Grade 7 Science Worksheets

Learning Objectives

• Explain how Earth’s rotation and axial tilt create day-night cycles and seasonal changes.
• Model lunar phases using the Moon’s relative position to Earth and the Sun.
• Describe how alignment determines when solar and lunar eclipses occur.+ Show more

Learning Objectives

• Describe the main processes of the water cycle: evaporation, condensation, precipitation, infiltration, runoff, and groundwater flow.
• Explain how solar energy and gravity drive water movement among the atmosphere, hydrosphere, and geosphere.
• Trace how water can travel through river basins, aquifers, springs, and oceans, including seasonal snowpack changes.

Learning Objectives

• Identify major eukaryotic cell organelles and describe their main functions in transport, synthesis, and compartmentalization.
• Use models (2D diagrams and 3D representations) to explain how organelle structure supports cell processes.
• Compare features of plant and animal cells and relate differences to examples such as leaf mesophyll and muscle cells.

Learning Objectives

• Distinguish homogeneous and heterogeneous mixtures and identify examples from daily life
• Classify solutions, colloids, and suspensions based on particle size and visibility
• Explain saturation, concentration, and solubility using solute–solvent interactions+ Show more

Learning Objectives

• Explain how energy can be converted from one form to another in common devices.
• Use energy transfer and conservation ideas to track energy in a conversion sequence.
• Describe why thermal energy losses occur and how efficiency is affected.

Learning Objectives

• Differentiate weather and climate using examples involving temperature, precipitation, humidity, and wind.
• Explain how averages and variability over time help describe climate.
• Use evidence from observations to classify a scenario as weather or climate.

Learning Objectives

• Describe how tensile, compression, and bending tests reveal key material properties used in design.
• Explain how non-destructive testing (ultrasonic testing and hardness measurements) helps evaluate materials without damaging them.
• Relate material variability, anisotropy (especially in timber and composites), and strain localization to safety factors and design codes.

Learning Objectives

• Identify the criteria that make a scientific question testable and measurable
• Form a clear hypothesis and define variables with operational definitions
• Explain how measurement precision, reproducibility, and documentation improve reliability+ Show more

Learning Objectives

• Explain how distance, time, and speed are related and identify appropriate units.
• Calculate average speed using distance and time and interpret results in context.
• Recognize common sources of measurement error and describe how they affect motion data.+ Show more

Learning Objectives

• Explain recoil and thrust using action-reaction (Newton’s third law) forces.
• Compare how interaction forces are equal and opposite while accelerations can differ because of mass.
• Predict motion changes by reasoning about momentum and force pairs during interactions.

Learning Objectives

• Explain how square-cube relationships affect forces, weight, and support when objects scale up or down.
• Describe how surface-to-volume ratio changes heat transfer and resistance with scale.
• Use the idea of Reynolds number to predict how fluid-flow behavior can differ between scale models and full-size systems.

Learning Objectives

• Explain how standardized long-term ecological monitoring helps detect directional change in species and habitats.
• Identify and compare common monitoring methods used in Alberta (fixed-site surveys, point counts, remote sensing, and water quality sampling).
• Describe how sampling design, temporal replication, and data quality improve the reliability of conclusions.

Learning Objectives

• Explain how organisms function as systems with parts that work together to support life processes.
• Describe how internal structures process inputs such as food, oxygen, and water.
• Match body structures to the specific roles they play in digestion, respiration, and circulation.

Learning Objectives

• Explain how phase changes relate to changes in particle kinetic energy and potential energy.
• Describe latent heat as energy transferred during a phase change without changing chemical identity.
• Interpret energy absorption versus energy release for melting, freezing, evaporation, and condensation.

Learning Objectives

• Explain the law of conservation of matter using the idea that mass is not created or destroyed in chemical reactions.
• Use balanced-mass reasoning to predict whether the total mass of reactants equals the total mass of products.
• Identify everyday examples (such as sealed containers) that support conservation of matter.

Learning Objectives

• Explain how thermal conductivity, specific heat capacity, density, and porosity affect heat flow in building materials.
• Compare thermal and moisture-related trade-offs among fiberglass batts, spray foam, wood framing, and masonry.
• Predict how layered assemblies and air/moisture movement can change effective thermal performance.

Learning Objectives

• Explain how seasonal energy storage and release are driven by solar input and Earth’s energy budget.
• Describe how radiative, sensible, and latent heat transfer contribute to environmental changes.
• Connect seasonal thermal processes to freeze-thaw dynamics, snowpack insulation, and lake stratification.

Learning Objectives

• Explain how solubility depends on the nature of the solute and solvent, temperature, and pressure.
• Describe how surface area, particle size, and agitation affect the rate and extent of dissolution.
• Apply solubility factors to real-world situations such as lake salt changes and winter road de-icing.

Learning Objectives

• Explain how physical properties (such as particle size, solubility, magnetism, and boiling point) can be used to separate mixtures.
• Identify appropriate separation methods for different mixtures based on the properties of their components.
• Describe how separation efficiency can be judged by comparing starting materials and end products.

Learning Objectives

• Explain how mitochondria convert energy in cells through cellular respiration to produce ATP.
• Describe the roles of electron transport chains and membrane gradients in ATP synthesis.
• Relate mitochondrial structure (like inner membrane folds) to its function in energy conversion.+ Show more

Learning Objectives

• Explain how specialized cell structures support specific functions in the body
• Compare red blood cells, neurons, and root hair cells using evidence from their morphology
• Use scientific vocabulary (nucleus, axon, diffusion, surface area, transport) to describe cell functions

Learning Objectives

• Identify signs of physical changes using evidence such as phase transitions, shape changes, dissolution, and consistent mass in closed systems.
• Explain how particle rearrangement and energy changes can cause observable changes without changing chemical identity.
• Distinguish physical change indicators from signs that would suggest a chemical change.

Learning Objectives

• Explain how natural selection changes trait frequencies in a population over many generations.
• Describe the difference between heritable traits and traits gained during an individual’s lifetime.
• Use examples (such as antibiotic resistance) to identify variation, selection, survival, and reproduction.

Learning Objectives

• Explain how tectonic uplift, volcanic construction, and surface processes work together to shape landforms
• Compare how uplift rates versus erosion rates affect whether topography rises or is worn down
• Describe how climate influences weathering and sediment transport over geologic time+ Show more

Learning Objectives

• Explain how the nucleus houses genetic material and how it influences cell activities
• Describe the roles of the nuclear envelope and nuclear pores in regulating traffic between nucleus and cytoplasm
• Connect DNA, genes, transcription, translation, and protein synthesis to nucleus function

Learning Objectives

• Identify how competition, predation, and mutualism affect population sizes and community composition
• Explain how resource use overlap can lead to competitive exclusion and how niches allow coexistence
• Use examples to predict likely outcomes for population trajectories under different interaction types

Learning Objectives

• Explain how measurable data can support a scientific claim.
• Distinguish direct observations from interpretations in evidence-based reasoning.
• Use units, scales, and comparable methods to evaluate the reliability of conclusions.

Learning Objectives

• Explain qualitatively how gas pressure changes with applied force and container conditions.
• Describe how gas volume responds when a gas is confined or allowed to expand.
• Relate diffusion and temperature changes to observable gas behavior in everyday situations.+ Show more

Learning Objectives

• Explain what saturation means in a solvent at a specific temperature and pressure
• Describe how supersaturation can lead to crystallization and precipitation
• Identify real-life examples that show solubility limits and phase change behavior

Learning Objectives

• Explain how energy flows through a food chain or food web using the idea of trophic levels.
• Describe why less energy and biomass are available at higher trophic levels.
• Use energy-transfer efficiency to predict how predator populations depend on prey energy.

Learning Objectives

• Explain how groundwater is stored in aquifers and how it moves through Earth’s subsurface.
• Describe recharge and factors that affect how much groundwater is replenished.
• Evaluate how groundwater pumping and contamination can affect water quantity and water quality over time.

Learning Objectives

• Differentiate between biotic and abiotic factors in an ecosystem.
• Explain how abiotic conditions influence which organisms survive and grow.
• Describe how changes in abiotic factors can affect biotic interactions and population sizes.

Learning Objectives

• Explain how engineering standards and codes reduce risk by setting minimum safety requirements for structures and devices.
• Identify examples of safety factors, load ratings, grounding, and personal protective measures used to meet code expectations.
• Describe how documentation and inspection-related records support reliable performance and compliance.

Learning Objectives

• Explain how evidence from tests or validated models supports an engineering design evaluation.
• Interpret test results using performance criteria and realistic operating conditions.
• Identify possible failure modes and tradeoffs between competing criteria in design options.+ Show more

Learning Objectives

• Explain how standardized symbols, labels, and units improve clarity in technical communication.
• Identify key differences between orthographic, isometric, and schematic representations.
• Use conventions for dimensions and tolerances to make a drawing or specification easier to evaluate and replicate.

Learning Objectives

• Explain the difference between invention and innovation using historical examples.
• Trace how needs, materials, empirical evidence, and incremental changes contribute to technological advancement.
• Describe how diffusion and cumulative modification shape technological lineages over time.

Learning Objectives

• Explain how density differences enable separation methods such as decanting, floatation, and centrifugation.
• Describe how buoyant force, sedimentation rate, and centrifugal acceleration affect particle movement in a fluid.
• Predict which density separation method best fits a given mixture and justify the choice using density and particle size ideas.

Learning Objectives

• Explain the conservation of mass law using everyday and particle-level ideas.
• Describe how atoms rearrange during chemical reactions while total mass stays the same.
• Interpret what it means for a reaction to occur in a closed system.

Learning Objectives

• Explain how human activities affect land, water, air, and ecosystems using scientific indicators and data.
• Use examples of monitoring tools (water-quality indicators, remote sensing, air measurements) to infer trends in human impacts.
• Evaluate mitigation strategies and describe trade-offs between economic needs and long-term environmental resilience.

Learning Objectives

• Define net force as the vector sum of all forces acting on an object.
• Explain how unbalanced forces change an object’s motion (speed and/or direction).
• Use quantitative reasoning with proportional relationships between net force, mass, and acceleration.+ Show more

Learning Objectives

• Explain how energy transfer and convection drive movement in Earth’s atmosphere.
• Describe how pressure gradients and prevailing winds relate to large-scale circulation cells.
• Connect fronts, jet streams, and greenhouse gases to weather variability and climate indicators.

Learning Objectives

• Analyze evidence for climate change drivers using temperature and CO2 record ideas
• Explain how land-use change and natural variability can influence climate patterns
• Assess impacts of climate change on sea level, precipitation, and food systems+ Show more

Learning Objectives

• Explain how fulcrum placement and torque affect mechanical advantage in levers.
• Classify levers (first, second, and third class) and identify effort and load positions in real tools.
• Calculate ideal mechanical advantage for lever arm lengths and pulley supporting rope segments.+ Show more

Learning Objectives

• Explain how energy transforms during photosynthesis and cellular respiration
• Describe how chloroplasts and mitochondria help convert energy into usable ATP
• Compare how active and resting tissues use energy differently

Learning Objectives

• Explain how bending, shear, axial force, and torsion affect structural members.
• Relate support conditions and load placement to internal force distribution in beams and cantilevers.
• Describe how bending moment and shear force influence deflection and serviceability.+ Show more

Learning Objectives

• Identify abiotic drivers (temperature, light, soil composition, moisture, and pH) and describe how they vary across space.
• Explain how abiotic gradients create microhabitats and influence where organisms can live.
• Connect abiotic regimes to organism tolerance ranges and species occurrence in communities.

Learning Objectives

• Explain how the law of superposition and original horizontality help determine relative ages of rock layers.
• Use cross-cutting relationships and intrusive contacts to place events in a likely time order.
• Interpret stratigraphic markers such as fossil assemblages and unconformities to correlate layers.

Learning Objectives

• Describe how stratification, oxygen gradients, and light penetration form vertical zones in ponds and lakes.
• Explain how abiotic gradients affect community composition and where species can live within a freshwater system.
• Predict how seasonal thermal turnover changes dissolved oxygen, nutrient mixing, and habitat suitability.+ Show more