Grade 7 Science Worksheets

Learning Objectives

• Understand how to express thermal processes through numerical representations of energy transfer.
• Calculate energy transfer using specific heat, mass, and temperature change in Joules and kilojoules.
• Recognize practical examples of heat transfer, such as heating water, melting snow, and warming air in greenhouses.+ Show more

Learning Objectives

• Define ecosystem resilience and describe how disturbances change ecosystems
• Explain how population changes and community relationships can indicate stability
• Predict how recovery may differ when key species or nutrient cycles are disrupted

Learning Objectives

• Define what a force is
• Explain the difference between balanced and unbalanced forces
• Identify real-life examples of balanced and unbalanced forces+ Show more

Learning Objectives

• Understand the concepts of independent, dependent, and controlled variables.
• Learn how to develop operational definitions for variables.
• Identify sources of confounding and design fair tests to establish causal relationships.+ Show more

Learning Objectives

• Describe production pathways from natural resources to common synthetic materials, including feedstocks, polymerization, and refining steps.
• Identify examples of synthetic materials such as polyethylene, PET, nylon, and metals derived from ores.
• Analyze trade-offs involved in material choices, including durability, recyclability, and environmental impacts.+ Show more

Learning Objectives

• Understand the fundamentals of engineering design processes.
• Identify problem constraints and define clear specifications.
• Learn how to evaluate solutions using trade-off considerations.+ Show more

Learning Objectives

• Explain how energy flows through interconnected feeding relationships in a food web
• Identify producers, consumers, and decomposers and describe their roles in trophic connections
• Predict how adding or removing a species can change dependencies and stability in an ecosystem

Learning Objectives

• Define equilibrium as the state where the net force on an object is zero.
• Differentiate between static and dynamic equilibrium.
• Identify forces such as normal, gravitational, and tension in objects at equilibrium.+ Show more

Learning Objectives

• Explain how Earth’s axial tilt and orbit change the Sun’s apparent height and daylight length over the year.
• Describe how seasonal patterns differ between the Northern and Southern hemispheres.
• Use evidence-based reasoning to connect solar energy distribution to summer and winter temperatures.

Learning Objectives

• Understand the concept of mass conservation in closed systems during chemical changes.
• Identify factors that influence the accuracy of mass measurements and their impact on conservation assessments.
• Recognize the importance of including all phases and accounting for gases or dissolved species when measuring mass.+ Show more

Learning Objectives

• Understand how conservation status is assessed for different species.
• Identify key criteria used in evaluating conservation risk.
• Interpret information about threats, recovery potential, and population trends.+ Show more

Learning Objectives

• Understand the causes of steel corrosion and its effects on structure longevity
• Identify protective measures such as coatings for steel and methods to prevent degradation
• Recognize how environmental factors influence material durability over time+ Show more

Learning Objectives

• Understand the concept of comparing different bridge truss designs systematically.
• Learn to evaluate architectural options based on performance, cost, durability, and manufacturability.
• Use modeling and comparison techniques to analyze structural solutions.+ Show more

Learning Objectives

• Identify the main idea and key details about ecological inquiry.
• Explain what makes an ecological question testable.
• Describe measurable variables and how evidence supports conclusions.

Learning Objectives

• Explain how radiant transfer moves energy using electromagnetic waves
• Identify factors that affect net radiative heating
• Use emissivity and absorptivity ideas to predict heating and cooling patterns

Learning Objectives

• Describe how material properties such as strength, stiffness, density, and durability affect load-bearing design
• Explain how materials behave under compression, tension, and bending and why that matters for long-term performance
• Evaluate material choices for frost and snow resilience in a Canadian prairie climate

Learning Objectives

• Explain how mass and speed affect kinetic energy
• Interpret graphs showing kinetic energy changes with speed
• Interpret graphs showing kinetic energy changes with mass+ Show more

Learning Objectives

• Distinguish quantitative and qualitative observations in scientific scenarios
• Identify key steps in scientific inquiry: observation, question, hypothesis, and evidence through measurement
• Choose appropriate metric units and instruments for measuring length, mass, and volume+ Show more

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

• Analyze societal, economic, and environmental impacts of various technologies.
• Evaluate short-term and long-term consequences of technological developments.
• Understand ethical considerations and policy responses related to technology impacts.

Learning Objectives

• Explain how matter and energy move among the geosphere, hydrosphere, atmosphere, and biosphere.
• Describe how changes in one Earth system can cause changes in another system.
• Use evidence to support claims about Earth system interactions and their effects on landforms, ecosystems, and water availability.

Learning Objectives

• Explain how latitude changes the angle of incoming sunlight and affects temperature patterns
• Describe how elevation and landforms can influence temperature and precipitation
• Connect distance from water and ocean currents to regional climate differences+ Show more

Learning Objectives

• Explain how the rock cycle connects tectonics, magmatism, weathering, erosion, burial, and metamorphism.
• Describe how plate motions create igneous rocks and how surface processes later recycle them into sediments.
• Use cause-and-effect reasoning to trace how rocks change environments over geologic time.+ Show more

Learning Objectives

• Understand the concept of tradeoffs in engineering design.
• Identify how improving one feature may affect others.
• Evaluate the importance of criteria and constraints in design choices.

Learning Objectives

• Identify key information in a data table.
• Describe a simple trend supported by values in the table.
• Use data to justify a pattern and explain uncertainty when data vary.

Learning Objectives

• Understand how water movement in hydroelectric systems converts to electrical energy
• Identify different forms of energy transfer and losses in energy systems
• Interpret energy flow diagrams and Sankey diagrams+ Show more

Learning Objectives

• Describe how problem definitions lead to measurable performance indicators
• Identify criteria and constraints used to guide design decisions
• Compare concepts using feasibility, cost, and environmental factors+ Show more

Learning Objectives

• Define physical properties and explain how they are measured without changing a substance into a new one
• Use measurements such as mass, volume, density, and phase-change temperatures to identify and compare materials
• Relate physical descriptors like electrical conductivity and optical clarity to how substances behave in real applications

Learning Objectives

• Explain how decomposers (fungi and bacteria) break down dead organisms and waste and return nutrients to the ecosystem.
• Describe how decomposition supports plant growth and the continuity of matter in food chains.
• Compare how decomposers affect living and nonliving components of an ecosystem.

Learning Objectives

• Describe the hierarchy of ecological organization from individual organisms to biospheres (organism → population → community → ecosystem → biosphere).
• Identify the roles of producers, consumers, and decomposers and explain how energy moves through trophic levels.
• Explain how structural features at each level can help ecosystems resist change and recover after disturbances.+ Show more

Learning Objectives

• Describe how tensile, compression, and bending tests reveal different material behaviors.
• Explain how non-destructive testing (ultrasonic and hardness) helps detect material variability and defects.
• Identify how anisotropy, strain localization, and safety factors influence design decisions for real structures.

Learning Objectives

• Identify factors that affect the durability of materials in structural applications.
• Understand protective measures such as coatings, cathodic protection, and concrete cover.
• Recognize environmental influences like corrosion, rot, freeze–thaw, and UV degradation.+ Show more

Learning Objectives

• Understand the components of evidence-based arguments, including claims, evidence, and reasoning.
• Evaluate the logical coherence and clarity of constructed arguments.
• Construct and critique arguments using quantitative data, graphical representations, and models.+ Show more

Learning Objectives

• Describe how structural members respond to applied loads through bending, shear, axial force, and torsion
• Connect bending moment and shear force to deflection and serviceability in beams and cantilevers
• Contrast bending-dominated members with axial-dominated members such as columns and truss bars

Learning Objectives

• Explain how data tables use consistent units and meaningful labels to communicate measurements clearly.
• Read and interpret graphs by using axis labels, scale, and category information to identify patterns.
• Compare groups and describe relationships using trends, clusters, and the direction/shape of patterns rather than isolated values.

Learning Objectives

• Explain the main idea of conduction in solids
• Describe how particle motion transfers kinetic energy during conduction
• Use key vocabulary (kinetic energy, particles, conductivity, interface) to answer questions about heat flow+ 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 structure of mitochondria and explain how it relates to their function.
• Explain the process of cellular respiration in mitochondria and how ATP is produced.
• Identify the role of mitochondria in different cell types with high energy demands.+ Show more

Learning Objectives

• Explain how system models trace energy pathways and transformations in mechanical and industrial contexts.
• Use energy accounting to identify inputs, useful outputs, and waste (thermal) losses in a system.
• Interpret energy flow diagrams (including Sankey-style ideas) to calculate and compare conversion efficiencies.

Learning Objectives

• Explain how separation methods use differences in physical properties to separate mixtures
• Identify which separation method best matches a mixture based on properties such as size, solubility, magnetism, and boiling point
• Connect observable outcomes (what remains or what collects) to the underlying classification of the mixture components

Learning Objectives

• Explain how phenotype can result from interactions between inherited genes and environmental conditions.
• Use evidence examples (nutrition, ultraviolet exposure, temperature) to support claims about trait variability.
• Distinguish inherited genetic contributions from environmental modulation when describing observed traits.

Learning Objectives

• Understand different material properties such as strength, stiffness, and density.
• Identify how timber, steel, and concrete behave under various forces.
• Analyze the importance of material choice in construction, especially in cold climates.+ Show more

Learning Objectives

• Analyze historical earthquake data to identify patterns of frequency and magnitude.
• Interpret hazard maps and recurrence intervals to assess earthquake risk.
• Understand how probabilistic forecasting informs hazard mitigation strategies.+ Show more

Learning Objectives

• Describe how electron transfer can form ions
• Distinguish ionic and covalent bonding using electron behavior
• Connect bonding patterns to observable properties

Learning Objectives

• Explain how test results guide specific design revisions using success criteria and evidence.
• Identify examples of design changes that improve performance while respecting constraints (safety, materials, and cost).
• Describe how to justify revisions by linking measurements to the cause of failure and expected improvement.

Learning Objectives

• Explain how structural, physiological, and behavioral adaptations help organisms survive in specific habitats.
• Describe how selective pressures (temperature, moisture, predation, and resource availability) can shape adaptations.
• Use examples to identify adaptive trade-offs and how different habitats can favor different traits.

Learning Objectives

• Understand the principle of conservation of mass in physical and chemical changes.
• Identify observations that demonstrate mass remains constant in sealed systems.
• Explain how atoms are conserved during chemical reactions and phase changes.+ Show more

Learning Objectives

• Explain how energy is transferred through different trophic levels in ecosystems.
• Describe the roles of producers, consumers, and decomposers in energy pyramids and food webs.
• Understand the processes of photosynthesis and cellular respiration as mechanisms for energy capture and release.+ Show more