identify exothermic and endothermic reactions through energy diagrams
• Recognize physical changes that involve energy transfer without changing total energy

Learning Objectives

• Explain how matter and energy behavior differ between open and closed systems
• Use system boundaries to predict whether a reaction will show mass conservation
• Interpret evidence from experiments by accounting for matter transfer into or out of a system

Learning Objectives

• Explain how multiple lines of evidence (fossils, anatomy, and genetics) support the theory of evolution.
• Use homologous structures and genetic similarity to infer shared ancestry.
• Distinguish evidence for gradual change from patterns caused by convergent evolution.

Learning Objectives

• Understand the difference between strong and weak acids and bases
• Identify examples of strong and weak acids and bases
• Explain how ionization affects pH levels in solutions+ Show more

Learning Objectives

• Identify the main characteristics and functions of epithelial tissue
• Describe the cellular composition of epithelial tissue
• Understand how epithelial tissue contributes to organ-level functions

Learning Objectives

• Explain how competition, predation, parasitism, and mutualism shape community composition.
• Describe how species interactions influence survival, reproduction, and population size.
• Interpret how biotic interactions can create cascading effects across food webs.+ Show more

Learning Objectives

• Explain how collision frequency, molecular orientation, and activation energy affect reaction rates
• Use rate laws to describe how reactant concentrations influence reaction rate
• Apply the Arrhenius equation idea to interpret how temperature changes rate constants+ Show more

Learning Objectives

• Understand the concept of food chains and trophic levels
• Explain how energy transfers from producers to consumers in an ecosystem
• Identify the reasons why food chains have limited numbers of trophic levels+ Show more

Learning Objectives

• Define the law of conservation of mass
• Explain how mass is conserved during chemical reactions
• Identify balanced chemical equations that demonstrate mass conservation+ Show more

Learning Objectives

• Explain how density relates mass to volume and why it is useful as evidence to classify materials
• Use float/sink behavior in water to infer relative density without changing a substance’s identity
• Estimate or measure density and use it to predict how substances will layer in mixtures+ Show more

Learning Objectives

• Match material properties to the demands of a design solution, such as strength, water resistance, and conductivity.
• Compare multiple material options by considering performance and practical limits like cost, availability, and shaping.
• Explain how filtration design choices (membrane thickness, pore size, and durability) affect contaminant removal over time.

Learning Objectives

• Explain how key membrane-bound organelles maintain cell function through specialized roles.
• Describe how the nucleus regulates gene expression and how mitochondria produce usable energy.
• Compare the functions of chloroplasts, endoplasmic reticulum, Golgi apparatus, and ribosomes in different cell processes.

Learning Objectives

• Understand how atmospheric processes influence weather patterns.
• Explain the relationship between pressure differences and wind formation.
• Describe how fronts, convection, and jet streams organize storms.+ Show more

Learning Objectives

• Understand key ethical principles such as beneficence, risk minimization, and informed consent in scientific contexts.
• Analyze scenarios involving data privacy, environmental stewardship, and biotechnology from an ethical perspective.
• Apply criteria for ethical judgment to real-world scientific applications and societal issues.+ Show more

Learning Objectives

• Explain how different species interactions (predation, competition, mutualism, and parasitism) affect survival and reproduction
• Connect species interactions to changes in population sizes and community structure
• Use evidence-based reasoning to predict how organisms may respond when conditions change

Learning Objectives

• Compare surface processes (impacts, volcanism, tectonics, and erosion) across terrestrial and icy planetary bodies.
• Explain how crater records and volcanic/tectonic landforms are used to reconstruct planetary thermal evolution and geologic history.
• Use remote sensing and in situ evidence to infer the roles of impact flux, endogenic activity, and volatile-driven alteration.

Learning Objectives

• Understand how to analyze trade-offs in engineering design choices.
• Apply cost-benefit matrices and Pareto fronts to evaluate competing objectives.
• Interpret sensitivity analysis results to identify optimal solutions under constraints.+ Show more

Learning Objectives

• Describe the inputs and outputs of photosynthesis.
• Explain how light-dependent reactions and the Calvin cycle are connected.
• Use key vocabulary (photon, ATP, NADPH, Calvin cycle, CO2 fixation, glucose, cellular respiration) in context.

Learning Objectives

• Compare design alternatives using clear criteria and evidence from testing or observations.
• Justify a final design choice by linking each criterion to outcomes and constraints.
• Explain how tradeoffs are managed and how design parameters can be refined when results are not sufficient.

Learning Objectives

• Distinguish between physical changes and chemical changes by identifying evidence of new substances.
• Classify common matter changes using observable clues such as gas formation, color change, and permanence.
• Use accurate science vocabulary (substance, state, reaction, evidence) to explain why a change is physical or chemical.

Learning Objectives

• Explain how variable control, replication, and randomization strengthen causal claims in experiments.
• Write operational definitions for independent and dependent variables using measurable procedures.
• Evaluate trade-offs among internal validity, external validity, and resource constraints.+ Show more

Learning Objectives

• Interpret climate data trends by comparing averages and extremes over time
• Explain how El Niño and La Niña can shift precipitation patterns and storm activity
• Use multiple climate indicators to support evidence-based conclusions

Learning Objectives

• Describe the molecular basis of heredity, including nucleic acid structure and base-pairing rules.
• Explain mechanisms of DNA replication, transcription, and translation.
• Identify different types of mutations and their effects on gene expression.+ Show more

Learning Objectives

• Understand how trees and other species contribute to ecosystem functions
• Identify keystone and indicator species in ecosystems
• Recognize the importance of species diversity for ecosystem resilience+ Show more

Learning Objectives

• Explain conservation of mass using the idea that atoms are rearranged but not created or destroyed in a closed system
• Use mass balance to check whether measured reactant and product masses (including captured or released gases) are consistent
• Interpret reaction equations by relating total mass before and after to stoichiometric reasoning

Learning Objectives

• Explain the difference between a hypothesis and an evidence-based prediction in scientific investigations.
• Identify which claims are testable and how results can support or challenge an idea.
• Describe how uncertainty and unexpected outcomes can refine assumptions and guide further evidence collection.

Learning Objectives

• Define work in the context of physics.
• Calculate the work done when a force acts through a distance.
• Differentiate between work and power.+ Show more

Learning Objectives

• Explain how engineering trade-offs involve balancing cost, performance, and risk using data and reasoning
• Evaluate design alternatives by considering long-term operating and maintenance effects, not just initial purchase price
• Use models or assumptions to compare options and justify a recommended choice

Learning Objectives

• Understand the principle of atom conservation during chemical reactions.
• Learn to interpret balanced chemical equations as models of conservation.
• Identify how mass changes are explained within reaction systems.+ Show more

Learning Objectives

• Explain how dichotomous and multi-access identification keys use observable traits to sort organisms
• Construct binary branches in a key using contrasting, measurable characteristics
• Evaluate and improve the accuracy of a key by testing it with local specimens

Learning Objectives

• Identify different types of digital data sources used in science.
• Understand how digital data supports scientific research and inquiry.
• Learn how to verify the quality and coverage of digital datasets.+ Show more

Learning Objectives

• Explain how latitude affects the angle of incoming sunlight and changes temperature patterns.
• Describe how elevation and distance from water influence temperature and precipitation.
• Use ocean currents and climate examples to connect multiple climate drivers to regional weather differences.

Learning Objectives

• Explain how disturbances can change ecosystem interactions and environmental conditions.
• Describe how feedback processes and recovery rates influence whether an ecosystem returns to its original state.
• Use evidence from population trends and community structure to argue for gradual versus rapid ecosystem shifts.+ Show more

Learning Objectives

• Explain Newton’s first law in terms of net external force and inertia
• Analyze real-world scenarios to determine whether forces are balanced or unbalanced
• Connect constant velocity to a net force of zero+ Show more

Learning Objectives

• Describe the structure of the atmosphere and how air masses interact to produce fronts and changing weather.
• Explain how pressure systems and prevailing winds influence regional weather patterns.
• Use climate classification and the greenhouse effect to connect long-term climate trends to observable local weather.

Learning Objectives

• Understand the concept of cellular specialization and how different cells have unique functions.
• Describe the ways cells communicate within tissues and organs.
• Explain how intercellular communication influences tissue and organ function.+ Show more

Learning Objectives

• Describe the major structural parts of DNA, including nucleotide monomers, the sugar-phosphate backbone, and antiparallel strands.
• Explain complementary base pairing (A–T and G–C) and how base sequence information is stored in DNA.
• Connect DNA structure to how replication and mutations (substitutions, insertions, deletions) can change genetic information.