Worksheet Worksheets

Learning Objectives

• Explain the physical meaning of center of mass for multi-particle systems
• Use momentum and net external force to connect total mass, center-of-mass acceleration, and system motion
• Apply center-of-mass ideas to solve simplified collision and recoil problems

Learning Objectives

• Understand the principles of energy transfer and conservation during device operation.
• Identify examples of devices that convert energy from one form to another, such as generators, photovoltaic cells, and heaters.
• Describe the concept of energy accounting across multiple energy transformation steps.+ Show more

Learning Objectives

• Differentiate among structural, behavioral, and physiological adaptations and explain how each can improve survival and reproduction.
• Explain how natural selection changes trait frequencies across generations using the ideas of variation, heritability, and selective pressures.
• Distinguish adaptation from acclimation and identify examples of each.

Learning Objectives

• Explain why listening to elders helps us learn community history and values.
• Use vocabulary related to history and respect when discussing senior citizens’ stories.
• Demonstrate comprehension by identifying true statements and selecting the best answer.+ Show more

Learning Objectives

• Use commas to separate items in a list of three or more
• Place commas after introductory words and introductory phrases
• Identify and correct common comma errors that change meaning or clarity

Learning Objectives

• Explain how plants use carbon-based molecules to build new tissues during growth.
• Identify the role of carbohydrates, proteins, and fats in plant development.
• Describe the process by which atoms from carbon dioxide are incorporated into plant cells.+ Show more

Learning Objectives

• Explain how technology and engineering reshape society’s communication, work, travel, and access to services
• Analyze how design choices create benefits and risks in different contexts
• Use cause-and-effect reasoning to connect engineering decisions to public health, equity, and long-term sustainability+ Show more

Learning Objectives

• Explain how optimizing multiple design goals can create tradeoffs between performance and safety in engineering systems
• Use Pareto trade-off thinking to compare configurations and justify choosing a viable design envelope
• Describe how constraints (like structure and materials) affect outcomes such as aspect ratio and stability buffers

Learning Objectives

• Explain how historical atomic models changed as new experimental evidence became available.
• Use cathode ray observations, Rutherford scattering, and Bohr’s spectral evidence to justify modern ideas about charge and electrons.
• Differentiate isotopes, nuclear charge, and mass number, and connect these ideas to mass spectrometry results.

Learning Objectives

• Explain how electric and magnetic forces depend on properties and separation distance.
• Describe Coulomb-like relationships for electric forces and factors affecting magnetic interactions.
• Identify real-world examples of electric and magnetic forces, including charged objects, magnets, and compass deflections.+ Show more

Learning Objectives

• Understand how energy changes occur during chemical reactions, including exothermic and endothermic processes.
• Identify the relationship between energy transfer and bond breaking and formation.
• Distinguish chemical changes from physical changes based on energy evidence and other signs.

Learning Objectives

• Describe how stratification, light penetration, and oxygen gradients form in ponds and lakes.
• Explain how abiotic gradients influence community composition and vertical zonation.
• Compare how seasonal thermal turnover changes dissolved oxygen, nutrient mixing, and habitat suitability.+ Show more

Learning Objectives

• Explain Bernoulli’s principle for incompressible, streamline flow and relate fluid speed to pressure
• Use the continuity idea to reason about how speed changes in constricted pipes
• Apply Bernoulli’s principle to lift on airfoils and to Venturi-style pressure changes+ Show more

Learning Objectives

• Differentiate membrane-bound and non-membrane-bound organelles and identify examples
• Explain how organelles such as mitochondria, chloroplasts, ER, and Golgi contribute to specialized cell functions
• Connect structure (membranes and compartments) to metabolic role and efficiency in cells+ Show more

Learning Objectives

• Explain how green infrastructure helps manage stormwater using nature-based and engineered systems.
• Describe key functions of green infrastructure, including infiltration, reduced runoff, sediment/nutrient capture, and evapotranspiration.
• Identify design parameters (soil media, slope, vegetation type, storage volume) and predict how they affect downstream impacts.+ Show more

Learning Objectives

• Understand the mechanisms of plate tectonics including subduction, rifting, collision, and uplift.
• Identify evidence supporting plate movements such as seafloor spreading, magnetic striping, and paleomagnetic records.
• Explain how landforms like mountains, ocean basins, and volcanic arcs are created through plate interactions.+ Show more

Learning Objectives

• Explain how net force (the vector sum of forces) determines changes in an object's motion
• Use the relationship net force equals mass times acceleration to predict how acceleration changes
• Distinguish between balanced and unbalanced forces using real-world scenarios+ Show more

Learning Objectives

• Identify how grief can affect feelings, thoughts, and behaviors after a tragedy
• Describe ways communities remember and support people during memorial activities
• Practice respectful communication about loss by using empathetic language+ Show more

Learning Objectives

• Compare elements and compounds using atomic composition, chemical formulas, and bonding
• Explain how chemical combination changes observable properties such as melting point and conductivity
• Identify substances as elements or compounds based on particle type and fixed ratios

Learning Objectives

• Define evolution and explain how allele frequencies can change over generations
• Identify and compare the mechanisms of natural selection and genetic drift
• Describe how mutation and gene flow contribute to genetic variation and evolutionary change

Learning Objectives

• Understand the components and fluxes involved in the global carbon cycle.
• Identify sources and sinks of atmospheric carbon dioxide.
• Explain feedback mechanisms affecting climate change related to carbon fluxes.+ Show more

Learning Objectives

• Explain how cats have been viewed in different cultures and historical times.
• Use holiday and animal-study vocabulary to describe feline care and traditions.
• Connect International Cat Day celebrations to responsible pet ownership and empathy toward animals.

Learning Objectives

• Describe how competition, predation, mutualism, and parasitism influence ecological niches and species survival.
• Explain how niche partitioning reduces competition and helps species coexist in the same habitat.
• Identify the role of keystone species in shaping community composition and stability.+ Show more

Learning Objectives

• Explain linear momentum and identify when momentum is transferred during interactions.
• Use conservation of momentum to predict outcomes for collisions in closed systems.
• Relate impulse to change in momentum using force–time reasoning.+ Show more

Learning Objectives

• Understand different types of species interactions such as competition, mutualism, predation, parasitism, facilitation, and niche partitioning.
• Analyze how species interactions influence community structure, diversity, and stability.
• Evaluate the roles of keystone species and trophic cascades in ecosystems.+ Show more

Learning Objectives

• Differentiate elements, compounds, and mixtures using macroscopic observations and compositional criteria
• Define pure substances as having fixed composition and mixtures as having variable composition
• Interpret and use symbols and formulas to represent elements and compounds (e.g., O, NaCl)+ Show more

Learning Objectives

• Analyze how an author’s purpose influences word choice, detail selection, and organization.
• Evaluate how perspective (including implied audiences or limited viewpoints) shapes credibility and conclusions.
• Use textual evidence to justify claims about what an author wants readers to believe or do.

Learning Objectives

• Understand how energy transfer between trophic levels is inefficient and the implications for ecosystems.
• Explain why large predators require expansive territories due to energy transfer limitations.
• Describe how biomass pyramids vary among grassland, forest, and aquatic ecosystems.+ Show more

Learning Objectives

• Explain how species richness and evenness describe biodiversity in a habitat.
• Interpret common biodiversity index values and compare diversity across habitats.
• Describe how habitat heterogeneity and niche diversity can increase species turnover.+ Show more

Learning Objectives

• Understand how animals require matter and energy to live and grow.
• Identify sources of matter and energy animals use and how they are utilized.
• Explain how animals excrete waste and incorporate matter into their bodies.+ Show more

Learning Objectives

• Understand the criteria used to assess species conservation risk.
• Interpret evidence related to population trends, threats, and recovery potential.
• Identify factors influencing species vulnerability such as land use and genetic diversity.+ Show more

Learning Objectives

• Compare energy and mineral resource options using criteria such as emissions, water use, and land disturbance.
• Explain how extraction impacts can be evaluated using life-cycle thinking and remediation practices.
• Use supply constraints and cost trade-offs to justify sustainable resource management choices.

Learning Objectives

• Understand various mitigation strategies to reduce environmental impacts and greenhouse gases.
• Evaluate the effectiveness, co-benefits, and trade-offs of different mitigation options.
• Analyze technological, economic, and societal constraints influencing mitigation measures.+ Show more

Learning Objectives

• Explain why centripetal acceleration occurs during circular motion even when speed remains constant
• Describe how net force direction determines centripetal acceleration in uniform circular motion
• Use relationships among orbital radius, speed, and mass to predict how changes affect required inward force+ Show more

Learning Objectives

• Explain how igneous, sedimentary, and metamorphic rocks transform through interconnected rock-cycle processes.
• Identify the energy sources and rates that drive rock-cycle transitions, including melting, crystallization, weathering, erosion, deposition, and metamorphism.
• Describe how plate tectonics influences rock-cycle pathways through uplift, burial, and igneous intrusion.+ Show more

Learning Objectives

• Describe how energy flows through an ecosystem from producers to consumers.
• Identify the roles of producers, consumers, and decomposers in matter and energy transfer.
• Explain why energy decreases at higher trophic levels in food chains and webs.+ Show more

Learning Objectives

• Understand circulation patterns driven by density contrasts, wind forcing, and Earth's rotation.
• Identify key ocean phenomena such as thermohaline circulation, gyres, and coastal upwelling.
• Analyze how observations from ARGO floats, satellite altimetry, and salinity-temperature profiles inform ocean studies.+ Show more

Learning Objectives

• Describe the processes of homologous pairing, recombination, independent assortment, and chromosomal segregation during meiosis.
• Explain how crossing-over and nondisjunction contribute to genetic variation and their effects on genotypic and phenotypic outcomes.
• Relate mechanisms of variation to evolutionary processes and inheritance patterns observed in populations.

Learning Objectives

• Explain energy flow through trophic levels and matter cycling within ecosystems.
• Identify key components of ecosystem networks, including producers, consumers, and decomposers.
• Analyze the impact of biogeochemical cycles and human activities on nutrient fluxes.+ Show more

Learning Objectives

• Explain how pressure gradients, vessel diameter, and viscosity affect blood flow rate
• Describe how non-Newtonian behavior of blood can change effective resistance in vessels
• Relate systolic/diastolic pressure differences to arterial function and flow over a heartbeat+ Show more

Learning Objectives

• Explain the difference between fundamental and realized niches using abiotic factors and biotic interactions
• Describe how temporal and spatial partitioning can reduce competition among similar species
• Predict how changes in environmental conditions may shift niche use through measurable parameters and behavioral flexibility

Learning Objectives

• Understand how habitat fragmentation affects ecosystems and species.
• Identify the consequences of habitat fragmentation on biodiversity.
• Analyze strategies like corridors to mitigate habitat fragmentation effects.+ Show more

Learning Objectives

• Define ecosystem components and distinguish biotic from abiotic factors in a habitat.
• Describe trophic categories (producers, consumers, decomposers) and their general roles.
• Explain how energy flows from sunlight to organisms and how matter cycles through ecosystems.+ Show more

Learning Objectives

• Understand different efficiency metrics used to evaluate energy systems.
• Interpret and compare efficiency indicators like percent efficiency, EROI, COP, and LCOE.
• Analyze trade-offs and environmental impacts associated with various energy technologies.+ Show more

Learning Objectives

• Understand the concept of phylogenetic trees and their significance in evolutionary biology.
• Identify methods used to infer evolutionary relationships, such as parsimony and molecular clock models.
• Distinguish between homology and analogy in the context of phylogenetic analysis.+ Show more

Learning Objectives

• Understand the role of primary producers in ecological energy pathways.
• Identify factors that influence primary productivity such as light and soil nutrients.
• Differentiate between types of producers like algae, grasses, shrubs, and boreal trees.+ Show more

Learning Objectives

• Understand the properties of mechanical waves including wavelength, frequency, speed, amplitude, and superposition.
• Analyze wave behaviors such as reflection, transmission, interference, and standing waves on strings and air columns.
• Relate sinusoidal and graphical models to energy transport and modal patterns in wave phenomena.+ Show more

Learning Objectives

• Distinguish homologous structures from analogous traits and explain how each provides evidence for evolution.
• Identify how vestigial organs and embryological patterns support inferences about common ancestry.
• Use anatomical comparisons, embryology, and molecular data to justify evolutionary classification.