Grade 7 Science Worksheets

Learning Objectives

• Identify and describe major types of biotic interactions (predation, competition, mutualism, commensalism, parasitism).
• Explain how changes to one species can affect other species and community structure.
• Use evidence from scenarios to determine the type and direction of benefit or harm in an interaction.

Learning Objectives

• Explain how the conservation of mass is tested using mass measurements of reactants and products in a closed system.
• Use careful measurement and correct system boundaries to account for gases and dissolved substances.
• Describe how precision and control of experimental conditions affect observed mass changes.

Learning Objectives

• Classify chemical reactions as synthesis, decomposition, single displacement, double displacement, acid–base neutralization, or combustion
• Use particle-level reasoning to explain how atoms are conserved during reaction type changes
• Predict the general product type for common reaction patterns using balanced chemical ideas

Learning Objectives

• Explain how magma is generated through decompression, volatile addition, and heat transfer
• Describe how cooling rate influences igneous texture and the difference between intrusive and extrusive rocks
• Compare how fractional crystallization and magma mixing change magma composition+ Show more

Learning Objectives

• Explain how disturbances such as fire, flood, landslides, and windthrow change habitats and affect populations.
• Describe how frequency, intensity, and spatial scale influence whether disturbances increase diversity or cause declines.
• Identify examples of species responses to disturbance regimes, including rapid rebound and local extirpation.+ Show more

Learning Objectives

• Identify biotic and abiotic components of an ecosystem and explain how they interact
• Describe how energy enters an ecosystem through primary producers and moves through food relationships
• Use ecosystem vocabulary (e.g., producer, consumer, decomposer, sunlight, water, soil) to explain ecosystem structure and function

Learning Objectives

• Explain how diffusion and osmosis are passive transport processes driven by concentration differences.
• Describe how a semipermeable membrane affects the movement of water in osmosis.
• Predict how environmental factors (temperature, surface area, concentration gradient) can change the rate of diffusion and osmosis.+ Show more

Learning Objectives

• Explain how habitat fragmentation divides ecosystems into isolated patches and how this affects species interactions and populations.
• Describe edge effects and their impacts on microclimate, predation risk, and invasive species.
• Evaluate how connectivity (corridors and gene flow) can reduce extinction risk and support ecosystem resilience.

Learning Objectives

• Explain how abiotic factors (temperature, moisture, light, soil nutrients, and pH) affect where organisms can live.
• Describe how daily and seasonal abiotic changes can influence survival and population growth.
• Use the ideas of tolerance, carrying capacity, and resilience to predict how populations respond to extreme events.

Learning Objectives

• Explain how decomposers (fungi and bacteria) break down dead organisms and waste matter in an ecosystem
• Describe how decomposition returns atoms and nutrients to the soil and water for producers to reuse
• Connect decomposition to the cycling of matter and the continued growth of plants and other consumers+ Show more

Learning Objectives

• Identify observable indicators of chemical change in real-world examples.
• Explain why multiple indicators together strengthen evidence of chemical change.
• Use measurements and observations to support claims about whether a chemical change occurred.

Learning Objectives

• Describe how water moves through the atmosphere, land, and oceans during the water cycle.
• Explain how energy from the Sun and the role of cooling and gravity drive major water-cycle processes.
• Compare pathways such as evaporation, condensation, precipitation, runoff, and infiltration/groundwater storage.+ Show more

Learning Objectives

• Explain how deposition occurs when transport energy decreases and sediments accumulate to form landforms such as deltas, alluvial fans, and floodplains
• Describe how depositional processes create evidence in rock records, including layered strata, cross-bedding, and graded beds
• Compare deposition by glaciers and wind by identifying moraines, drumlins, and dunes

Learning Objectives

• Explain how joints and connections maintain continuous load paths in structures.
• Compare bolted, welded, and bearing connections based on how they transfer forces.
• Describe shear, bearing, and slip at connections and why redundancy matters.+ Show more

Learning Objectives

• Explain the idea of reference conditions and why they guide ecological restoration goals.
• Differentiate active and passive restoration approaches and describe how each can support recovery.
• Identify key factors in restoration planning, including species selection, genetic considerations, and habitat connectivity.+ Show more

Learning Objectives

• Identify performance metrics, constraints, and trade-offs in an engineering design problem.
• Use parameter variation and sensitivity reasoning to improve a design within real-world limits.
• Evaluate options using basic cost–benefit reasoning and staged refinement.

Learning Objectives

• Explain how the nucleus stores DNA and controls key cell processes
• Describe the roles of chromosomes, transcription, translation, and nuclear pores
• Connect nuclear function to cell division, differentiation, and responses to signals

Learning Objectives

• Explain how topology and form optimization can reduce material use while meeting structural performance requirements.
• Use performance-based criteria (strength, stiffness, and durability) to compare multiple design options quantitatively.
• Describe how life-cycle assessment and constructability constraints affect feasible optimized designs.+ Show more

Learning Objectives

• Use Q = mcΔT to calculate the heat energy needed to change a substance’s temperature
• Connect heat energy (joules) and heating rate (watts/power) to real-world heating and cooling situations
• Explain how mass, specific heat capacity, temperature change, and heat-transfer factors affect thermal energy and rate

Learning Objectives

• Identify the four main tissue types (epithelial, connective, muscle, and nervous) and their primary functions
• Explain how the organization of tissues in organs affects transport, protection, movement, and communication
• Use evidence from scientific statements to distinguish correct from incorrect information about tissue functions

Learning Objectives

• Explain recoil and thrust using Newton’s third law (action–reaction forces).
• Compare how equal and opposite interaction forces can produce different accelerations because of different masses.
• Use ideas about momentum change to describe motion during interactions such as rockets, skateboarders, and skaters.

Learning Objectives

• Explain how density differences and buoyancy drive convective heat transfer in fluids.
• Describe how convection produces circulation cells in air and water and identify real-world examples.
• Compare convection at different scales, from small boundary layers to large atmospheric circulation.+ Show more

Learning Objectives

• Explain how engineers map primary and secondary load paths to identify where gravity, lateral, and dynamic forces travel through a structural system.
• Describe how openings, re-entrant corners, and irregular geometry can redistribute forces and change load routes.
• Use the concepts of redundancy and alternative load paths to predict how structures can better prevent progressive collapse.

Learning Objectives

• Explain how temperature is measured using different instruments (liquid-in-glass, bimetallic, and digital) and identify their appropriate ranges.
• Describe the Celsius scale, including fixed points and why calibration improves measurement reliability.
• Distinguish systematic and random uncertainties and predict how environmental factors (radiation and air flow) affect temperature readings.

Learning Objectives

• Explain how exothermic and endothermic chemical reactions change temperature through energy transfer
• Describe how bond breaking requires energy and how bond formation releases energy
• Use energy evidence, along with other signs, to distinguish chemical change from physical change

Learning Objectives

• Explain how physical measurements (melting point, boiling point, conductivity, refractive index, and gravimetric residue) can indicate purity.
• Use multiple pieces of evidence to evaluate whether a substance is pure or contaminated.
• Compare the strengths and limitations of different purity-testing techniques and justify an overall conclusion.

Learning Objectives

• Explain how beam bending, shear, and deflection occur under different loads and support conditions
• Use span-to-depth ratio and material stiffness concepts to predict beam performance under service loads
• Identify how real-world examples (e.g., overpass girders and floor joists) relate to beam stability and comfort requirements

Learning Objectives

• Explain how weather data (temperature, wind, humidity, precipitation) can be compared across time and location to identify patterns.
• Distinguish weather from climate and describe how climate over time is influenced by multiple Earth systems.
• Use reading and data-based reasoning to select main ideas, judge statements as true/false, and respond to written prompts.

Learning Objectives

• Identify which steps in bitumen extraction are physical separations versus chemical treatments.
• Explain how density, particle size, temperature, and additives affect mixtures such as oil sands slurries and emulsions.
• Use classification ideas to describe how processing choices change the products made from bitumen-containing mixtures.

Learning Objectives

• Explain how ecological inquiry uses observations and measurable variables to evaluate hypotheses.
• Identify how evidence supports conclusions while accounting for natural variability.
• Interpret ecological relationships and human impacts using data from a local context.

Learning Objectives

• Explain how disturbances affect ecosystem structure and community relationships
• Describe how populations change during recovery and long-term shifts after disturbances
• Use evidence from population growth and decline to predict effects on ecosystem stability

Learning Objectives

• Explain how solubility depends on the nature of solute and solvent, temperature, pressure (for gases), and surface area
• Describe how agitation and particle size affect the rate and extent of dissolution
• Use examples from everyday life to predict how changes in conditions affect dissolved materials

Learning Objectives

• Explain how changes in temperature, rainfall, light, and habitat structure affect ecosystems and species survival.
• Describe how water quality and pollution can influence growth, reproduction, and mortality in organisms.
• Analyze how changes in one species can shift predator-prey, competition, and symbiotic relationships.

Learning Objectives

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

Learning Objectives

• Explain how free-body diagrams (FBDs) represent forces acting on an object
• Determine net force magnitude and direction by combining perpendicular force components
• Decompose forces on inclined surfaces into perpendicular (normal) and parallel (friction/gravity) components+ Show more

Learning Objectives

• Identify ecological organization levels from individual organisms to ecosystems
• Explain how properties at higher levels emerge from interactions among organisms and their environment
• Use examples from Alberta (trout, fish communities, Bow River ecosystem) to compare levels

Learning Objectives

• Explain how environmental and human health effects can become part of science-based constraints in design.
• Identify ways materials and processes can impact air, water, soil, and local communities.
• Distinguish solutions that are technically feasible from solutions that are socially and environmentally responsible.

Learning Objectives

• Identify major sources of anthropogenic pollution relevant to Alberta (nutrient runoff, hydrocarbons, and airborne deposition).
• Explain how pollutants move through ecosystems (runoff, atmospheric deposition, and food-web transfer).
• Describe how pollution can change organism health and ecosystem chemistry, including risks from bioaccumulation.+ Show more

Learning Objectives

• Explain how internal transport systems move nutrients from where they are obtained to body tissues that use them.
• Describe the roles of digestion, circulation, and cellular use of nutrients in maintaining organism function.
• Identify how organisms remove unusable materials as waste during transport.

Learning Objectives

• Identify observable signs indicating a chemical reaction has occurred.
• Explain the significance of mass conservation in chemical reactions.
• Differentiate between physical and chemical changes based on evidence and energy considerations.+ Show more

Learning Objectives

• Analyze how population growth affects demand for water, energy, land, and resources.
• Evaluate environmental consequences of increased consumption and urbanization.
• Compare regional examples of resource use and environmental pressures.+ Show more

Learning Objectives

• Analyze patterns in the fossil record to understand evolutionary relationships.
• Identify key concepts such as stratigraphy, index fossils, and transitional forms.
• Interpret data from fossil assemblages and understand their significance in macroevolution.+ Show more

Learning Objectives

• Identify different types of natural hazards and their characteristics.
• Interpret historical and instrumental data to analyze hazard patterns.
• Understand the concepts of recurrence intervals and hazard maps.+ Show more

Learning Objectives

• Describe how light energy is converted into chemical energy during photosynthesis.
• Explain how organisms harvest energy from food through cellular respiration.
• Connect the processes of photosynthesis and respiration across different taxa.+ Show more

Learning Objectives

• Explain how heritable variation and environmental pressures can change trait frequencies over generations.
• Describe how differential survival and reproduction lead to adaptation.
• Use examples (e.g., island finches, antibiotic resistance) to identify selective pressures and advantageous traits.

Learning Objectives

• Explain how technologies can provide benefits and create costs or risks to people and the environment
• Identify ethical issues in technology, including fairness in access, privacy, and responsibility for hazards across a product life cycle
• Use evidence to connect engineering choices to real-world consequences for communities and ecosystems

Learning Objectives

• Explain how thermal resistance (R-value) affects heat flow between indoor and outdoor environments.
• Identify how material thickness and construction details influence insulation effectiveness and comfort.
• Analyze how thermal bridges and design choices impact energy efficiency and lifecycle energy use.

Learning Objectives

• Classify matter as a pure substance, mixture, or solution based on particle uniformity and measurable properties
• Compare pure substances, mixtures, and solutions using examples and separation/dissolving ideas
• Explain how classification helps predict observable behavior in everyday and regional contexts