Science Worksheets

Learning Objectives

• Explain how catchment-level actions can affect freshwater flow regimes and pollutant loads.
• Describe key conservation strategies for freshwater stewardship (demand management, source protection, riparian buffers, agricultural best management measures, and wetland preservation).
• Analyze trade-offs among water supply, ecological integrity, and economic uses.

Learning Objectives

• Explain how density links mass and volume and distinguish it from length or size.
• Calculate or reason about density using the relationship between mass and volume.
• Use density to predict whether objects will sink or float in different fluids.

Learning Objectives

• Explain the difference between fundamental and realized niches using measurable environmental factors.
• Describe how abiotic factors and interspecific interactions influence resource use and habitat occupation.
• Use examples to explain niche partitioning in space and time among similar species.+ Show more

Learning Objectives

• Explain how forces can change motion and pressure in matter.
• Describe how contact forces and friction can lead to physical changes such as heating, melting, or softening.
• Distinguish physical change from changes that form new substances.

Learning Objectives

• Explain how dissolving forms a solution by describing the roles of solute and solvent.
• Identify evidence that dissolving is typically a physical change, not a new substance.
• Use particle ideas and observable properties (clarity, temperature) to describe solutions.

Learning Objectives

• Explain how filtration separates mixtures using particle size and pore size in porous media
• Describe how flow behavior affects filtration efficiency for suspensions and precipitates
• Evaluate limitations of filtration for dissolved solutes and colloids+ Show more

Learning Objectives

• Explain how light travels and how shadows form when objects block light.
• Describe how sound is produced and how it travels through a medium like air.
• Connect changes in distance and barriers to patterns for light and sound, including shadows, delays, and muffling.

Learning Objectives

• Organize science data in tables and graphs to make patterns easier to see.
• Use evidence from a data representation to support a claim or explanation.
• Explain how changes across trials or conditions can reveal a repeating pattern.

Learning Objectives

• Compare how annuals, biennials, perennials, and woody plants time germination, flowering, seed set, and dormancy.
• Describe seed banking and the seasonal cues that trigger life cycle transitions and dormancy.
• Explain how environmental variability and human land use (cropping cycles and habitat alteration) can favor certain life histories and affect population persistence.

Learning Objectives

• Explain how flowing water, wind, and ice can break down and move Earth materials
• Identify how erosion changes landforms over time by transporting material to new locations
• Recognize evidence of erosion such as worn edges and exposed layers

Learning Objectives

• Distinguish correlation from causation when evaluating scientific claims
• Use causal reasoning to check variable direction and consider alternative explanations
• Assess how well evidence supports a causal conclusion and what additional evidence would be needed

Learning Objectives

• Explain what mutations are and describe common sources of mutations
• Describe how mutations can affect protein structure, gene expression, and cellular pathways
• Analyze how environmental conditions can change whether a mutation increases fitness+ Show more

Learning Objectives

• Explain how photosynthesis transforms light energy into chemical energy stored in sugars
• Describe how cellular respiration releases usable energy by breaking down sugar molecules
• Compare how both processes rearrange atoms and manage energy flow in cells and ecosystems+ Show more

Learning Objectives

• Explain how effective nuclear charge and electron shielding influence atomic size and ionization energy across periods and down groups.
• Predict trends in ion formation using valence electrons and typical common ion charges.
• Use periodic organization (periods and groups) to justify bonding tendencies and patterns in chemical behavior.

Learning Objectives

• Explain how limiting factors affect population growth and carrying capacity
• Differentiate biotic and abiotic limiting factors in an ecosystem
• Analyze how limiting factors influence species interactions and biodiversity+ Show more

Learning Objectives

• Explain how camouflage helps organisms avoid predators by blending into their environment.
• Describe how warning coloration, mimicry, and physical defenses reduce the risk of harm.
• Use cause-and-effect reasoning to connect defensive adaptations to survival and reproduction.

Learning Objectives

• Explain how observable characteristics are used to group organisms in science.
• Use a dichotomous key to identify organisms using step-by-step choices.
• Describe how hierarchical classification categories lead from kingdom to species.+ Show more

Learning Objectives

• Explain how reproductive isolation can lead to speciation over time.
• Describe how divergent selection and genetic drift can change populations independently.
• Connect mechanisms of evolution (barriers to gene flow and independent evolution) to biodiversity and ecosystem variety.

Learning Objectives

• Differentiate climate from short-term weather and explain why climate varies by region
• Describe how latitude, distance from water, elevation, and atmospheric circulation influence temperature and precipitation ranges
• Analyze how climate shapes ecosystems and surface processes over time+ Show more

Learning Objectives

• Explain conservation of mass in a closed system using particle/atom reasoning
• Connect conservation of mass to balanced chemical equations and measurable quantities
• Interpret how experimental setup (closed vs. open) affects mass measurements

Learning Objectives

• Identify the roles of system components such as a source, mechanism, and control in a simple technological system
• Explain how energy moves through a system and how component properties affect function
• Use system-thinking vocabulary (input, output, control, connector) to describe how a system achieves a goal

Learning Objectives

• Explain how genes carried in reproductive cells lead to inherited traits in offspring
• Identify examples of traits that are influenced by heritable genetic information
• Distinguish between dominant and recessive allele effects on observed traits

Learning Objectives

• Identify mechanisms of energy transfer between objects and across different media (solids, liquids, gases).
• Connect energy transfer to observable changes in motion and to changes in thermal state.
• Use evidence from temperature or motion observations to explain what energy was transferred and how.

Learning Objectives

• Explain how cells, tissues, and organs are related to organ system function
• Describe how cell specialization supports tissue structure and organ performance
• Use examples from the lungs, intestines, heart, and nerves to connect microscopic features to macroscopic functions

Learning Objectives

• Explain how solubility changes when temperature and agitation change
• Distinguish unsaturated, saturated, and supersaturated solutions using observable indicators
• Compare the solubility of different solutes in water versus oil and justify conclusions+ Show more

Learning Objectives

• Explain how net force affects changes in speed and/or direction
• Distinguish between balanced forces and unbalanced forces using real-world examples
• Use key science terms (force, net force, balanced, unbalanced, friction, constant velocity)

Learning Objectives

• Explain how ocean currents move water and transport heat around Earth.
• Identify how wind patterns and Earth’s rotation influence surface currents.
• Describe how warm and cold currents affect coastal climates compared with inland areas.

Learning Objectives

• Explain how heat transfer changes energy in matter and can change temperature.
• Describe how energy changes lead to phase changes such as melting, evaporation, and boiling.
• Use particle ideas to connect energy with the arrangement and motion of matter.

Learning Objectives

• Compare energy production methods by considering intermittency, land and habitat footprint, and resource availability.
• Explain how lifecycle impacts (construction, operation, decommissioning, and waste) affect net environmental outcomes.
• Describe trade-offs between fossil fuel power and renewable energy sources in terms of greenhouse gas emissions and reliability.

Learning Objectives

• Identify independent, dependent, and controlled variables in a scientific test
• Explain why controlled factors must be kept constant to reduce alternative explanations
• Use evidence such as measurements and graphs to describe relationships between variables

Learning Objectives

• Identify everyday examples of water phase changes caused by heating and cooling
• Explain how melting, freezing, evaporation, and condensation describe changes between states of matter
• Connect temperature/heat energy to visible changes in water (solid, liquid, gas)

Learning Objectives

• Explain how photosynthesis converts light energy into chemical energy stored in organic molecules
• Describe the roles of chlorophyll, light-dependent reactions, and the Calvin cycle
• Interpret how photosynthesis affects oxygen release and carbon availability in ecosystems+ Show more

Learning Objectives

• Explain how ecological succession proceeds after a disturbance or new habitat formation.
• Identify roles of pioneer species and later species in changing community structure over time.
• Analyze how abiotic factors (climate, soil, disturbance type/frequency) shape succession pathways.+ Show more

Learning Objectives

• Explain how models represent real phenomena using simplified features that highlight key relationships.
• Connect parts of a model (drawings, diagrams, physical objects, and symbols) to scientific ideas and variables.
• Identify what a model can and cannot show, including limitations.+ Show more

Learning Objectives

• Explain how the engineering design process includes planning, building, and testing
• Identify how criteria and constraints guide the planning of a solution
• Describe how testing results can lead to refinement while staying within constraints+ Show more

Learning Objectives

• Explain why organisms are placed into groups by using observable traits as evidence.
• Use classification reasoning to compare similarities and differences between organisms.
• Describe how classifications can change when new traits or evidence are considered.

Learning Objectives

• Explain how producers, consumers, and predators are connected in a food web
• Describe how changes in one population can affect multiple other populations in an ecosystem
• Use evidence from a text and examples to predict outcomes in a food web+ Show more

Learning Objectives

• Identify observable and measurable properties of matter
• Compare how properties such as color, texture, state, mass, volume, and density describe substances
• Explain how properties can stay the same or change during physical transformations

Learning Objectives

• Explain the difference between mass and volume as measurable properties of matter
• Identify appropriate units and tools used to measure mass and volume
• Compare properties across different samples, including how shape can change volume without changing mass

Learning Objectives

• Explain how engineers translate a real-world need into a defined problem statement.
• Identify how criteria and constraints affect what a solution must do and what it must follow.
• Use criteria and constraints to guide design choices and keep solutions focused.

Learning Objectives

• Explain how photosynthesis and cellular respiration transform energy and exchange gases in cells.
• Describe how diffusion moves materials across cell membranes using concentration gradients.
• Compare diffusion with transport mechanisms and explain why both are needed for cell survival.

Learning Objectives

• Explain cause-and-effect relationships between predator and prey population changes in an ecosystem.
• Use evidence to describe how prey behaviors or traits can reduce predation success.
• Interpret food web interactions using appropriate scientific vocabulary such as predator, prey, and population density.

Learning Objectives

• Explain how electromagnetic waves carry energy using coupled electric and magnetic fields
• Use frequency–wavelength relationships to predict how signals behave in different media
• Describe reflection, refraction, attenuation, dispersion, and polarization in signal transmission

Learning Objectives

• Explain how Earth’s rotation on its axis causes the daily pattern of day and night.
• Describe how the sunlight portion of Earth changes for different locations over one day.
• Use evidence from observations (sky, shadows, temperatures) to connect day/night changes to Earth’s rotation.

Learning Objectives

• Explain how meiosis creates genetic variation through chromosome segregation and independent assortment.
• Describe how recombination and the mixing of alleles can lead to differences among siblings.
• Connect genetic variation to survival and reproduction in changing environments.

Learning Objectives

• Explain that moon phases happen because we see different portions of the moon’s sunlit half as Earth, the moon, and the sun change positions.
• Identify key phase terms (new moon, first quarter, full moon, last quarter) and describe how their appearances relate to illumination and shadow.
• Use evidence from observations (geometry and predictable cycles) to describe why moon phases follow a roughly monthly pattern.

Learning Objectives

• Identify common structural forms (arches, beams, frames) and describe how their shapes help them support loads.
• Explain how compressive and bending forces affect different structures in real-world examples.
• Compare span, curvature, and connection types to predict strength and stability.

Learning Objectives

• Explain how test data guide specific design changes toward a success criterion
• Describe how evidence-based revisions can improve performance while meeting constraints
• Use measurements and comparisons to justify why a revised design works better