Grade 6 Science Worksheets

Learning Objectives

• Explain how photosynthesis provides carbon-based molecules that plants use to build new tissues.
• Describe how plant growth increases biomass by incorporating atoms from carbon dioxide and other inputs into cells.
• Distinguish between the roles of carbohydrates, proteins, and fats in plant structure and living systems.

Learning Objectives

• Explain how comparing a substance’s properties before and after an interaction can indicate what changed.
• Identify evidence that a new substance formed versus a physical change without forming a new substance.
• Use property clues (color change, gas, solid, new material) to reason about chemical vs. physical changes.

Learning Objectives

• Identify observable indicators that a chemical reaction has formed a new substance.
• Explain how chemical evidence suggests changes in composition rather than temporary mixing.
• Use examples (such as rusting and burning) to connect evidence to particle-level rearrangements.

Learning Objectives

• Explain how particle models distinguish physical changes from chemical reactions.
• Use particle diagrams to describe whether atoms rearrange into new combinations.
• Connect evidence of new substances to conservation of atoms using particle models.

Learning Objectives

• Identify the major Earth system spheres: geosphere, hydrosphere, atmosphere, and biosphere
• Explain how matter and energy move between spheres using key processes such as weathering and evaporation
• Use gravity and rainfall patterns to describe cause-and-effect interactions across Earth systems

Learning Objectives

• Explain how energy from the Sun drives changes in water state, including evaporation and cloud formation
• Describe how gravity influences the movement and accumulation of water and sediment on slopes
• Connect energy to Earth material cycling, including weathering rates and how sediments and soils change over time

Learning Objectives

• Explain how uneven heating of Earth drives rising and sinking air that forms global wind patterns.
• Describe how warm air and cool air differ in density and how that affects movement in the atmosphere.
• Connect atmospheric circulation to moisture transport and the development of storms.+ Show more

Learning Objectives

• Differentiate between heat and temperature using particle motion and energy transfer
• Explain how temperature and heat are affected by the amount of material (mass/size of container)
• Use warming/cooling patterns to describe the direction of energy flow

Learning Objectives

• Explain how inherited adaptations help organisms survive and reproduce in a specific environment.
• Describe how living and nonliving environmental pressures can make certain traits more valuable.
• Use vocabulary such as adaptation, inherited trait, environment, and survival to answer science questions.

Learning Objectives

• Explain how organisms in an ecosystem depend on each other for resources and survival
• Describe how predators, prey, competition, and mutualism affect population sizes
• Predict how a change in one population can ripple through a community

Learning Objectives

• Explain how reflection follows angle relationships when light meets a surface
• Describe how refraction changes the direction of light as it moves between media
• Use ideas about refractive index and lenses to predict what happens to images and light paths

Learning Objectives

• Explain how filtration and sieving separate mixtures using particle size and a barrier or screen
• Identify the correct method for separating different mixtures (sand-water, flour-grain sorting)
• Describe how the design of a filter or sieve affects what passes through and what gets trapped

Learning Objectives

• Explain how temperature, water availability, light intensity, soil composition, pH, and salinity (abiotic factors) affect habitat conditions
• Describe how environmental gradients (changes across space or seasons) influence where organisms can survive and how they move or select microhabitats
• Use examples to connect physical conditions to biological processes such as metabolism, root growth, and population changes

Learning Objectives

• Identify producers, consumers, and decomposers and describe what each role does in a food chain
• Determine trophic levels (primary, secondary, tertiary) and explain how energy transfers between levels
• Compare linear food chains with networked food webs and explain why energy loss affects population size and stability

Learning Objectives

• Compare solids, liquids, and gases using particle arrangement and relative motion.
• Describe macroscopic traits such as shape retention and compressibility for each state of matter.
• Use everyday examples (ice, liquid water, water vapor) to connect state changes with density and molecular spacing.+ Show more

Learning Objectives

• Explain how scientific evidence is used to inform policy decisions about complex societal problems.
• Describe how risk assessment and uncertainty affect decision-making choices.
• Use cost-benefit reasoning and stakeholder values to justify a policy or response strategy.+ Show more

Learning Objectives

• Explain how matter cycles between living and non-living parts of an ecosystem.
• Use a cycles-of-matter model to identify reservoirs (storage) and flows (movement).
• Describe how carbon and water move through air, soil, water, plants, and animals.

Learning Objectives

• Explain how the lithosphere, hydrosphere, atmosphere, and biosphere interact as connected Earth systems.
• Describe how energy from the Sun drives cycles that move water, gases, and heat.
• Use cause-and-effect reasoning to predict how changes in one Earth system affect other systems over time.

Learning Objectives

• Explain how physical changes alter a substance’s form or state without changing the basic atomic composition.
• Identify examples of physical changes (melting, freezing, tearing, dissolving) and describe what happens to particles and properties.
• Use evidence (reversibility, state changes, and particle behavior) to distinguish physical changes from chemical changes.

Learning Objectives

• Interpret how species occurrence and richness can reveal spatial and temporal biodiversity patterns
• Compare biodiversity patterns across islands, along latitudes, and among habitats with different heterogeneity
• Explain how historical records and present-day surveys help estimate turnover and community composition+ Show more

Learning Objectives

• Explain how heritable variation and environmental pressures lead to natural selection.
• Describe how differential reproductive success changes trait frequencies over generations.
• Connect examples (finches, pollution, antibiotic resistance) to selection-driven shifts in populations.

Learning Objectives

• Explain how the particle model describes matter as particles in constant motion
• Use particle spacing and motion to describe phases and changes of state (melting, freezing, boiling, condensation)
• Relate temperature and thermal energy to particle kinetic energy and gas pressure in a qualitative way

Learning Objectives

• Explain how major cell organelles contribute to essential cell functions (energy, protein synthesis, waste removal, and regulation).
• Use a model of plant and animal cells to identify similarities and differences in organelle structure and function.
• Connect organelle roles to cell outcomes such as making proteins, producing energy, and controlling activities.

Learning Objectives

• Compare multiple design solutions using established criteria and constraints.
• Use both qualitative and quantitative metrics to evaluate solutions (e.g., efficiency, durability, manufacturability, cost).
• Justify which prototype to refine by using evidence and a scoring approach.

Learning Objectives

• Explain how genetic differences and environmental factors can both cause observable variation in individuals.
• Use allele and mutation ideas to describe how inherited traits can produce a range of phenotypes.
• Analyze examples (animals and plants) to identify which variations are inherited and which are environment-dependent.

Learning Objectives

• Explain how neurons transmit information as electrical impulses and communicate at synapses using neurotransmitters.
• Describe how integration centers interpret sensory input and produce motor output to control muscles and glands.
• Compare nervous regulation with endocrine signaling in coordinating short-term and long-term body responses.

Learning Objectives

• Differentiate between mixtures, homogeneous mixtures (solutions), and heterogeneous mixtures using observable properties.
• Explain how physical properties (particle size, solubility, density, and magnetism) help separate mixture components.
• Select an appropriate separation method (filtration, evaporation, or decanting) based on the mixture type and component differences.

Learning Objectives

• Identify how different conservation strategies (protected areas, habitat restoration, sustainable harvesting, invasive species control) help ecosystems maintain balance
• Explain how conservation strategies involve trade-offs among ecological goals, economic needs, and social values
• Use monitoring to evaluate whether conservation actions improve habitat and species survival over time

Learning Objectives

• Explain what a scientific model is and how it can help represent an idea.
• Identify assumptions in a model and describe them in plain language.
• Use evidence to judge whether a model’s predictions match observed results.+ Show more

Learning Objectives

• Explain how net force affects an object’s motion by changing speed or direction
• Differentiate balanced forces and unbalanced forces using real-life examples
• Use evidence from everyday situations to infer whether forces are balanced or unbalanced+ Show more

Learning Objectives

• Define keystone species and explain why they can have a larger impact than their abundance suggests
• Describe how keystone species can cause cascading effects through trophic levels in an ecosystem
• Use evidence-based indicators to infer keystone status and predict impacts on biodiversity and habitat

Learning Objectives

• Explain how birth rate, death rate, immigration, and emigration affect population size over time
• Describe how carrying capacity and limiting factors control whether populations grow exponentially or logistically
• Distinguish density-dependent and density-independent factors using examples from terrestrial and aquatic systems+ Show more

Learning Objectives

• Explain how habitat fragmentation divides landscapes and reduces habitat connectivity for organisms
• Describe how fragmentation can affect gene flow, pollinator movement, and species interactions
• Identify edge effects and isolation and predict likely consequences for food web stability+ Show more

Learning Objectives

• Explain how heritability connects genetic variation to trait differences in populations
• Differentiate heritable influences from environmental influences on traits
• Describe how natural selection can shift allele frequencies over generations

Learning Objectives

• Explain the difference between the independent variable and the dependent variable in an investigation.
• Identify which factors should be controlled to make evidence reliable.
• Use a plan to clearly separate the changing factor from measured outcomes.+ Show more

Learning Objectives

• Explain how multi-criteria design balances lift, drag, weight, stability, and manufacturability.
• Describe Pareto trade-offs and how a performance envelope guides selection of viable designs.
• Use parameter tuning and structural constraints to predict how design changes affect performance and safety margins.

Learning Objectives

• Identify the main categories of artificial satellites by their purpose (operational, scientific, and reconnaissance).
• Describe how different orbits (geostationary and polar) match different mission goals.
• Explain how satellite sensors and payloads help monitor Earth systems and space phenomena.+ Show more

Learning Objectives

• Use proper conventions to label axes and choose scales when creating tables and graphs.
• Interpret data displays (tables, line graphs, bar graphs, scatter plots) to identify trends and relationships.
• Recognize outliers and patterns in data representations and use them to compare results across conditions.

Learning Objectives

• Identify different sources of error in scientific measurements and explain how they affect results.
• Distinguish random error from systematic error using examples and patterns in data.
• Estimate the impact of measurement uncertainty on conclusions by considering error propagation.

Learning Objectives

• Explain how voltage, current, and resistance are related using proportional reasoning suitable for grade 6.
• Use given values of voltage, current, or resistance to determine an unknown circuit quantity.
• Predict how current changes when resistance changes for a fixed voltage difference, including series and parallel comparisons.

Learning Objectives

• Describe the key characteristics of parallel circuits, including multiple branching pathways and equal potential difference across branches.
• Explain how current divides in parallel circuits and how overall current equals the sum of branch currents.
• Compare how loads in parallel circuits behave independently and how parallel circuits differ from series circuits during faults.

Learning Objectives

• Organize quantitative and qualitative observations into clear tables and graphs.
• Choose appropriate graph types and correctly label axes, scales, units, and legends.
• Interpret graphs by identifying trends, outliers, and basic summary measures (mean and median).+ Show more

Learning Objectives

• Explain how roles, shared documentation standards, and communication protocols improve team science projects.
• Use trackable versioning and clear attribution to make scientific records transparent and reproducible.
• Practice constructive critique by using agreed-upon review and decision-making processes to resolve conflicting observations.

Learning Objectives

• Explain how current stays the same in all elements of a series circuit.
• Describe how total voltage is divided across series components.
• Predict how adding components changes resistance and bulb brightness in a series circuit.+ Show more

Learning Objectives

• Explain why organisms compete for limited resources such as space, light, water, and nutrients
• Describe how traits and behaviors affect access to resources during competition
• Predict how competition can change population sizes and influence which species persist in a community

Learning Objectives

• Explain how decomposers (fungi and bacteria) break down dead organisms and waste
• Describe how decomposers return nutrients to soil and water for producers to reuse
• Connect decomposer activity to ecosystem productivity, growth patterns, and long-term sustainability

Learning Objectives

• Explain how predator and prey populations affect each other in an ecosystem
• Identify examples of prey adaptations that reduce predator capture
• Describe cause-and-effect feedback loops in food webs+ Show more

Learning Objectives

• Describe how gravity causes mass wasting and how unstable slopes lead to movement of rock and soil.
• Explain how water, freeze-thaw, earthquakes, and erosion can trigger mass wasting.
• Compare rockfalls, landslides, and slumps using key features and examples.+ Show more