Grade 7 Science Worksheets

Learning Objectives

• Explain how patterns, variability, and measurement quality affect interpretations of test data.
• Describe what reliability means and how repeated measurements reduce uncertainty.
• Identify common sources of error (tool limits, inconsistent starting conditions, human reading errors) and how they change confidence in conclusions.+ Show more

Learning Objectives

• Define morphological, physiological, and behavioral adaptations and give grade-appropriate examples for each.
• Explain how adaptations improve survival and reproductive success in specific environments.
• Distinguish adaptations from acclimation and identify common adaptive trade-offs.+ Show more

Learning Objectives

• Explain how variation, heritability, and selective pressures can cause adaptive traits to become more common in a population.
• Use examples (pesticide resistance and camouflage) to describe differential survival and reproduction across generations.
• Predict how environmental change can shift which traits are favored and how that affects populations and ecosystems.

Learning Objectives

• Explain the steps of the technological design process and how they support solving a problem.
• Describe iteration and optimization using evidence such as measurements and test results.
• Use criteria, constraints, and documentation to justify design decisions.

Learning Objectives

• Explain how environmental conditions (water, salts, freeze–thaw, and UV) lead to material degradation over time.
• Identify protective measures (coatings, cathodic protection, concrete cover, sealers, and detailing) that improve durability.
• Relate maintenance schedules and inspection intervals to expected lifespan and long-term structural reliability.

Learning Objectives

• Explain how engineered and composite materials (cross-laminated timber, fibre-reinforced polymers, and high-performance concrete) achieve improved strength, stiffness, and durability.
• Describe how manufacturing methods and microstructure influence material performance and long-term reliability.
• Evaluate trade-offs among cost, fabrication complexity, and performance when selecting advanced materials for buildings and bridge retrofits.+ Show more

Learning Objectives

• Describe how loads transfer through structural members using the idea of a load path.
• Differentiate dead loads and live loads and identify common examples of each.
• Recognize where tension, compression, and shear occur in beams, columns, trusses, and connections.+ Show more

Learning Objectives

• Identify and describe conduction, convection, and radiation as three primary modes of thermal energy transfer.
• Explain the molecular mechanisms behind each mode using grade-appropriate particle ideas.
• Compare the typical media and relative rates (slow/fast or fast/slow) for heat transfer in different situations.

Learning Objectives

• Explain how temperature and solvent polarity affect how much solute dissolves in a solvent.
• Use solubility curves and saturation concepts to predict whether a solution will be unsaturated, saturated, or supersaturated.
• Describe how gas solubility changes with pressure and how that relates to everyday situations.+ Show more

Learning Objectives

• Identify hazards and describe how risk assessments evaluate likelihood and severity in laboratory and field settings.
• Interpret safety information (e.g., safety data sheets) to classify hazards and choose safe procedures.
• Apply mitigation strategies using engineering and administrative controls and appropriate PPE.+ Show more

Learning Objectives

• Identify performance metrics, constraints, and trade-offs in real-world design problems
• Use parameter variation and sensitivity analysis to compare how changes affect outcomes
• Apply basic cost-benefit reasoning to evaluate design alternatives under constraints+ Show more

Learning Objectives

• Differentiate weather and climate using examples involving temperature, precipitation, humidity, and wind.
• Explain how averages and variability over time help describe climate.
• Use evidence from observations to classify a scenario as weather or climate.

Learning Objectives

• Identify observable indicators that a chemical reaction has occurred, including gas production, precipitate formation, color change, and temperature change.
• Explain irreversibility and how it differs from reversible physical changes.
• Use mass measurements from sealed systems to connect reaction evidence to the conservation of matter.

Learning Objectives

• Use microscope observations to explain how cells are discrete units in living organisms.
• Compare unicellular and multicellular organization using examples like paramecium and onion epidermis.
• Identify evidence of cell boundaries (plasma membranes, cell walls) and describe how cells form tissues and organs.

Learning Objectives

• Explain how energy can be converted from one form to another in common devices.
• Use energy transfer and conservation ideas to track energy in a conversion sequence.
• Describe why thermal energy losses occur and how efficiency is affected.

Learning Objectives

• Explain how births, deaths, immigration, and emigration change population size
• Use population density and distribution patterns to predict how individuals interact
• Describe how reproductive capacity and survival affect growth rates+ Show more

Learning Objectives

• Explain how physical properties (such as color, density, melting point, boiling point, magnetism, conductivity, and solubility) help describe substances.
• Use observed physical behavior to distinguish between substances or identify likely components of mixtures.
• Apply physical-property reasoning to suggest how mixtures can be separated.

Learning Objectives

• Explain how physical changes and separation methods depend on properties of matter.
• Describe how density differences can be used to predict settling and layering.
• Connect solubility differences to how substances dissolve selectively in a solvent.+ Show more

Learning Objectives

• Explain how net force changes an object’s velocity (speed and/or direction) over time
• Differentiate balanced and unbalanced forces and predict whether an object accelerates
• Describe how friction, air resistance, and gravity affect motion near Earth

Learning Objectives

• Explain how scientific claims are supported by evidence using a clear chain from observations to reasoning.
• Evaluate arguments for consistency between stated quantities and what data actually show.
• Use scientific principles to justify why evidence supports a claim while avoiding unsupported cause-and-effect.

Learning Objectives

• Explain the difference between accuracy and uncertainty when making measurements.
• Describe how tool resolution and repeated trials affect the range (spread) of data.
• Use tables and graphs to represent uncertainty and decide whether two results meaningfully differ.

Learning Objectives

• Explain what ecosystem resilience is and how it relates to recovery after disturbances.
• Describe how disturbances can change habitat, resource timing, and species interactions.
• Use population growth and decline patterns to make predictions about future ecosystem stability.

Learning Objectives

• Explain how changes in temperature, rainfall, light, and habitat structure can alter ecosystem resources and survival rates
• Describe how water quality changes and pollution can affect organism growth and mortality
• Analyze how changes in a key species can shift interactions like predation, competition, and symbiosis+ Show more

Learning Objectives

• Explain how plate tectonics can cause rapid geologic hazards such as earthquakes and volcanoes.
• Describe how weathering, erosion, and deposition reshape Earth’s surface over longer timescales.
• Identify evidence (fault features, lava flows, ash layers, sediment layers) that links past geologic processes to present landforms.

Learning Objectives

• Identify the four Earth system spheres: atmosphere, hydrosphere, geosphere, and biosphere.
• Explain how water and gases move among spheres using cause-and-effect reasoning.
• Describe how human activities can change one sphere and affect other spheres.

Learning Objectives

• Explain how nutrients cycle through air, living things, water, and soil in an ecosystem
• Describe the main roles of photosynthesis, respiration, decomposition, and bacteria in nutrient transformations
• Use nutrient-cycle ideas to predict how limiting nutrients can affect ecosystem productivity

Learning Objectives

• Explain ecological succession as directional change in community composition after disturbance.
• Distinguish primary and secondary succession using examples and key requirements.
• Describe major drivers of succession such as soil development, seed dispersal, competition, and facilitation.+ Show more

Learning Objectives

• Explain how structural, physiological, and behavioral adaptations help organisms survive in specific environments
• Describe how selective pressures such as temperature, moisture, predation, and resource availability can shape adaptations over time
• Identify adaptation trade-offs and predict how traits may vary across habitats such as wetlands, forests, and open meadows

Learning Objectives

• Explain ecological restoration principles, including reference conditions, active vs. passive approaches, and evidence-based goals
• Describe how species selection, genetic considerations, and habitat connectivity influence restoration planning
• Identify trade-offs between short-term recovery and long-term resilience, and connect restoration to monitoring and adaptive management

Learning Objectives

• Identify biotic and abiotic components of an ecosystem and describe their roles
• Explain trophic categories (producers, consumers, decomposers) and how energy flows from sunlight
• Use food chains from pond and forest settings to describe connections, matter cycling, and ecosystem balance

Learning Objectives

• Explain how protons, neutrons, and electrons determine an atom’s properties.
• Use atomic number and mass number to identify elements and describe isotopes.
• Describe how historical atomic models and electron arrangements help explain periodic trends.+ Show more

Learning Objectives

• Explain how bolted, welded, and bearing connections help create continuous load paths in structures
• Describe shear, bearing, and slip at connections and how these behaviors affect structural performance
• Compare how connection stiffness and detailing (gusset plates and base plates) influence capacity and failure modes

Learning Objectives

• Describe how tensile, compression, and bending tests reveal key material properties used in design.
• Explain how non-destructive testing (ultrasonic testing and hardness measurements) helps evaluate materials without damaging them.
• Relate material variability, anisotropy (especially in timber and composites), and strain localization to safety factors and design codes.

Learning Objectives

• Explain how iterative refinement and quantitative comparison are used to improve engineering designs.
• Describe how topology and form optimization can reduce weight and cost while maintaining required strength, stiffness, and durability.
• Use performance-based criteria and safety margins to evaluate whether an optimized design meets code requirements.

Learning Objectives

• Explain how temperature changes cause thermal expansion and contraction in solids and affect volume and density.
• Describe how phase changes (melting/freezing) depend on temperature and how they influence systems.
• Use particle motion to connect microscopic behavior to macroscopic changes such as pressure, volume, and flow.+ Show more

Learning Objectives

• Explain how calibration, traceable reference points, and uncertainty affect temperature measurements.
• Identify common sources of temperature error, including sensor response time, spatial placement, shielding, and thermal contact effects.
• Compare thermocouples, resistance temperature detectors (RTDs), and infrared (IR) sensors for environmental temperature monitoring.

Learning Objectives

• Explain how buoyancy and density differences drive convection in air and water
• Describe how temperature gradients influence circulation cells and heat transport rates
• Connect convective processes to real-world examples such as sea/land breezes, thermals, and lake overturning

Learning Objectives

• Differentiate temperature from internal energy using particle motion and particle interactions.
• Explain that thermal energy transfer occurs from higher internal energy to lower internal energy.
• Use conservation of energy ideas to describe heat exchange between objects.+ Show more

Learning Objectives

• Compare temperature measurement principles and instrument characteristics across liquid-in-glass, bimetallic, and digital thermometers.
• Use the Celsius scale conventions and understand the need for fixed points and calibration for reliable measurements.
• Identify sources of uncertainty and environmental influences (radiation and air flow) that affect recorded temperatures.

Learning Objectives

• Explain how ethical practices like data integrity, proper attribution, and intellectual property protect scientific communities.
• Apply communication conventions for technical reporting, including clear claims about reliability and appropriate graphical annotation.
• Evaluate responsible data sharing and equitable access in STEM projects.

Learning Objectives

• Explain how standard units and instrument choice affect measurement accuracy and precision.
• Read scales correctly and report results using significant figures.
• Differentiate systematic and random error and describe how each affects measurements.+ Show more

Learning Objectives

• Organize categorical and numerical data in clear table formats with accurate units and consistent column headings.
• Use metadata, sampling-frame documentation, and observational logs to preserve provenance and support later validation.
• Apply timestamp conventions and replication records to strengthen credibility in time-series data.

Learning Objectives

• Use Q = mcΔT to calculate thermal energy needed to change a substance’s temperature
• Identify and convert key units (joules and watts) used in heat and power problems
• Explain how heat-transfer rate depends on area, temperature gradient, and time+ Show more

Learning Objectives

• Explain how standardized long-term ecological monitoring helps detect directional change in species and habitats.
• Identify and compare common monitoring methods used in Alberta (fixed-site surveys, point counts, remote sensing, and water quality sampling).
• Describe how sampling design, temporal replication, and data quality improve the reliability of conclusions.

Learning Objectives

• Explain how distance, time, and speed are related and identify appropriate units.
• Calculate average speed using distance and time and interpret results in context.
• Recognize common sources of measurement error and describe how they affect motion data.+ Show more

Learning Objectives

• Use quantitative relationships (mass, temperature change, and specific heat) to calculate heat energy transfers.
• Convert between Joules and kilojoules and interpret the meaning of energy values in thermal processes.
• Use heat-flow ideas and energy budgets to compare simple heating, cooling, melting, and warming scenarios.

Learning Objectives

• Explain recoil and thrust using action-reaction (Newton’s third law) forces.
• Compare how interaction forces are equal and opposite while accelerations can differ because of mass.
• Predict motion changes by reasoning about momentum and force pairs during interactions.

Learning Objectives

• Explain the difference between design criteria and design constraints in a solution design.
• Write clear, testable design criteria using measurable success targets.
• Use constraints (materials, safety, cost, and science principles) to narrow possible solutions.+ Show more