Grade 6 Science Worksheets

Learning Objectives

• Explain how scientific claims should be supported by relevant evidence
• Distinguish correlation from causation in data-based reasoning
• Use units, measurements, and observations consistently to strengthen explanations+ Show more

Learning Objectives

• Explain how scientific inquiry begins with careful observations and leads to testable questions
• Identify how measurement and evidence support reliable explanations in investigations
• Use logical reasoning to connect results to conclusions and communicate findings clearly

Learning Objectives

• Explain how a scientific model can lead to a testable prediction.
• Describe how observations either support a prediction or show where a model needs revision.
• Use criteria and uncertainty to evaluate results and communicate confidence in findings.

Learning Objectives

• Explain how decomposers recycle matter in ecosystems by breaking down dead organisms and waste
• Describe how atoms and nutrients move from living things to nonliving parts of an ecosystem (soil and water) and back to producers
• Compare the roles of decomposers and producers in maintaining ecosystem functioning

Learning Objectives

• Explain how food molecules provide both building materials and stored energy in the body.
• Describe how digestion breaks large food molecules into smaller molecules that can be absorbed.
• Identify how different food molecules (proteins, carbohydrates, fats) meet different needs of cells.+ Show more

Learning Objectives

• Explain how photosynthesis provides energy and matter for plant growth.
• Describe why plants store chemical energy and how they use it when light is limited.
• Identify how plant structures change over time through ongoing energy transformations and matter use.

Learning Objectives

• Explain how limiting resources affect population size in ecosystems.
• Identify examples of limiting resources such as water, nutrients, or space.
• Describe how organisms may respond to scarcity, but why population growth eventually slows.

Learning Objectives

• Explain how carbon atoms cycle through air, water, and living organisms in an ecosystem
• Distinguish between matter cycling (conservation of atoms) and energy flow (one-way transformation)
• Describe how carbon moves from plants to animals and returns to the environment through respiration and decomposition

Learning Objectives

• Explain how photosynthesis converts light energy into chemical energy stored in glucose and other carbon-based molecules.
• Describe the roles of water, carbon dioxide, and sunlight in the light-dependent steps and the Calvin cycle.
• Identify oxygen as a byproduct of photosynthesis and explain how photosynthesis supports life on Earth.

Learning Objectives

• Explain how carbon dioxide, water, and gases from the atmosphere provide raw materials for plant growth
• Describe how roots, leaves, and plant cells use environmental inputs to build biomass
• Use evidence from text to answer questions about matter entering and leaving plant systems

Learning Objectives

• Explain conservation of atoms during chemical reactions as rearrangements of atoms into new combinations
• Use particle diagrams to track atoms in reactants and products
• Predict whether a reaction description or diagram conserves atoms by counting atoms of each element

Learning Objectives

• Explain how particle models describe matter using atoms and particles too small to see
• Relate the composition of atoms in substances to observable physical and chemical properties
• Use particle-level reasoning to predict how changes in matter affect properties

Learning Objectives

• Identify observable indicators that a chemical reaction has occurred.
• Differentiate chemical evidence from signs of physical change.
• Connect evidence of new substances to particle-level rearrangements.

Learning Objectives

• Explain the conservation of atoms by counting each type of atom on the reactant and product sides of a particle model.
• Use particle-level reasoning to predict whether a chemical reaction forms new combinations while conserving the number of atoms of each element.
• Justify reaction outcomes using evidence based on atom counts rather than mass changes or appearance alone.

Learning Objectives

• Explain what compounds are and how they form from atoms of different elements.
• Describe how particle models show compounds with definite bonding arrangements.
• Use element ratios in compounds to predict properties and understand macroscopic differences.

Learning Objectives

• Differentiate mixtures and compounds using particle models
• Explain how composition affects properties of matter
• Use physical vs chemical ideas to predict whether a sample can be separated

Learning Objectives

• Describe how particle models represent matter as atoms and molecules that occupy space
• Use particle models to explain how rearranging particles can cause matter to change
• Connect particle-level composition to observable properties of substances

Learning Objectives

• Explain how cooling and vapor pressure changes lead to condensation or ice crystal formation in the atmosphere
• Describe how clouds form from condensed droplets or ice crystals and how this relates to the water cycle
• Compare how clouds affect Earth’s energy balance by reflecting sunlight and trapping infrared radiation+ Show more

Learning Objectives

• Explain how Earth’s four system spheres—geosphere, hydrosphere, atmosphere, and biosphere—interact
• Describe how matter and energy move between spheres through processes such as weathering, evaporation, cloud formation, and biological activity
• Use gravity and energy concepts to predict how changes in one sphere can affect other spheres

Learning Objectives

• Explain how energy from the Sun and gravity influence Earth system processes such as heating, water movement, and sediment transport.
• Describe how phase changes in water relate to evaporation and cloud formation.
• Use cause-and-effect reasoning to predict how energy and gravity shape the distribution of sediments and soils over time.+ Show more

Learning Objectives

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

Learning Objectives

• Explain how precipitation can infiltrate, percolate, and recharge groundwater aquifers.
• Describe how groundwater contributes to streamflow as baseflow during dry periods.
• Interpret how permeability and landscape geometry affect the groundwater–surface water connection.

Learning Objectives

• Explain how dams, withdrawals, and land-use changes can alter the timing and pathways of the water cycle
• Describe how changes in water flow can affect sediment transport and aquatic habitats
• Identify ways human pollution and habitat changes can impact water quality and living organisms

Learning Objectives

• Explain how weathering, sediment transport, and deposition move Earth materials through cycles.
• Describe how living things add organic matter to soils and affect water retention.
• Use cause-and-effect reasoning to connect transformations across Earth’s spheres.

Learning Objectives

• Explain how precipitation returns water to Earth and describe examples of precipitation types.
• Describe infiltration and runoff and how they affect soil moisture and groundwater recharge.
• Use gravity and landscape features to predict how water moves across or into the ground.

Learning Objectives

• Explain how Earth’s water is stored in major reservoirs such as oceans, lakes, rivers, groundwater, glaciers, and the atmosphere.
• Describe how changes in state and processes like precipitation, runoff, and infiltration move water between reservoirs.
• Compare whether water transfer between reservoirs is usually gradual or fast and provide examples.

Learning Objectives

• Explain how gravity, terrain, and land cover shape water movement within a watershed
• Describe how infiltration and soil storage affect the timing of runoff
• Connect vegetation and soil stability to erosion and sediment transport+ Show more

Learning Objectives

• Describe the processes of adaptation and how they lead to speciation.
• Identify factors contributing to reproductive isolation in populations.
• Use morphological, genetic, and biogeographical evidence to infer speciation events.+ Show more

Learning Objectives

• Understand how species occurrence and richness reveal biodiversity patterns across ecosystems.
• Compare spatial and temporal biodiversity among different habitats and regions.
• Interpret ecological and historical factors that influence biodiversity distribution.+ Show more

Learning Objectives

• Analyze fossil occurrences and stratigraphic sequences to understand Earth's history.
• Identify morphological transitions and their significance in fossil records.
• Understand methods of dating fossils and interpreting their environmental context.+ Show more

Learning Objectives

• Describe the process of natural selection and how it leads to changes in trait frequencies within populations.
• Explain how environmental pressures influence the survival and reproduction of organisms with different heritable traits.
• Identify real-world examples of natural selection, such as pigmentation changes, beak variation, and antibiotic resistance.+ Show more

Learning Objectives

• Understand how mathematical representations and graphs illustrate changes in population over generations.
• Analyze how environmental and demographic factors influence trait frequencies and population sizes.
• Apply proportional reasoning, interpret frequency charts, and analyze time-series graphs related to population change.+ Show more

Learning Objectives

• Compare and analyze anatomical and molecular traits in taxa.
• Interpret evolutionary relationships using phylogenetic trees.
• Identify homologous and vestigial structures in organisms.+ Show more

Learning Objectives

• Describe how atoms combine to form simple molecules like H2O and NaCl.
• Understand models such as ball-and-stick and space-filling representations used in chemistry.
• Explain how molecules and extended structures are represented with chemical formulas and diagrams.+ Show more

Learning Objectives

• Describe key indicators used to identify chemical reactions, including color change, gas evolution, precipitate formation, and temperature change.
• Interpret data such as mass, temperature, and composition before and after reactions to determine if a new substance has formed.
• Identify and analyze classic examples like acid–carbonate reactions and metal oxidation to understand criteria for chemical change.+ Show more

Learning Objectives

• Explain the principle of the conservation of mass through physical and chemical changes.
• Identify models and diagrams that demonstrate atom count constancy during reactions.
• Connect mass measurements before and after matter transformations to the concept of atom conservation.+ Show more

Learning Objectives

• Explain matter as composed of particles too small to see using particle models.
• Describe how particle motion, collisions, and spacing relate to states of matter and phase changes.
• Relate temperature and thermal energy to particle kinetic energy and pressure in gases.+ Show more

Learning Objectives

• Identify natural resources used to produce synthetic materials.
• Compare properties of natural and synthetic substances for specific applications.
• Understand processes involved in resource extraction and material manufacturing.+ Show more

Learning Objectives

• Compare different conservation strategies and their ecological trade-offs.
• Analyze case studies like coral reef restoration and riparian buffers.
• Evaluate the effectiveness of various biodiversity maintenance solutions.+ Show more

Learning Objectives

• Describe the components of food webs including producers, consumers, and decomposers.
• Explain the concept of energy pyramids and trophic transfer efficiency.
• Understand how photosynthesis and cellular respiration contribute to energy budgets.+ Show more

Learning Objectives

• Construct evidence-based arguments linking ecosystem alterations to population changes.
• Analyze case studies involving predator reintroduction, invasive species, habitat fragmentation, and disease outbreaks.
• Interpret empirical data sets and longitudinal observations to infer causal relationships in ecosystems.+ Show more

Learning Objectives

• Describe how resource availability affects individual organisms and populations.
• Interpret data related to resource distribution and species abundance.
• Identify limiting resources in different ecosystems and explain their effects.+ Show more

Learning Objectives

• Predict patterns of species interactions across different ecosystems.
• Identify mutualism, competition, predation, and parasitism as interaction types.
• Compare interaction outcomes in forest, grassland, and freshwater environments.+ Show more

Learning Objectives

• Identify key features of cells as the basic units of life through observational and comparative evidence.
• Distinguish between single-celled and multicellular organisms based on microscopy and specimen observations.
• Understand the relationships among cells, tissues, organs, and organisms in biological organization.+ Show more

Learning Objectives

• Identify the major organelles in plant and animal cells and their functions.
• Explain how cell structures relate to their specific roles in energy production, protein synthesis, waste removal, and regulation.
• Compare and contrast cell functions in plant and animal cells to understand specialization.

Learning Objectives

• Describe the processes of photosynthesis and respiration in plant and animal cells.
• Explain how energy is transferred through chemical reactions in biological systems.
• Identify reactants and products involved in photosynthesis and respiration.+ Show more

Learning Objectives

• Understand the concept of feedback mechanisms in maintaining internal stability.
• Identify examples of negative and positive feedback in physiological processes.
• Describe how sensors and effectors work together in homeostasis.+ Show more

Learning Objectives

• Explain the role of amino acids, nucleotides, fatty acids, and monosaccharides as molecular building blocks.
• Describe how monomers assemble into polymers via condensation reactions.
• Understand how macromolecules like proteins, nucleic acids, lipids, and carbohydrates function in biological systems.+ Show more