Grade 6 Science Worksheets

Learning Objectives

• Differentiate accuracy and precision in scientific measurements
• Select appropriate measurement tools and units for data collection
• Explain how systematic and random errors affect measurement results+ 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 why scientists use models to represent systems that are too large, too small, or too complex to study directly.
• Describe how effective scientific models connect observable features to underlying ideas and clarify what the model can and cannot represent.
• Use evidence from measurements to compare model outputs to real data and identify limitations.

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 animals need both matter and energy to live, grow, and function
• Describe how food provides matter that becomes parts of an animal’s body
• Describe how food provides energy that supports life processes such as movement and maintaining body temperature+ Show more

Learning Objectives

• Explain how photosynthesis provides carbon-based molecules that plants use to build new tissues.
• Describe how carbohydrates, proteins, and fats contribute to plant structure and function.
• Connect plant biomass growth to a continuous supply of matter and energy through chemical processes.

Learning Objectives

• Explain what cellular respiration is and why cells need it
• Describe the role of oxygen and the release of energy during cellular respiration
• Identify how matter changes during respiration and how wastes are produced

Learning Objectives

• Explain how chemical energy in food molecules is transformed to power life processes.
• Describe how energy is conserved in organisms as it changes form (useful energy and heat).
• Use evidence from a scientific passage to support claims about how feeding supports sustained functioning.

Learning Objectives

• Explain how competition for limited resources can affect survival and reproduction
• Describe direct and indirect competition and give examples
• Use cause-and-effect reasoning to connect resource availability to population changes

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 energy moves through trophic levels in an ecosystem
• Describe why usable energy decreases at each step in a food chain
• Use energy-flow reasoning to predict ecosystem patterns at higher trophic levels

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 energy moves through ecosystems using producers, consumers, and decomposers.
• Describe how a food web shows multiple energy pathways compared with a single food chain.
• Use trophic level vocabulary to trace energy transfer between organisms.

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 how birth rates and death rates affect population size over time
• Describe how resource availability can increase or decrease populations
• Use population data patterns to infer changes in environmental conditions

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

• Compare the properties of substances before and after an interaction to determine what evidence is present
• Distinguish between changes that do not form new substances and interactions that produce new substances
• Use observable evidence (color change, gas release, new solid, and new material) to support chemical reasoning

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

• Explain mass conservation in terms of conserved atoms within a closed system.
• Connect particle-level conservation of atoms to macroscopic measurements of mass.
• Use vocabulary such as reactants, products, and closed system to describe conservation events.

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

• Explain how particle models describe physical changes using the ideas of particle arrangement and state change.
• Use particle models to describe chemical reactions as rearrangements of atoms into new combinations.
• Connect evidence of new substances to conservation of atoms in both physical changes and chemical reactions.

Learning Objectives

• Explain how and why new substances can form different properties after a chemical reaction.
• Use macroscopic observations (solubility, conductivity, melting behavior) to distinguish new substances from physical changes.
• Connect particle models to changes in composition caused by atomic rearrangement.

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 physical changes alter a substance’s form or state without changing its atomic composition
• Identify common examples of physical changes such as melting, freezing, tearing, and dissolving
• Compare physical changes to chemical changes using observable properties and reversibility

Learning Objectives

• Explain the difference between reactants and products in a chemical reaction.
• Describe how product properties can differ from reactant properties to support the idea that a reaction occurred.
• Use particle diagrams to show that atoms are rearranged into new combinations during a reaction.+ Show more

Learning Objectives

• Explain how atoms rearrange during a chemical reaction to form new substances
• Describe how the properties of products depend on new atomic arrangements rather than just mixing
• Use particle and atomic models to predict what changes and what stays the same in chemical reactions

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 moving water erodes Earth materials and transports sediment
• Describe how decreasing water energy leads to deposition
• Connect erosion and deposition to landform features such as river terraces and deltas+ 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