Grade 6 Science Worksheets

Learning Objectives

• Explain how scientific knowledge can change when new evidence conflicts with earlier ideas
• Differentiate scientific theories and scientific laws
• Describe how communication, peer evaluation, and reproducibility strengthen scientific evidence+ Show more

Learning Objectives

• Describe how trophic levels categorize organisms by their energy source and feeding role
• Differentiate producers, primary consumers, secondary consumers, and higher-level consumers
• Explain why decomposers are not placed neatly into consumer trophic levels+ Show more

Learning Objectives

• Explain what makes a scientific question testable by linking it to measurable evidence
• Identify variables (what changes), controls (what stays the same), and measurable outcomes (what you observe/record)
• Revise a broad question into a testable question by adding quantities and clearly defined evidence

Learning Objectives

• Explain how density relates mass to volume and use the ratio mass ÷ volume to interpret evidence
• Use float-and-sink observations to make claims about relative density compared with water
• Measure or estimate density from real samples and connect density evidence to layered mixtures

Learning Objectives

• Explain how environmental changes (temperature, drought, and food availability) affect which traits help organisms survive.
• Describe how differences in traits can change survival and reproduction within a population over time.
• Connect adaptation to ecosystem change by identifying how shifts in resources can alter which organisms remain.

Learning Objectives

• Explain how heat transfer changes energy in matter and affects particle motion
• Distinguish among melting, freezing, evaporation, and boiling as changes of state
• Describe how temperature and energy can change differently during phase changes

Learning Objectives

• Explain how magnetic separation separates a mixture based on magnetic properties.
• Identify what evidence shows which substance is magnetic and which is not.
• Describe the steps and observations in separating iron filings from sand using magnets.

Learning Objectives

• Explain how numerical and categorical observations can be represented in tables and graphs
• Identify appropriate labels, units, and scales that help readers interpret data correctly
• Use bar graphs and line graphs to compare categories and describe change over time

Learning Objectives

• Explain how evaporation separates a soluble solid from a liquid using state change
• Identify evidence that evaporation separation has occurred, such as disappearance of liquid and appearance of residue
• Compare evaporation separation with size-based separation methods (like filtration and sieving)

Learning Objectives

• Explain how long-term measurements differ from short-term weather observations
• Interpret climate graphs to identify averages, variability, and the likelihood of extremes
• Use historical baselines to compare current climate patterns and detect possible shifts

Learning Objectives

• Understand how human activities modify biogeochemical cycles and climate drivers.
• Identify examples of land-use change, fossil fuel combustion, agriculture, and waste management impacts.
• Analyze the causal links between human activities and environmental changes.+ Show more

Learning Objectives

• Explain the basic principles of distillation and how they are used to separate mixtures.
• Differentiate between simple distillation and fractional distillation.
• Understand how differences in boiling points facilitate the separation of liquids.+ Show more

Learning Objectives

• Understand the principle of conservation of mass in closed systems during physical and chemical changes.
• Recognize the differences between open and closed system measurements relating to mass.
• Identify processes that rearrange atoms versus those that suggest measurement limitations.+ Show more

Learning Objectives

• Understand the concept of phase changes and the energy transfer involved.
• Explain how particle motion and interactions change during melting, boiling, freezing, and condensation.
• Relate latent heat to particle behavior and temperature plateau during phase changes.+ Show more

Learning Objectives

• Understand the difference between physical and chemical changes.
• Identify examples of physical and chemical changes in everyday life.
• Explain how to distinguish between reversible and irreversible changes.+ Show more

Learning Objectives

• Understand observable signs that indicate a chemical reaction has occurred.
• Identify different chemical indicators such as gas production, precipitate formation, color change, energy emission, and light or sound release.
• Explain why multiple indicators are required to confirm a chemical change rather than relying on a single sign.+ Show more

Learning Objectives

• Understand the processes of filtration and sieving and how they separate mixtures.
• Identify different porous materials used in filtration and sieving.
• Explain the differences and similarities between filtration and sieving.+ Show more

Learning Objectives

• Explain how moving water causes erosion by detaching and transporting sediment
• Describe how decreased water energy leads to deposition and the formation of landforms
• Identify factors that affect erosion and deposition, including water volume, flow speed, and surface materials+ Show more

Learning Objectives

• Understand the nature of sound as a mechanical wave and how it transmits energy.
• Identify how frequency and amplitude affect pitch and loudness of sound.
• Explain the factors influencing the speed of sound in different media and conditions.+ Show more

Learning Objectives

• Explain how precipitation returns water to Earth’s surface and identify different types of precipitation
• Describe infiltration and how it contributes to soil moisture and groundwater recharge
• Compare infiltration and runoff using factors such as gravity, landscape, soil type, and vegetation+ Show more

Learning Objectives

• Explain how cellular respiration converts chemical energy in food into energy cells can use
• Describe the role of oxygen and the exchange of gases during cellular respiration
• Identify what happens to matter and energy products produced during respiration+ Show more

Learning Objectives

• Explain how decomposers break down dead organisms and waste to recycle matter in ecosystems.
• Describe how atoms and nutrients return to the environment in forms producers can use again.
• Connect decomposition to nutrient availability in soil and water and to ecosystem stability.

Learning Objectives

• Explain how chemical energy stored in food is transformed to power life processes in organisms
• Use the idea of energy changing form (not being created or destroyed) to describe what happens during feeding
• Distinguish between useful energy used by cells and energy released as heat

Learning Objectives

• Explain how photosynthesis provides energy and chemical building materials for plant growth
• Describe how plants store chemical energy (such as in starch) and use it later
• Connect stored energy to growth, repair, and reproduction when light is limited+ Show more

Learning Objectives

• Understand the concept of habitat fragmentation and its impact on ecosystems.
• Identify causes and effects of habitat fragmentation.
• Explore methods to mitigate fragmentation effects such as creating corridors and preserving large habitats.+ Show more

Learning Objectives

• Explain how food molecules provide both stored energy and chemical building materials for the body
• Describe how digestion breaks large food molecules into smaller molecules that can be absorbed
• Connect different kinds of food molecules to specific needs in cells (structure, growth, quick energy)+ Show more

Learning Objectives

• Explain how weathering breaks down rocks into sediments.
• Describe how sediments are transported and deposited to rebuild layers over time.
• Connect biological processes to the formation of soil and nutrient cycling.+ Show more

Learning Objectives

• Explain how photosynthesis converts light energy into chemical energy stored in glucose and other molecules.
• Identify the inputs (carbon dioxide and water) and the byproduct (oxygen) of photosynthesis.
• Describe, at a basic level, how the light-dependent reactions form ATP and NADPH and how the Calvin cycle uses them to build sugars.

Learning Objectives

• Identify observable indicators that suggest a new substance formed during a chemical reaction
• Explain how chemical evidence connects to changes in composition at the particle level
• Differentiate chemical changes from physical changes using evidence such as gas, precipitate, color, temperature, and persistence

Learning Objectives

• Explain how conservation of matter is supported by counting atoms in a particle model of a reaction.
• Determine whether an equation or particle diagram is balanced by comparing atom counts on the reactant and product sides.
• Use particle-level reasoning to describe how atoms are rearranged into new combinations during chemical change.

Learning Objectives

• Compare properties of substances before and after an interaction to identify likely physical or chemical changes
• Use evidence (gas release, solid formation, new color, new matter) to support conclusions about whether new substances formed
• Distinguish between changes that can be reversed or separated and changes that produce new materials with different properties

Learning Objectives

• Explain how energy and temperature affect evaporation and transpiration
• Describe how plants add water vapor to the atmosphere through transpiration
• Connect evaporation, transpiration, condensation, and precipitation as linked phase changes

Learning Objectives

• Explain how atoms are the basic units that make up elements and how atoms combine to form substances
• Use a particle model to connect atomic composition to observable properties such as density, melting point, and reactivity
• Differentiate between macroscopic observations and particle-level explanations for matter

Learning Objectives

• Explain how dams and water withdrawals can change the timing and movement of water in watersheds
• Describe how pollutants can affect water quality and harm organisms in rivers and groundwater
• Connect land-cover changes to infiltration, runoff, flood risk, and water availability+ Show more

Learning Objectives

• Explain how groundwater forms and moves through pore spaces in the geosphere
• Describe how infiltration and percolation recharge aquifers
• Connect groundwater discharge to stream baseflow during dry periods+ Show more

Learning Objectives

• Explain atom conservation in chemical reactions using the particle model
• Describe how reactants’ atoms rearrange to form products without being created or destroyed
• Connect particle diagrams to the macroscopic observation of new substances+ Show more

Learning Objectives

• Explain how plant growth depends on matter taken in from the environment
• Identify carbon dioxide, water, and gas exchange as key inputs in the plant system
• Describe how water supports cell growth and chemical processes

Learning Objectives

• Understand the factors that influence changes in population size over time.
• Identify differences between exponential and logistic growth models.
• Explain how density-dependent and density-independent factors affect populations.+ Show more

Learning Objectives

• Understand different types of trophic interactions such as predation, herbivory, parasitism, competition, and mutualism.
• Explain how these interactions influence species survival, community structure, and energy flow.
• Identify examples of trophic interactions in ecosystems and their effects on populations.+ Show more

Learning Objectives

• Identify physical changes and explain how they differ from chemical changes
• Describe how melting, freezing, tearing, and dissolving change matter’s form or state
• Use evidence such as reversibility and recovery of the original substance to classify changes

Learning Objectives

• Explain how new substances can form when atoms rearrange during a chemical reaction
• Describe how macroscopic properties (solubility, conductivity, melting behavior) can change after a reaction
• Use property comparisons before and after a reaction to distinguish chemical changes from physical changes+ Show more

Learning Objectives

• Understand the concept of adaptations and their role in survival.
• Identify different types of structural adaptations in organisms.
• Explain how adaptations provide advantages for resource acquisition, defense, and reproduction.+ Show more

Learning Objectives

• Explain how wind patterns and Earth’s rotation drive ocean currents
• Describe how ocean currents transport heat and moisture and influence regional climates
• Use cause-and-effect reasoning to connect ocean current temperature to coastal weather+ Show more

Learning Objectives

• Explain how particle models describe physical changes versus chemical reactions
• Use the particle model to predict whether atoms are rearranging or only changing arrangement/state
• Connect evidence of new substances to conservation of atoms in chemical reactions

Learning Objectives

• Describe the structure and function of neurons and the nervous system.
• Explain how electrical impulses are transmitted along neurons and communicated at synapses.
• Identify the roles of different parts of the nervous system, including the brain, spinal cord, and nerves.+ Show more

Learning Objectives

• Explain mass conservation in a closed system using the idea of conserved atoms
• Connect particle-level rearrangement of atoms to macroscopic mass measurements
• Use balanced chemical equations to support conservation of mass+ Show more

Learning Objectives

• Understand how power dissipation in resistive components converts electrical energy into heat.
• Analyze effects of internal resistance on voltage and energy transfer in circuits.
• Predict how load interactions influence battery life and device heating.+ Show more

Learning Objectives

• Explain how energy from the Sun and gravity drive Earth system processes.
• Describe how heating affects water state changes, evaporation, and cloud formation.
• Model how gravity influences the movement and accumulation of sediments on slopes.+ Show more