Grade 7 Science Worksheets

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

• 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

• 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 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

• 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

• 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

• 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

• Describe abiotic drivers such as temperature, light, soil, moisture, and pH and their roles in ecosystems.
• Explain how abiotic factors influence resource distribution and organismal tolerance.
• Identify microhabitats and their abiotic characteristics in pond, forest, and meadow environments.+ Show more

Learning Objectives

• Understand the concept of biodiversity indices such as species richness and evenness.
• Interpret diversity values across different habitats and their ecological implications.
• Recognize relationships among habitat heterogeneity, niche diversity, and species turnover.+ Show more

Learning Objectives

• Define components of ecosystems, including biotic and abiotic elements.
• Describe trophic categories such as producers, consumers, and decomposers.
• Explain energy flow from sunlight to organic matter in ecosystems.+ Show more

Learning Objectives

• Describe the structure of freshwater systems, including stratification, oxygen gradients, and light penetration.
• Explain how abiotic gradients influence community composition and vertical zonation in lakes and ponds.
• Discuss seasonal changes such as thermal turnover and their effects on dissolved oxygen, nutrient mixing, and habitat conditions.+ Show more

Learning Objectives

• Understand the ecological and economic consequences of invasive non-native species.
• Identify pathways and factors that facilitate invasive species establishment.
• Analyze long-term impacts such as reduced native biodiversity and altered ecosystems.+ Show more

Learning Objectives

• Understand core principles of ecological restoration and reference conditions.
• Differentiate between active and passive restoration approaches.
• Learn criteria for species selection and long-term landscape monitoring.+ Show more

Learning Objectives

• Understand the different types of adaptations organisms develop for survival in specific environments.
• Identify structural, physiological, and behavioral traits that aid survival.
• Explain how adaptations are influenced by environmental factors like temperature, moisture, and predation.+ Show more

Learning Objectives

• Understand the concept of ecological succession and its stages.
• Differentiate between primary and secondary succession.
• Identify key drivers that influence succession such as soil development and species dispersal.+ Show more

Learning Objectives

• Explain how energy is transferred through trophic levels in an ecosystem.
• Describe the concept of trophic efficiency and biomass pyramids.
• Analyze energy losses during transfer between levels due to respiration and heat.+ Show more

Learning Objectives

• Understand different advanced construction materials and how they are manufactured.
• Explain how microstructure influences strength, stiffness, and durability of materials.
• Analyze the trade-offs related to cost, fabrication complexity, and performance of novel materials.+ Show more

Learning Objectives

• Understand the roles of different types of connections and joints in maintaining structural integrity.
• Identify the effects of shear, bearing, and slip at connection points.
• Analyze how gusset plates and base plates distribute forces in structures.+ Show more

Learning Objectives

• Describe the steps involved in the design process from defining requirements to selecting solutions.
• Explain how performance objectives like load capacity and stiffness guide design decisions.
• Understand the use of decision matrices and sketches to compare alternative designs.+ Show more

Learning Objectives

• Understand the main factors affecting material durability over time.
• Identify different protection measures for materials in structures.
• Analyze how environmental exposure influences material lifespan.+ Show more

Learning Objectives

• Identify common structural failure modes such as buckling, fatigue cracking, and shear fracture.
• Explain the limits states design philosophy, safety factors, and redundancy in engineering.
• Relate failure mechanisms to geometric, material, and loading characteristics using real-world examples.+ Show more

Learning Objectives

• Define primary structural elements involved in load transfer.
• Describe how loads transfer from slabs or decks into supporting members.
• Distinguish between dead loads and live loads in structures.+ Show more

Learning Objectives

• Understand methods for mapping load paths in complex structures.
• Identify primary and secondary load routes transferring loads to foundations.
• Analyze the effects of openings, corners, and irregular geometries on load redistribution.+ Show more

Learning Objectives

• Define key material properties such as density, tensile and compressive strength, stiffness, ductility, toughness, and thermal expansion.
• Explain how these properties influence structural performance and failure modes.
• Contrast materials like wood, steel, and reinforced concrete in terms of strength-to-weight ratio and deformation behaviors.+ Show more

Learning Objectives

• Explain characteristic methods for testing material behaviour including tensile, compression, and bending assessments.
• Describe non-destructive testing techniques such as ultrasonic and hardness measurements.
• Understand anisotropy in timber and composites and how it affects material performance.+ Show more

Learning Objectives

• Describe how structural members respond to applied loads through different types of forces.
• Relate geometry and support conditions to internal force distribution in beams and columns.
• Explain the effects of bending, shear, axial forces, and torsion on member deflection and serviceability.+ Show more

Learning Objectives

• Understand the principles of structural optimization that improve material efficiency and cost-effectiveness.
• Identify different optimization methods such as topology and form optimization.
• Analyze how performance-based criteria and life-cycle assessments influence design choices.+ Show more

Learning Objectives

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

Learning Objectives

• Understand different prototyping techniques including physical models, digital analysis, and laboratory rigs.
• Compare the advantages and limitations of scaled physical models, finite-element digital models, and load rigs.
• Recognize instrumentation tools such as strain gauges and displacement transducers used to measure responses.+ Show more

Learning Objectives

• Understand how walls, roofs, windows, and foundations contribute to thermal performance.
• Identify methods for measuring envelope performance and retrofit strategies.
• Explain the concepts of interfaces, thermal bridging, and air infiltration in building envelopes.+ Show more

Learning Objectives

• Understand the differences in thermal conductivity among metals, ceramics, polymers, and composites.
• Analyze how factors such as free electrons, lattice vibrations, density, porosity, and moisture affect heat transfer.
• Compare qualitative measures used to rank materials for heat dissipation and retention.+ Show more

Learning Objectives

• Understand the principles of convective heat transfer in fluids.
• Identify the factors influencing buoyancy and density variations.
• Explain the formation of circulation cells in air and water environments.+ Show more

Learning Objectives

• Understand the concepts of instrumentation calibration and measurement uncertainty in temperature sensing.
• Identify different types of temperature sensors and their performance characteristics.
• Interpret temperature measurements within stated uncertainties and recognize common error sources.+ Show more

Learning Objectives

• Understand the mechanisms by which materials reduce heat transfer in buildings.
• Identify common insulating materials and compare their thermal resistance.
• Explain concepts of thermal bridging, air leakage, and continuous insulation in energy conservation.+ Show more

Learning Objectives

• Identify and describe the three primary modes of thermal energy transfer: conduction, convection, and radiation.
• Explain the molecular mechanisms underlying each mode of heat transfer.
• Contrast the 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 equation Q = mcΔT.
• Identify units such as joules and watts used for measuring heat energy.
• Apply heat calculation formulas to practical problems involving different substances.+ Show more

Learning Objectives

• Explain the role of reflective and emissive surface properties in managing radiative heat exchange.
• Describe how surface albedo and emissivity affect solar heat gain and loss.
• Identify examples of low-emissivity glazing and reflective roofs and their impact on building energy efficiency.+ Show more

Learning Objectives

• Understand the principles of temperature measurement and instrument characteristics.
• Differentiate between liquid-in-glass, bimetallic, and digital thermometers.
• Explain the significance of calibration, fixed points, and thermal contact for accurate readings.+ Show more

Learning Objectives

• Explain the difference between internal energy and temperature.
• Identify common sources of thermal energy in natural and built environments.
• Describe the direction of heat flow from higher to lower internal energy.+ Show more

Learning Objectives

• Understand how temperature influences material properties such as expansion, contraction, and viscosity.
• Connect microscopic particle motion to macroscopic changes in volume, density, and pressure.
• Identify practical applications and consequences of thermal effects in engineering and environmental systems.+ Show more

Learning Objectives

• Understand the causes and effects of urban heat islands on city environments.
• Identify surface materials and urban features that contribute to heat retention.
• Analyze mitigation strategies to reduce urban heat effects.+ Show more

Learning Objectives

• Describe observable indicators of chemical properties such as gas evolution, color change, and precipitate formation.
• Differentiate between chemical stability of noble metals and reactive non-metals.
• Explain how chemical properties influence material suitability and separation methods.+ Show more

Learning Objectives

• Understand the principles of chromatographic separation, including differential partitioning, stationary and mobile phases, and molecular polarity.
• Identify and differentiate between paper and thin-layer chromatography methods using plant dyes and ink as examples.
• Interpret retention factors and consider resolution in chromatographic separation.+ 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