Grade 7 Science Worksheets

Learning Objectives

• Compare thermal conductivity across metals, ceramics, polymers, and composites and explain how structure affects heat transfer.
• Describe how free electrons and lattice vibrations contribute to conduction in different materials.
• Predict how factors like density, porosity, and moisture can change a material’s effective thermal conductivity.+ Show more

Learning Objectives

• Explain how insulation reduces heat transfer by limiting conduction, convection, and radiation.
• Compare insulating materials (fibreglass, foam, and reflective foils) based on their thermal resistance and practical thickness.
• Describe how thermal bridging, air leakage, and continuous insulation affect the total heat loss of building envelopes.+ Show more

Learning Objectives

• Compare elements and compounds based on atomic composition and chemical formulas.
• Explain how bonding and fixed atom ratios affect properties such as conductivity and melting point.
• Use particle-level reasoning to classify substances and predict separation implications.

Learning Objectives

• Identify independent, dependent, and controlled variables in fair test designs
• Use operational definitions to describe how variables are measured in an investigation
• Design fair tests that reduce confounding by using controls, replication, and consistent timing or conditions+ Show more

Learning Objectives

• Explain how adaptation traits (structural, physiological, and behavioural) help organisms survive and reproduce in specific environments.
• Describe examples of adaptation in boreal and prairie habitats, including cold tolerance, drought resistance, seasonal coat changes, and root architecture.
• Connect trait variation to selective pressures and trade-offs in how organisms allocate energy and resources.

Learning Objectives

• Use quantitative models to describe how allele frequencies change over time under selection and drift.
• Interpret probability-based inheritance and translate trait/frequency information into predictions.
• Use Hardy-Weinberg ideas and simple rate calculations to support scientific explanations.

Learning Objectives

• Compare management strategies (protected areas, habitat corridors, restoration, invasive species control, and sustainable harvest) using evidence-based reasoning.
• Explain how biodiversity supports ecosystem services such as pollination, water purification, and food provisioning.
• Evaluate ecological, economic, and social constraints and predict likely outcomes for species persistence.

Learning Objectives

• Explain how vibrating objects create pressure waves in a medium and how those waves move sound.
• Relate frequency to pitch and amplitude to loudness.
• Describe how sound transmission depends on the presence and properties of a medium.

Learning Objectives

• Use data and observations to support scientific claims with direct references to evidence.
• Explain why evidence implies a claim by using appropriate relationships and units.
• Evaluate alternative explanations by stating which evidence supports one explanation more strongly.

Learning Objectives

• Describe how thermal energy moves through conduction, convection, and radiation using real-world examples.
• Connect temperature changes and observable evidence to the type of heat transfer and the idea of heat flow.
• Compare how quickly different heat transfer modes can move energy in everyday situations.

Learning Objectives

• Explain how exponential and logistic growth models describe population changes over time
• Identify limiting factors (food, predation, disease, and abiotic stress) and predict their effects on populations
• Distinguish density-dependent from density-independent influences on population size+ Show more

Learning Objectives

• Explain how energy moves from producers to consumers through trophic levels
• Use quantitative ideas (energy-transfer efficiency percentages) to predict how much energy reaches higher levels
• Interpret biomass pyramids and describe why energy availability limits population sizes+ Show more

Learning Objectives

• Explain how heritable variation and environmental pressures drive natural selection.
• Describe how differential survival and reproduction can shift trait distributions over generations.
• Use real-world examples (antibiotic resistance and island finches) to identify selective pressures and adaptations.

Learning Objectives

• Explain how reproductive isolation and geographic separation can lead to speciation.
• Describe how founder effects, polyploidy, and adaptive radiation increase biodiversity.
• Use biogeographic and time-based patterns to interpret how new species form.

Learning Objectives

• Compare particle, ball-and-stick, and lattice representations of atoms and how they relate to molecular vs extended structures.
• Explain how subatomic particles and atomic number connect to atomic notation and bonding patterns.
• Predict how bonding patterns (covalent vs ionic/extended networks) influence properties such as melting point and electrical behavior.

Learning Objectives

• Explain how energy moves through trophic levels in a food chain, including the roles of producers, consumers, and decomposers
• Describe photosynthesis and cellular respiration as mechanisms for capturing and releasing energy
• Model an energy budget using energy-pyramid ideas and typical transfer efficiencies

Learning Objectives

• Explain how predation, competition, parasitism, mutualism, and commensalism affect populations in both terrestrial and aquatic ecosystems.
• Use food webs and interaction networks to trace direct and indirect (cascading) effects between species.
• Make evidence-based claims about interaction strength using examples such as predator-prey cycles and invasive species.

Learning Objectives

• Distinguish exponential growth from logistic growth using the ideas of limiting factors and carrying capacity.
• Explain how density-dependent and density-independent factors can affect population size over time.
• Interpret population growth and carrying-capacity graphs and connect patterns to real environmental causes.

Learning Objectives

• Explain what species richness and evenness mean and how they contribute to biodiversity
• Interpret common biodiversity index values when comparing habitats
• Describe how habitat heterogeneity and niche diversity can affect species turnover+ Show more

Learning Objectives

• Explain how bolted, welded, and bearing connections help create continuous load paths in structures.
• Describe how shear, bearing, and slip can affect connection performance and structural capacity.
• Use truss-node and column-to-footing examples to predict how connection stiffness and detailing influence failure modes.

Learning Objectives

• Explain how advanced construction materials such as engineered timber, fibre-reinforced polymers, high-performance concrete, and composite systems can increase strength, stiffness, and durability
• Describe how manufacturing processes and microstructure features affect material performance
• Evaluate trade-offs among cost, fabrication complexity, and performance when selecting materials for buildings and bridge retrofits+ Show more

Learning Objectives

• Describe how engineers map primary and secondary load paths in buildings and bridges to transfer gravity, lateral, and dynamic forces safely to foundations.
• Explain how openings, re-entrant corners, and irregular geometry can redistribute loads and change stiffness and internal force locations.
• Justify the importance of redundancy and alternative load paths to reduce the risk of collapse.

Learning Objectives

• Compare embryonic development stages across different animal groups and identify conserved features.
• Explain how shared embryonic structures and developmental timing can support evolutionary relationships.
• Use examples such as pharyngeal pouches and limb buds to interpret evidence for common developmental pathways.

Learning Objectives

• Explain how density differences allow mixtures to be separated using decanting, flotation, and centrifugation.
• Describe how buoyant force, sedimentation rate, and centrifugal acceleration relate to particle size and density contrast.
• Choose an appropriate density-separation method by comparing what each method uses (gravity, buoyancy, or acceleration).

Learning Objectives

• Understand what density is and how it relates to material properties.
• Compare the density of different materials using observations and data.
• Learn how density helps identify and classify materials in everyday life.

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Understand the production pathways from natural resources to synthetic materials
• Identify common synthetic materials like polyethylene, PET, and nylon
• Describe processes such as polymerization and refining+ Show more

Learning Objectives

• Understand the basic structure of plant and animal cells
• Identify parts of a cell under a microscope
• Differentiate between unicellular and multicellular organisms+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Understand different ways to represent matter interactions
• Interpret symbolic chemical equations
• Read and analyze graphs of mass or temperature versus time+ Show more

Learning Objectives

• Identify the signs indicating a chemical reaction has occurred
• Understand examples of chemical indicators such as gas production and precipitate formation
• Explain how energy changes and mass measurements relate to chemical reactions+ Show more

Learning Objectives

• Define and distinguish between homogeneous and heterogeneous mixtures.
• Identify examples of different types of mixtures, including solutions, suspensions, and colloids.
• Understand concepts of solubility, saturation, and concentration in mixtures.+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Understand the concept of population growth and carrying capacity.
• Analyze graphical data representing population changes over time.
• Identify factors that influence population size, such as resources and competition.+ Show more

Learning Objectives

• Understand different types of species interactions: predation, competition, parasitism, mutualism, and commensalism.
• Identify predator-prey relationships in forest ecosystems.
• Analyze how species interactions affect community structure and resource distribution.+ Show more

Learning Objectives

• Understand how carbon atoms move through organisms and the environment
• Describe the processes of digestion, biosynthesis, and respiration that involve matter transformation
• Explain how matter is conserved and recycled within ecosystems+ Show more

Learning Objectives

• Understand the process of photosynthesis
• Identify the role of light energy in chemical energy production
• Learn how plants convert sunlight into food+ Show more

Learning Objectives

• Understand the causes of deforestation and its impact on ecosystems.
• Identify human activities that contribute to environmental degradation.
• Analyze the consequences of deforestation for biodiversity and climate.+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Understand how wildfires influence plant and animal populations in forests.
• Identify different biological and physical disturbances and their impacts on ecosystems.
• Interpret data related to ecosystem recovery after disturbances.+ Show more

Learning Objectives

• Identify key stages of embryonic development across different animal groups
• Compare and contrast embryonic features among taxa to understand evolutionary relationships
• Recognize conserved structures such as pharyngeal pouches and limb buds+ Show more

Learning Objectives

• Understand the basic concepts of natural selection
• Recognize how traits influence survival and reproduction
• Identify examples of adaptation in different species+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Understand the key mechanisms that lead to the formation of new species.
• Identify examples of reproductive isolation and geographic separation.
• Explain how polyploidy and adaptive radiation contribute to biodiversity.+ Show more

Learning Objectives

• Explain how evolutionary change happens at the population level over many generations
• Distinguish between traits inherited by offspring and changes that occur in individuals during their lifetimes
• Describe how variation and heritability provide the raw material for evolution+ Show more

Learning Objectives

• Explain how igneous, sedimentary, and metamorphic rocks form in the rock cycle.
• Describe the roles of heat, pressure, weathering, and mineral cementation in rock transformations.
• Use rock-cycle ideas to make connections between surface and subsurface Earth processes.