Grade 7 Science Worksheets

Learning Objectives

• Understand how simple systems and mechanisms transfer motion and force.
• Identify different types of mechanisms like gears, pulleys, and levers.
• Explain how connecting components in a system clarifies energy transfer and performance.+ Show more

Learning Objectives

• Understand the processes of diffusion and osmosis as passive transport mechanisms.
• Identify factors that influence the rate of diffusion and osmosis.
• Explain how diffusion and osmosis affect living cells and organisms.+ Show more

Learning Objectives

• Summarize human impacts on ecosystems, including habitat alteration, pollution, resource extraction, and introduction of non-native species.
• Describe consequences of human activities for species and ecosystem functions.
• Explain principles of stewardship such as mitigation, habitat protection, restoration, and monitoring.+ Show more

Learning Objectives

• Explain the process of decomposition and how nutrients are recycled in ecosystems.
• Identify roles of detritivores, fungi, bacteria, and abiotic factors in decomposition.
• Understand the transformations of carbon and nitrogen during decomposition.+ Show more

Learning Objectives

• Understand how levers and pulleys modify effort and direction to provide mechanical advantage.
• Explain the concepts of torque, fulcrum placement, and ideal mechanical advantage calculations.
• Relate the geometry of levers and pulleys to force multiplication in practical, regional examples.+ Show more

Learning Objectives

• Understand the roles of supports, foundations, and load paths in construction.
• Identify how compression, tension, and shear forces affect structural elements.
• Evaluate material properties like stiffness, strength, and durability for safety.+ Show more

Learning Objectives

• Understand the basic concepts of simple machines and their functions.
• Identify different types of simple machines and their components.
• Explain how simple machines alter force and movement in everyday tools.+ Show more

Learning Objectives

• Understand the signs that indicate a chemical change has occurred.
• Identify different types of evidence such as colour change, gas release, and precipitate formation.
• Explain at the particle level how bonds are broken and formed during chemical changes.+ Show more

Learning Objectives

• Explain the law of conservation of mass and its importance in physical and chemical changes.
• Predict mass relationships in closed systems based on reactants and products.
• Observe and describe experiments demonstrating mass conservation in sealed reactions.+ Show more

Learning Objectives

• Understand what constitutes a physical change and its signs.
• Identify examples of physical changes in real-world contexts.
• Recognize indicators that a change is physical rather than chemical.+ Show more

Learning Objectives

• Understand different quantities used to measure motion such as distance, time, and speed.
• Calculate average speed using distance and time data.
• Recognize common measurement errors and how to minimize them.+ Show more

Learning Objectives

• Understand different separation techniques based on physical properties.
• Identify methods like filtration, decanting, evaporation, and magnetic separation.
• Explain real-world examples of mixture separation in regional contexts.+ Show more

Learning Objectives

• Explain how convection transports heat through fluids and the role of density differences.
• Identify natural and forced convection examples in environmental and engineered systems.
• Characterize boundary layers, buoyancy forces, and flow patterns in convection processes.+ Show more

Learning Objectives

• Understand the intrinsic properties that affect material thermal behavior.
• Compare different construction materials based on thermal conductivity, heat capacity, and density.
• Analyze how porosity, moisture, and layered assemblies influence thermal conductivity.+ Show more

Learning Objectives

• Understand how material properties influence energy transfer in systems.
• Analyze and compare different modes of energy transfer such as conduction, convection, and radiation.
• Apply conservation principles to quantify energy performance in passive and active systems.+ Show more

Learning Objectives

• Identify observable indicators of chemical reactions such as gas production, heat exchange, colour shifts, and precipitate formation.
• Explain how qualitative evidence supports understanding of reaction types and extents.
• Connect observational patterns to reaction pathways and particle interactions.+ Show more

Learning Objectives

• Explain how seasonal thermal cycles influence energy storage and transfer in regional landscapes.
• Identify the key factors driving seasonal climate patterns, including solar input and phase changes.
• Describe how energy fluxes—radiative, latent, and sensible—interact in regional ecosystems.+ Show more

Learning Objectives

• Understand the concept of radiant transfer and how it conveys energy through electromagnetic waves.
• Identify factors like solar radiation intensity, surface absorptivity, and emissivity that influence radiative heating.
• Analyze how seasonal changes and surface types affect radiative balances in different regions.+ Show more

Learning Objectives

• Explain how phase changes involve energy absorption or release without altering chemical identity.
• Describe latent heat phenomena during melting, freezing, evaporation, and condensation.
• Connect microscopic particle interactions to macroscopic energy behaviors during phase changes.+ Show more

Learning Objectives

• Understand how the kinetic motion of particles relates to heat and temperature.
• Distinguish between heat transfer methods: conduction, convection, radiation.
• Explain how environmental examples like snowy mountains and prairie warming illustrate thermal phenomena.+ Show more

Learning Objectives

• Explain how energy pathways operate within mechanical and industrial systems.
• Identify principles of energy conservation in real-world energy systems.
• Analyze Sankey diagrams and energy flow representations to evaluate system efficiencies.+ Show more

Learning Objectives

• Understand how force, material choice, and structural evaluation influence design decisions.
• Analyze criteria-based comparisons of alternative designs in real-world applications.
• Apply quantitative motion data and mechanical calculations to support engineering reasoning.+ Show more

Learning Objectives

• Understand how static and kinetic friction operate in real-world scenarios.
• Explore the effects of aerodynamic drag on moving objects such as vehicles and outdoor equipment.
• Analyze the relationship between surface texture, normal force, and frictional force.+ Show more

Learning Objectives

• Understand how invasive species outcompete native organisms and modify ecosystems.
• Identify mechanisms and ecological impacts of invasive species.
• Analyze how invasions lead to long-term shifts in ecosystem composition and function.+ Show more

Learning Objectives

• Understand the roles of producers and consumers in an energy pyramid.
• Explain how energy transfer between trophic levels is inefficient.
• Identify different types of consumers: primary, secondary, and tertiary.+ Show more

Learning Objectives

• Describe the organization and composition of the cell membrane.
• Explain the functions of lipids, proteins, and carbohydrates in the membrane.
• Understand how the membrane maintains selective permeability and communication.+ Show more

Learning Objectives

• Understand the defining features of populations and their components.
• Identify factors influencing population size and distribution.
• Explain demographic metrics like growth rates and density.+ Show more

Learning Objectives

• Identify the main parts of a cell and their functions.
• Describe the diversity in cell shapes and components based on their roles.
• Understand the structural differences between plant and animal cells.+ Show more

Learning Objectives

• Explain how magma forms through different geological processes such as decompression, heat transfer, and volatile addition.
• Describe the relationship between cooling rates and the texture/mineral composition of igneous rocks.
• Identify the roles of fractional crystallization and magma mixing in producing diverse igneous rocks.+ Show more

Learning Objectives

• Understand the different types of plate boundaries and their effects on Earth's surface.
• Identify the movements of tectonic plates and their role in geological phenomena.
• Recognize how plate interactions cause earthquakes, volcanoes, and mountain formations.+ Show more

Learning Objectives

• Identify and differentiate between igneous, sedimentary, and metamorphic rocks based on origin and features.
• Understand the processes involved in the formation of each rock type.
• Analyze mineral content, grain size, and structures to classify rocks.+ Show more

Learning Objectives

• Identify observable signs of chemical change such as gas formation, color change, temperature change, precipitate formation, and irreversible transformation.
• Understand that multiple indicators together strengthen evidence of a chemical change.
• Describe measurement methods that confirm chemical changes occur.

Learning Objectives

• Understand the different types of weathering processes that break down rocks.
• Identify examples of physical, chemical, and biological weathering.
• Analyze how weathering influences landform development and sediment supply to rivers.+ Show more

Learning Objectives

• Understand the structure and function of mitochondria in energy production.
• Describe the process of cellular respiration and ATP synthesis.
• Identify how mitochondrial variations reflect cellular energy needs.+ Show more

Learning Objectives

• Understand the key chemical properties used to describe substances.
• Identify how substances react under different chemical conditions.
• Analyze observable outcomes to infer chemical behaviors.+ Show more

Learning Objectives

• Understand how observable physical and chemical properties influence material selection.
• Identify properties such as corrosion resistance, hardness, melting point, solubility, and reactivity.
• Learn how properties like density and strength guide structural decisions.+ Show more

Learning Objectives

• Understand how energy changes occur during chemical reactions, including exothermic and endothermic processes.
• Recognize signs of energy transfer in physical and chemical changes.
• Explain the relationship between energy exchange and bond breaking/formation.+ Show more

Learning Objectives

• Explain the principle of conservation of mass in chemical reactions.
• Describe at the particle level how atoms are conserved and rearranged.
• Identify examples of closed systems where mass remains constant before and after reactions.+ Show more

Learning Objectives

• Understand how physical and chemical properties can predict reactions.
• Identify reactivity patterns and evidence of chemical changes.
• Use property trends to anticipate products and energy changes during reactions.+ Show more

Learning Objectives

• Understand the principles of density-driven separation techniques such as decanting, floatation, and centrifugation.
• Identify examples of density separation in real-world applications like oil-water separation and blood fractionation.
• Explain how buoyant force, sedimentation rate, and centrifugal acceleration influence particle separation based on density and size.+ Show more

Learning Objectives

• Understand the difference between elements and compounds based on atomic composition and properties.
• Identify characteristic features such as melting point, conductivity, and fixed ratios of atoms in compounds.
• Explain how chemical bonding and composition affect the properties of substances.+ Show more

Learning Objectives

• Understand the basic principles of filtration and sedimentation as mechanical separation techniques.
• Identify different pore sizes and their applications in filtration processes.
• Describe how flow behaviour affects filtration efficiency and separation quality.+ Show more

Learning Objectives

• Understand the different types of mixtures: solutions, colloids, and suspensions.
• Identify examples of each mixture type based on particle size and behaviour.
• Explain how mixture properties influence separation methods.+ Show more

Learning Objectives

• Define and explain various physical properties such as mass, volume, density, melting and boiling points.
• Understand how physical properties relate to molecular structure and intermolecular forces.
• Identify how physical descriptors are used to classify and select materials for specific applications.+ Show more

Learning Objectives

• Understand different analytical indicators used to assess the purity of a substance.
• Recognize methods such as melting point, boiling point, conductivity, refractive index, and gravimetric residue.
• Evaluate how multiple criteria support robust purity assessments.+ Show more

Learning Objectives

• Understand the principle of simple distillation and its applications in separating liquids.
• Identify factors affecting the efficiency of distillation, such as boiling point differences.
• Explain the limitations of simple distillation with close-boiling mixtures and azeotropes.+ Show more

Learning Objectives

• Explain factors affecting solubility such as temperature, pressure, and solvent polarity.
• Interpret solubility curves and understand saturation and supersaturation concepts.
• Predict outcomes of recrystallization and separation processes based on solubility principles.+ Show more

Learning Objectives

• Understand the classification of pure substances and mixtures based on composition and uniformity.
• Identify examples of elements, compounds, and mixtures in everyday contexts.
• Differentiate between pure substances and mixtures using properties and characteristics.+ Show more