Grade 6 Science Worksheets

Learning Objectives

• Explain what makes a scientific question testable by linking it to measurable evidence.
• Identify independent, dependent, and controlled variables in a testable investigation plan.
• Use evidence criteria to rewrite a question so it can be answered with observations and measurements.

Learning Objectives

• Describe key lab safety expectations when using common materials and risks (heat, eye protection, and cleanup).
• Explain how to report results ethically, including accurate measurements, appropriate attribution, and limitations.
• Choose and apply best practices for communicating data clearly using words, tables, and graphs.

Learning Objectives

• Understand the process and types of ecological succession.
• Identify pioneer species and their roles in succession.
• Explain how succession impacts biodiversity and community structure.+ Show more

Learning Objectives

• Explain the difference between raw observations and inferential explanatory claims in scientific reasoning.
• Use evidence and patterns in data to support or question a proposed scientific claim.
• Evaluate the strength of inferences by considering evidence sufficiency and alternative explanations.

Learning Objectives

• Explain how robotic missions to the solar system can be designed using mission types such as flyby, orbiter, lander, and sample-return.
• Describe major engineering constraints (distance, communication delay, and planetary environments) that affect robotic spacecraft design.
• Identify how propulsion, gravity assists, instrumentation, and data return work together to achieve mission goals.+ Show more

Learning Objectives

• Explain how flow speed or wind strength affects what sizes of particles can be transported.
• Describe how decreasing energy leads to sediment sorting and layered deposits.
• Use evidence from grain size patterns to predict where different sediments may settle.

Learning Objectives

• Explain how filtration separates a mixture using a barrier and particle size
• Identify what happens to sand and water in a water–sand filtration setup
• Use evidence (residue thickness and filtrate clarity) to describe separation results

Learning Objectives

• Explain how decomposers break down dead matter and waste to return nutrients to ecosystems.
• Describe the role of fungi and bacteria in releasing chemical components into soil and water.
• Use nutrient cycling ideas to predict how decomposer activity can affect producer growth and ecosystem productivity.

Learning Objectives

• Explain how optical and radio telescopes help scientists observe the solar system from Earth and space
• Describe how spectrometers and different wavelengths reveal composition, motion, and temperature
• Compare ground-based and space-based observation platforms and explain why avoiding Earth’s atmosphere is beneficial+ Show more

Learning Objectives

• Explain the relative roles of the Sun, Earth, and Moon by comparing their masses and dominant gravitational influence
• Describe how the Earth–Moon system’s mutual gravity creates a barycenter and affects their shared motion
• Relate gravitational balance and mutual motion to stable orbits and everyday evidence such as Moon phases and tides

Learning Objectives

• Explain how scientific evidence and uncertainty can be used in risk assessment for policy decisions.
• Use cost-benefit reasoning to compare technology and policy options while considering indirect impacts.
• Describe how stakeholder values can shape what risks and benefits matter most in a decision.

Learning Objectives

• Identify ethical criteria (beneficence, risk minimization, and justice) that guide scientific decisions in society.
• Explain how privacy, informed consent, and responsible data use apply to scientific and medical technologies.
• Evaluate environmental and long-term ecological consequences of scientific applications, including lab practices and production methods.+ Show more

Learning Objectives

• Explain electric current as an organized movement of charges through a conductor
• Distinguish conventional current direction from electron flow in metals
• Describe how potential difference (voltage) drives current in a circuit+ Show more

Learning Objectives

• Explain how free electrons in metals allow charge to flow through a material.
• Describe how temperature and material structure affect conductivity.
• Use comparisons between common conductors (like copper and graphite) to predict which will conduct better for a given purpose.

Learning Objectives

• Explain how a series circuit creates a single path for current
• Describe why the current is the same through all elements in a series circuit
• Relate voltage division to brightness changes in series-connected incandescent bulbs+ Show more

Learning Objectives

• Apply steps of the scientific method to local stewardship issues in a respectful, ethical way
• Explain why consent, cultural sensitivity, and data validation matter when communities contribute observations
• Communicate scientific findings clearly to non-specialist audiences so community stakeholders can make actionable decisions+ Show more

Learning Objectives

• Explain how team roles and shared documentation improve collaborative scientific investigations.
• Describe how trackable versioning and clear attribution support transparency and accountability in group records.
• Use constructive critique protocols to resolve conflicting observations and make negotiated decisions.+ Show more

Learning Objectives

• Identify science-related careers and match them to typical tasks involving data, tools, or lab work.
• Explain how scientific reasoning and mathematical skills support measurement, analysis, and communication in science careers.
• Describe how engineers and technicians maintain equipment and use evidence to interpret results for different audiences.

Learning Objectives

• Define an ecosystem as interacting systems of biotic and abiotic components.
• Identify biotic components (populations and communities) and abiotic physical factors and explain their roles in a habitat.
• Use examples of pond, prairie, and forest ecosystems to describe resource distribution, shelter, and climate influences.+ Show more

Learning Objectives

• Explain the difference between goals, criteria, and constraints in the design process
• Use criteria and constraints to interpret evidence from tests and observations
• Identify examples of constraints from real-world limitations like safety rules, available materials, size requirements, and environmental conditions

Learning Objectives

• Explain how relative dating and stratigraphic relationships help reconstruct the sequence of Earth events.
• Describe how absolute dating (including radiometric dating) estimates the age of rocks and geologic events.
• Use the geologic time scale, fossil succession, and index fossils to interpret past environments and correlate rock layers.

Learning Objectives

• Identify series and parallel sections within a mixed (combined) circuit by using circuit nodes and shared current paths
• Explain how current and voltage distribute in series versus parallel parts of a combined circuit
• Predict changes in brightness and meter readings when a component in series or in parallel fails+ Show more

Learning Objectives

• Explain conservation of mass in a closed system during physical and chemical processes using before-and-after measurements
• Use concrete examples (sealed reactions and closed-container phase changes) to distinguish conservation evidence from mass loss
• Identify why conservation of mass may not hold in open systems where mass exchange occurs

Learning Objectives

• Explain what heritability means for variation in a population
• Distinguish genetic (heritable) influences from environmental influences on traits
• Describe how inheritance and natural selection can change allele frequencies over generations+ Show more

Learning Objectives

• Describe how habitat restoration, protected areas, invasive species removal, and community-based monitoring support biodiversity.
• Explain why assisted migration is considered and why it can be risky or controversial.
• Use species-at-risk and ecosystem-service ideas to prioritize conservation actions.+ Show more

Learning Objectives

• Differentiate structural, behavioural, and physiological adaptations and give examples
• Explain how inherited traits help organisms survive and reproduce in a specific niche
• Distinguish inherited characteristics from acquired characteristics+ Show more

Learning Objectives

• Explain how thermal energy can transfer by conduction, convection, and radiation.
• Connect energy transfer to observable temperature changes and differences in material properties.
• Describe how heat flow can differ in open systems versus closed systems.

Learning Objectives

• Write scientific claims that are supported by evidence and justified with reasoning.
• Interpret and describe trends shown in standardized visual summaries such as graphs and tables.
• Use clear operational definitions and transparent methods, including uncertainties and replication.+ Show more

Learning Objectives

• Describe physical properties and explain how they help identify unknown substances (density, solubility, magnetism, conductivity, hardness, luster).
• Distinguish between qualitative observations and simple quantitative comparisons using measurements and data.
• Use property-based evidence to select materials for familiar tasks and explain why measurements support classification.

Learning Objectives

• Explain the iterative design process (conceptual design, prototyping, measurement, and refinement).
• Use performance specifications and trade-offs involving lift, drag, weight, and stability.
• Describe how scaled models and computational approximations help predict aerodynamic performance.+ Show more

Learning Objectives

• Explain how DNA barcoding helps identify species using short DNA sequences
• Compare genetic sequences and describe how phylogenetic trees show evolutionary relationships
• Contrast morphological keys with genetic markers and describe why cryptic species can be hard to classify+ Show more

Learning Objectives

• Explain how erosion transports rock and sediment using agents like water, wind, ice, and gravity.
• Describe how deposition occurs when transporting agents lose energy.
• Connect erosion and deposition to landforms such as river valleys, deltas, dunes, and coastal beaches.+ Show more

Learning Objectives

• Identify and describe the four aerodynamic forces: lift, drag, thrust, and weight.
• Explain how gravity relates to weight and how propulsion creates thrust.
• Use vector ideas (magnitude and direction) to predict climb, cruise, or descent.+ Show more

Learning Objectives

• Identify when to use a table, bar graph, or line graph to represent different kinds of data.
• Read graphs and tables using correct labels, units, and scales.
• Compare categories and describe change over time using appropriate graph types.

Learning Objectives

• Explain biodiversity patterns using species richness, abundance, and evenness
• Describe how scientists use transects and quadrats to sample organisms
• Interpret simple diversity comparisons and connect them to habitat heterogeneity+ Show more

Learning Objectives

• Explain what keystone species are and why their influence is often greater than their abundance
• Describe at least two mechanisms of keystone effects (habitat engineering and trophic control)
• Predict how changes to keystone species can cause cascading effects on biodiversity and ecosystem function+ Show more

Learning Objectives

• Explain what invasive species are and describe common pathways they use to enter new ecosystems.
• Analyze how invasive species can compete with, prey on, or harm native organisms and alter habitats.
• Identify factors that help invasive species establish, such as propagule pressure and the absence of natural predators.+ Show more

Learning Objectives

• Explain how density connects mass and volume and predict whether objects will float or sink in water.
• Use density evidence to compare substances and interpret why mixtures form layers.
• Estimate or measure density to support claims about which material is present in a mixture.

Learning Objectives

• Explain the hierarchy of body organization from cells to tissues to organs to body systems
• Describe how structure at each level supports specific functions in the body
• Give examples of how changes in one body level can affect overall body system performance and homeostasis

Learning Objectives

• Understand how testable predictions connect evidence and models to observable outcomes.
• Learn the process of making predictions based on scientific explanations and models.
• Recognize how discrepancies between predictions and observations lead to model refinement.+ Show more

Learning Objectives

• Explain how Earth’s rotation causes day and night.
• Describe how Earth’s orbit and tilted axis lead to seasons.
• Identify how the Moon’s orbit produces recurring moon phases.

Learning Objectives

• Explain how matter cycles through living and non-living parts of an ecosystem
• Identify reservoirs and flows in a cycles of matter model
• Describe how carbon and water move between air, soil, water, and organisms

Learning Objectives

• Distinguish weather from climate using correct time scales and examples
• Identify common weather variables (temperature, precipitation, wind, and cloud cover)
• Explain how long-term observations form climate patterns+ Show more

Learning Objectives

• Understand how El Niño influences global weather patterns.
• Identify the atmospheric and oceanic changes associated with El Niño.
• Connect ocean surface temperature variations to climate impacts in different regions.+ Show more

Learning Objectives

• Understand how incoming solar energy varies with angle and location.
• Explain how temperature patterns are influenced by solar energy distribution.
• Describe the processes of energy transfer through the atmosphere and oceans.+ Show more

Learning Objectives

• Understand the concept of phase changes and the energy involved in these processes.
• Explain how latent heat relates to particle movement during phase changes.
• Describe why temperature can plateau during phase transitions despite energy input.+ Show more

Learning Objectives

• Explain how heat transfer changes energy in matter and affects temperature
• Describe how melting, evaporation, and boiling relate to energy and particle motion
• Use evidence from everyday observations to connect energy with changes in state

Learning Objectives

• Understand the concept of inherited adaptations and their role in survival.
• Identify different types of adaptations in various organisms.
• Explain how adaptations match environmental conditions to improve survival.+ Show more