Grade 6 Science Worksheets

Learning Objectives

• Explain the difference between precision and accuracy using measurement examples.
• Choose appropriate units and tools to improve measurement quality.
• Identify sources of error and describe how consistent procedures and calibration reduce error.+ Show more

Learning Objectives

• Use evidence such as measurements and observations to support scientific claims.
• Explain why evidence must be relevant and described consistently in appropriate units or terms.
• Distinguish correlation from causation when interpreting data.+ Show more

Learning Objectives

• Explain how observations lead to scientific questions and investigations
• Use evidence and logical reasoning to support or reject an explanation
• Apply measurement and observation vocabulary to describe changes over time+ Show more

Learning Objectives

• Explain how scientific models help scientists represent systems that are too large, too small, or too complex to study directly.
• Describe how observable features and measurements provide evidence to support or refine scientific models.
• Identify the limits of a model by comparing what the model shows with real-world data.

Learning Objectives

• Explain how a testable prediction connects evidence, a model, and an explanation.
• Identify how observations can support a prediction or show a mismatch that requires refinement.
• Use criteria and measurement uncertainty to communicate how strongly evidence supports a model.

Learning Objectives

• Differentiate heat and temperature based on what each describes and how energy moves.
• Explain how temperature relates to average particle kinetic energy.
• Predict how systems warm or cool when there is a temperature difference.

Learning Objectives

• Explain how photosynthesis provides carbon-based molecules for plant growth.
• Describe how different plant molecules (carbohydrates, proteins, fats) help build plant tissues.
• Connect biomass building to the need for a continuous supply of matter and energy.

Learning Objectives

• Explain how chemical energy stored in food is released to power life processes.
• Describe how energy changes form in organisms (including heat loss).
• Use the idea that matter/energy is not created or destroyed to interpret food-energy changes.

Learning Objectives

• Explain how decomposers break down dead organisms and waste to recycle matter in ecosystems.
• Describe how atoms and molecules are returned to soil and water in forms that producers can use again.
• Connect decomposition to nutrient availability and continued ecosystem functioning.

Learning Objectives

• Describe how cellular respiration converts energy in food into energy cells can use
• Explain the role of oxygen and the exchange of gases during cellular respiration
• Connect products of cellular respiration to what leaves the body as waste

Learning Objectives

• Use particle models to count atoms of each element on both sides of a chemical reaction
• Explain how conservation of matter is supported by matching atom counts in reactants and products
• Use evidence from particle-level reasoning to justify claims about new substances

Learning Objectives

• Explain why usable energy decreases from one trophic level to the next.
• Describe how some energy becomes heat and how the rest becomes biomass for organisms at higher levels.
• Use a food chain example to predict how many organisms can be supported at each trophic level.

Learning Objectives

• Explain that compounds form when atoms of different elements combine in fixed, definite proportions.
• Use particle models to describe how atoms connect in a compound.
• Relate atomic composition to observable properties such as density and chemical behavior.

Learning Objectives

• Explain how food provides chemical building materials and stored energy to the body.
• Describe how digestion breaks large food molecules into smaller molecules that can be absorbed.
• Connect specific food molecules with different body needs (like proteins for structure and carbohydrates for quick energy).+ Show more

Learning Objectives

• Explain how plants get matter for growth from air and water
• Describe how leaves and roots help plants exchange and take in raw materials
• Connect water to chemical processes inside plant cells

Learning Objectives

• Explain mass conservation in terms of conservation of atoms in a closed system.
• Connect particle-level changes to macroscopic measurements of reactants and products.
• Use evidence from a model to predict whether total mass changes in a closed reaction.

Learning Objectives

• Explain how energy moves through ecosystems from producers to consumers and decomposers.
• Describe how food webs show multiple feeding relationships instead of a single chain.
• Use vocabulary such as producer, consumer, decomposer, trophic level, and nutrient cycling in context.

Learning Objectives

• Explain how photosynthesis provides energy for plant growth, repair, and reproduction
• Describe how plants store chemical energy in molecules to use later
• Connect matter changes in plant parts (leaves, stems, roots, and reproductive parts) to energy transformations

Learning Objectives

• Explain how limiting resources affect population size in an ecosystem.
• Identify examples of limiting resources such as nutrients, water, and space.
• Describe how organisms may respond when resources become scarce.

Learning Objectives

• Explain how carbon moves through air, water, and living organisms in an ecosystem
• Distinguish matter cycling from energy flow in food chains and trophic pathways
• Use carbon-cycle processes (photosynthesis, respiration, decomposition) to describe how matter is reused

Learning Objectives

• Explain how photosynthesis converts light energy into chemical energy stored in sugar molecules.
• Identify reactants and products of photosynthesis and describe the role of oxygen release.
• Describe how energy flows from the Sun to producers and then to other organisms through feeding.

Learning Objectives

• Explain how birth rate, death rate, and resource availability affect population size over time.
• Interpret data trends to infer whether a population is increasing or decreasing and why.
• Use evidence from seasonal or habitat changes to support a population-change claim.

Learning Objectives

• Explain how atoms are conserved during chemical reactions using particle diagrams.
• Describe reactants and products as rearrangements of atoms rather than creation or destruction.
• Use particle-level evidence to connect conservation of atoms to observable changes.

Learning Objectives

• Explain how particle models describe matter as being made of particles and how atoms build elements.
• Identify how different combinations and relative numbers of atoms help determine properties like density and melting point.
• Connect atomic composition to observable/measureable properties rather than only macroscopic appearance.

Learning Objectives

• Explain how scientists compare properties of substances before and after an interaction to determine if a new substance forms.
• Identify evidence of chemical change, including changes in color, formation of a solid, gas release, and new material with different behavior.
• Distinguish between physical changes (appearance changes without new substances) and chemical changes (new substances with new properties).

Learning Objectives

• Identify chemical evidence by observing changes such as color change, gas formation, and precipitates.
• Explain why chemical evidence shows a change in composition, not just temporary mixing.
• Use examples like iron rusting and burning paper to connect observations to particle-level changes.

Learning Objectives

• Explain how mixtures and compounds differ in particle arrangement and atomic composition
• Identify examples of mixtures and compounds using particle model ideas
• Describe how physical separation often works for mixtures but not for compounds

Learning Objectives

• Explain how particle models distinguish physical changes from chemical reactions.
• Use particle ideas to describe how atoms and arrangements change during matter changes.
• Connect evidence of new substances to conservation of atoms.

Learning Objectives

• Explain how new substances form when atoms rearrange during a chemical change.
• Use macroscopic properties (such as solubility, conductivity, and melting behavior) to infer that composition has changed.
• Compare properties of reactants and products to distinguish chemical change from physical change.

Learning Objectives

• Explain how particle models represent matter using atoms and molecules that occupy space.
• Use particle models to predict how properties and composition change during reactions.
• Interpret particle diagrams to identify elements, compounds, and differences in bonding patterns.

Learning Objectives

• Describe what physical changes do to matter and how they differ from chemical changes
• Identify examples of physical changes such as melting, freezing, tearing, and dissolving
• Explain how physical changes can be reversible and how the atoms stay the same

Learning Objectives

• Identify reactants and products in a chemical reaction scenario
• Explain how product properties can differ from reactant properties as evidence that a reaction occurred
• Use particle diagrams to describe how atoms are rearranged during a reaction

Learning Objectives

• Explain how rearranging atoms in a chemical reaction leads to new substances
• Use evidence from particle models to describe what changes and what stays the same
• Predict how new atomic arrangements can change the properties of products

Learning Objectives

• Explain how water vapor changes into liquid droplets or ice crystals during condensation.
• Describe how cloud formation connects atmospheric conditions to rainfall.
• Connect clouds to energy balance by explaining how they affect sunlight.

Learning Objectives

• Identify Earth’s major spheres (geosphere, hydrosphere, atmosphere, biosphere) and describe how they interact.
• Explain how energy and gravity help move matter and influence changes across Earth systems.
• Use cause-and-effect reasoning to predict how changes in one sphere can affect other spheres.

Learning Objectives

• Explain how energy from the Sun and gravity drive Earth system processes such as heating, evaporation, and the movement of water and sediments.
• Describe how changes in energy affect water’s state and how this relates to evaporation and cloud formation.
• Connect energy-driven weathering and transport to changes in where sediments and soils accumulate.

Learning Objectives

• Explain how moving water erodes materials, transports sediment, and deposits it elsewhere.
• Describe how water volume, flow speed, and surface material affect erosion and deposition.
• Identify real-world landforms and deposits formed by deposition over time.

Learning Objectives

• Explain how evaporation adds water vapor to the atmosphere when temperatures increase.
• Describe how transpiration from plants contributes water vapor to the air.
• Connect phase changes to the hydrosphere and atmosphere and the start of precipitation.

Learning Objectives

• Explain how precipitation infiltrates and percolates to recharge groundwater stored in aquifers.
• Describe how groundwater can supply streams as baseflow and help maintain river flow during dry periods.
• Identify how permeability and landscape geometry affect the connection between groundwater and surface water.+ Show more

Learning Objectives

• Explain how human actions can change the movement of water through Earth systems
• Describe how dams, withdrawals, pollution, and land-cover change can affect water quality and habitats
• Use cause-and-effect reasoning to predict impacts on aquatic life and flood risk

Learning Objectives

• Explain how physical and chemical weathering break rocks into sediments
• Describe how sediments move and deposit to form layered materials over time
• Connect biological processes to the formation of soil and nutrient availability+ Show more

Learning Objectives

• Explain how precipitation returns water to Earth’s surface.
• Describe how infiltration affects soil moisture and possible groundwater recharge.
• Compare infiltration and surface runoff as pathways for water movement.+ Show more

Learning Objectives

• Describe how water moves through a watershed using interconnected pathways shaped by terrain and land cover.
• Explain how gravity, infiltration, and vegetation affect the timing and amount of water moving downstream.
• Connect watershed processes to downstream conditions such as stream flow, erosion, and water quality.

Learning Objectives

• Identify major water reservoirs on Earth and describe the form of water each one stores.
• Explain how state changes move water between reservoirs and affect where water is available over time.
• Distinguish between fast and gradual water movement between reservoirs using examples.

Learning Objectives

• Explain how organisms compete for limited resources and how that affects survival and reproduction
• Describe how competition can be direct or indirect when organisms share requirements
• Use evidence to predict which species is more likely to persist under different resource conditions

Learning Objectives

• Interpret observational and instrumental data to identify patterns in natural hazards.
• Estimate recurrence intervals from hazard histories to support risk assessment.
• Use data records (e.g., seismic, tsunami, storms, floods) to infer likely locations and magnitudes of future events.+ Show more

Learning Objectives

• Explain how slow and rapid geologic processes modify Earth’s surface over different time scales.
• Use evidence such as rock strata, fossils, uplifted terraces, and erosion rates to support claims about landscape evolution.
• Compare how rivers and glaciers transport sediment and reshape landforms.

Learning Objectives

• Explain where common synthetic materials come from by connecting natural resources to manufactured products
• Compare material properties (durability, flexibility, conductivity, and biodegradability) to material selection
• Describe how synthetic materials are processed and how that affects recycling and everyday use