Grade 7 Worksheets

Learning Objectives

• Describe the function of chloroplasts in plant cells during photosynthesis.
• Explain how pigments in thylakoid membranes absorb light energy.
• Understand the processes of ATP and NADPH synthesis in chloroplasts.+ Show more

Learning Objectives

• Understand the importance of measurement precision and uncertainty in scientific observations.
• Learn how to properly calibrate and select measurement instruments for accurate data collection.
• Develop skills in estimating measurement uncertainty and propagating errors in calculations.+ Show more

Learning Objectives

• Understand the structure and function of mitochondria in energy production.
• Explain the process of cellular respiration and ATP synthesis.
• Describe how mitochondrial activity varies with cellular energy demands.+ Show more

Learning Objectives

• Understand the key components of the scientific inquiry process.
• Distinguish between quantitative and qualitative observations in experiments.
• Select appropriate metric units and instruments for measuring length, mass, and volume.+ Show more

Learning Objectives

• Develop skills to critically analyze explanations, models, and evidence.
• Identify logical fallacies, distinguish correlation from causation, and evaluate data limitations.
• Apply evaluation techniques to real-world scientific scenarios and interpret conflicting information.

Learning Objectives

• Understand how physical properties change with scale in prototypes and models.
• Analyze the concepts of surface-to-volume ratios, square-cube law, and Reynolds number in scaled systems.
• Predict performance differences and limitations of using scaled models in engineering and biology.+ Show more

Learning Objectives

• Understand different types of data representations such as tables and graphs.
• Interpret trends and relationships from graphical data displays.
• Select appropriate graph types for different data sets.+ Show more

Learning Objectives

• Identify the key hydrological, chemical, and biological functions of wetlands.
• Understand how wetlands contribute to ecosystem services like water storage, nutrient cycling, and habitat provision.
• Differentiate among various wetland types such as peatlands and marshes and their specific functions.+ Show more

Learning Objectives

• Understand the importance of safety standards in technological design.
• Identify key safety considerations such as building codes, electrical safety, and safety margins.

Learning Objectives

• Understand the fundamental concepts of thermal energy and temperature.
• Distinguish between internal energy and temperature as measures of particle movement.
• Identify common sources of thermal energy in natural and built environments.+ Show more

Learning Objectives

• Understand the difference between homogeneous and heterogeneous mixtures.
• Describe common physical separation methods such as filtration, distillation, chromatography, and magnetic separation.
• Relate properties like solubility, particle size, and boiling point differences to the choice of separation method.+ Show more

Learning Objectives

• Understand how invasive species spread beyond their native range.
• Identify ecological impacts caused by invasive species on native ecosystems.
• Explain mechanisms of invasion and their effects on food webs and nutrient cycles.+ Show more

Learning Objectives

• Explain the physical and chemical processes that shape Earth's surface
• Identify the forces driving surface changes such as water flow, wind, glaciers, and gravity
• Describe observable landforms associated with surface processes+ Show more

Learning Objectives

• Understand the concept of biodiversity and how it is measured using various indices.
• Interpret the significance of high and low biodiversity values across different habitats.
• Recognize the relationships between habitat heterogeneity, niche diversity, and species turnover.+ Show more

Learning Objectives

• Understand the components and functions of ecosystems, including biotic and abiotic elements.
• Identify trophic categories such as producers, consumers, and decomposers, and explain their roles in energy flow.
• Recognize simple food chains in pond and forest environments and understand how matter cycles through these systems.+ Show more

Learning Objectives

• Describe the structure and stratification of freshwater systems such as ponds and lakes.
• Explain how abiotic factors like oxygen gradients and light penetration influence community composition and vertical zonation.
• Analyze seasonal processes such as thermal turnover and their impacts on dissolved oxygen, nutrient mixing, and habitat suitability.+ Show more

Learning Objectives

• Understand human impacts on ecosystems such as habitat alteration, pollution, resource extraction, and non-native species introduction.
• Explain the consequences of human activities on species composition and ecosystem functions.
• Identify principles of environmental stewardship and explore strategies for balancing societal needs with ecological health.

Learning Objectives

• Understand the ecological consequences of invasive species introductions.
• Recognize pathways and factors facilitating the establishment of invasive species.
• Evaluate the long-term ecological and economic effects of non-native species.+ Show more

Learning Objectives

• Understand basic population growth models, including exponential and logistic growth.
• Identify and distinguish between limiting factors affecting populations.
• Differentiate between density-dependent and density-independent influences on populations.+ Show more

Learning Objectives

• Understand the key principles of ecological restoration, including reference conditions and species selection.
• Analyze different approaches to restoration, such as active versus passive strategies, and their implications.
• Evaluate long-term monitoring, habitat connectivity, and prioritization criteria in restoration projects.+ Show more

Learning Objectives

• Understand how energy moves through trophic levels in ecosystems.
• Explain the concepts of energy efficiency, biomass pyramids, and energy transfer limitations.
• Describe how solar energy is captured by primary producers and lost through respiration and heat.+ Show more

Learning Objectives

• Understand the types of advanced construction materials such as engineered timber, fibre-reinforced polymers, and high-performance concrete.
• Explain how microstructure and manufacturing techniques enhance strength, stiffness, and durability of materials.
• Analyze the trade-offs among cost, fabrication complexity, and performance in using new materials.+ Show more

Learning Objectives

• Understand the steps involved in the design process from defining requirements to evaluating alternatives.
• Learn how to specify performance objectives and constraints for structural designs.
• Apply decision matrices and sketches to compare different design options.+ Show more

Learning Objectives

• Define the primary structural elements involved in load transfer within structures.
• Distinguish between dead loads and live loads and explain how they affect structures.
• Identify the types of stress—tension, compression, shear—in structural members.+ Show more

Learning Objectives

• Understand key material properties such as density, strength, stiffness, ductility, toughness, and thermal expansion.
• Explain how these properties influence the structural performance of different construction materials.
• Compare common materials—wood, steel, and reinforced concrete—in terms of strength-to-weight ratio, deformation, and failure modes.+ Show more

Learning Objectives

• Understand how structural members respond to different types of loads such as bending, shear, axial force, and torsion.
• Relate the geometry and support conditions of members to internal force distribution in structural elements.
• Describe how bending moments and shear forces affect deflection and serviceability in beams and cantilevers.+ Show more

Learning Objectives

• Understand the principles of calibration and sensor response in temperature measurement
• Identify sources of measurement uncertainty and how to interpret data within error bounds
• Compare the performance characteristics of thermocouples, resistance temperature detectors, and infrared sensors+ Show more

Learning Objectives

• Identify the three primary modes of thermal energy transfer: conduction, convection, and radiation.
• Describe the molecular mechanisms underlying each mode of energy transfer.
• Compare the typical media and rates at which conduction, convection, and radiation transfer heat.+ Show more

Learning Objectives

• Understand the relationship between heat, mass, and temperature change using the formula Q=mcΔT
• Identify and explain units such as joules and watts used in heat calculations
• Apply basic heat calculation skills to practical scenarios involving specific heat capacity+ Show more

Learning Objectives

• Understand the properties of reflective and emissive surfaces in heat management.
• Analyze how surface treatments like coatings and colours influence solar radiation absorption and reflection.
• Evaluate the effectiveness of low-emissivity glazing and reflective roofs in different seasonal and diurnal contexts.+ Show more

Learning Objectives

• Understand the definition and significance of chemical properties in materials
• Identify observable indicators of chemical changes such as gas evolution, color change, and precipitate formation
• Differentiate between chemical stability of noble metals and reactive non-metals+ Show more

Learning Objectives

• Understand the principles of chromatographic separation including differential partitioning.
• Identify the roles of stationary and mobile phases in chromatography.
• Describe how molecular polarity affects component separation.+ Show more

Learning Objectives

• Understand the differences between elements and compounds based on atomic composition and bonding.
• Identify examples of elements and compounds and describe their characteristic properties.
• Explain how chemical combinations alter properties compared to the constituent elements.

Learning Objectives

• Understand the process of evaporation and crystallization in recovering solutes.
• Identify the factors affecting crystal growth, size, and purity.
• Describe examples of evaporation crystallization like salt production and sugar crystallization.+ Show more

Learning Objectives

• Understand the principles of filtration and sedimentation in separating mixtures.
• Identify different types of porous media and their roles in filtration processes.
• Explain the applications and limitations of filtration in material processing.+ Show more

Learning Objectives

• Understand the classification of mixtures into solutions, colloids, and suspensions.
• Identify examples of different mixture types based on their properties.
• Describe the factors that distinguish homogeneous and heterogeneous mixtures.+ Show more

Learning Objectives

• Understand the fundamental concepts of solubility and the factors affecting dissolution.
• Identify how temperature, pressure, and solvent polarity influence solubility.
• Interpret solubility curves and understand saturation and supersaturation phenomena.+ Show more

Learning Objectives

• Define and describe key physical properties used to characterize materials.
• Link macroscopic measurements like density, melting point, and electrical conductivity to molecular structure and intermolecular forces.
• Explain how phase-change temperatures and other physical descriptors assist in material classification and selection.

Learning Objectives

• Describe the processes involved in decomposition and nutrient cycling.
• Identify roles of detritivores, fungi, bacteria, and abiotic factors in decomposition.
• Explain carbon and nitrogen transformations during decomposition.+ Show more

Learning Objectives

• Identify different types of adaptations: structural, physiological, and behavioral.
• Understand how environmental pressures influence adaptation traits.
• Relate adaptation traits to specific habitats such as wetlands, forests, and open meadows.+ Show more

Learning Objectives

• Understand the principles of structural optimization in engineering design.
• Identify key factors such as material efficiency, cost reduction, and functional performance.
• Describe the role of topology and form optimization in reducing weight and cost.+ Show more

Learning Objectives

• Understand different prototyping approaches including scaled physical models, digital finite-element models, and laboratory load rigs.
• Compare the advantages and limitations of each prototyping method for assessing strength, stiffness, and failure modes.
• Identify instrumentation techniques such as strain gauges and displacement transducers used to quantify structural responses.+ Show more

Learning Objectives

• Analyze thermal conductivity variations among metals, ceramics, polymers, and composites.
• Explain how free electrons and lattice vibrations contribute to heat conduction differences.
• Assess how density, porosity, and moisture affect the effective thermal conductivity of materials.+ Show more

Learning Objectives

• Understand the mechanisms by which various materials reduce heat transfer in buildings.
• Identify different insulating materials and compare their thermal resistance and practical usage.
• Explain concepts such as thermal bridging, air leakage, and continuous insulation in building design.+ Show more

Learning Objectives

• Explain the principles of density-driven separation techniques such as decanting, floatation, and centrifugation.
• Identify examples of density separation methods like oil-water separation and blood fractionation.
• Understand how buoyant force, sedimentation rate, and centrifugal acceleration relate to particle size and density.+ Show more

Learning Objectives

• Understand the principles of simple distillation and how it separates miscible liquids based on boiling points.
• Explain the concepts of vapor pressure, boiling point differences, and condensation in the distillation process.
• Identify practical applications of distillation, such as ethanol-water separation, and recognize its limitations.+ Show more

Learning Objectives

• Understand the classification of substances into pure substances and mixtures.
• Identify examples of elements, compounds, and mixtures in real-world contexts.
• Recognize the properties that distinguish pure substances from mixtures.+ Show more

Learning Objectives

• Understand the fundamental principles of engineering design, including problem definition, criteria, and constraints.
• Learn how to formulate specifications and evaluate feasible solutions considering materials, costs, and environmental factors.
• Explore the use of trade-off matrices and performance indicators in selecting optimal design concepts.+ Show more