Grade 7 Worksheets

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 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 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 relative dating uses rock layers and observable relationships to determine the order of geologic events.
• Use the principles of superposition and cross-cutting relationships to infer which features formed first and which formed last.
• Construct a simple relative geologic history from rock observations when absolute ages are not available.

Learning Objectives

• Explain how gravity and water-driven forces contribute to mass wasting and coastal erosion.
• Describe how heavy rain and slope stability affect the likelihood of landslides.
• Identify how waves and storm surge reshape coastlines over time.

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 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 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 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

• 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 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

• 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 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 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 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 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

• 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 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 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

• 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 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

• Compare how two or more authors present claims and support them with evidence.
• Evaluate how differences in evidence selection and reasoning affect conclusions across sources.
• Synthesize information by identifying overlaps and tracking meaningful disagreements between texts.

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

• Use balanced chemical equations to describe how quantities of reactants relate to quantities of products.
• Calculate and interpret mole ratios to predict relative amounts and mass relationships in chemical transformations.
• Apply conservation of matter to check whether calculated product amounts and reagent needs are reasonable.+ 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

• 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 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

• 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 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

• 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

• Explain how engineering design thinking starts with defining a problem using clear criteria and constraints
• Identify how specifications and measurable performance indicators guide ideation and selection of solutions
• Use trade-off matrices and feasibility criteria to compare conceptual solutions based on materials, cost, and environmental impact+ Show more

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

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 synthesis maps combine multiple datasets and map types to reveal spatial patterns.
• Interpret overlapping evidence to infer likely causes, effects, and interrelationships.
• Evaluate how scale, projection, and classification choices can change conclusions.

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

• 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

• Explain how increased temperature changes particle motion and spacing in solids, liquids, and gases.
• Describe thermal expansion and contraction using the particle model.
• Predict how temperature changes can affect the size of materials and pressure in confined gases.

Learning Objectives

• Explain how internal structures (transport, digestion, coordination) help organisms survive and grow.
• Describe how external features (shells, spines, coloration, beak forms) support protection, feeding, and movement.
• Use functional relationships to connect traits to survival, balance, and successful reproduction.

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 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

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