Grade 7 Science Worksheets

Learning Objectives

• Explain how limited resources (food, water, space, and shelter) affect population survival and reproduction.
• Describe relationships between environmental conditions and changes in ecosystem population sizes.
• Use evidence from a text or scenario to identify main ideas and apply resource-availability concepts.

Learning Objectives

• Describe ecological succession as directional community change after disturbance
• Distinguish primary and secondary succession using starting soil conditions
• Explain how soil development shapes later successional stages+ Show more

Learning Objectives

• Explain how evidence from tests and validated models supports evaluation of design solutions.
• Interpret evaluation results by connecting performance to stated criteria and realistic conditions.
• Identify common failure modes and describe how evidence can reveal them.+ Show more

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

• Explain the process of active transport and how it moves molecules against concentration gradients.
• Describe the function of the sodium-potassium pump in maintaining cell electrochemical gradients.
• Identify different types of vesicular transport such as endocytosis and exocytosis.+ Show more

Learning Objectives

• Describe major human-induced alterations to ecosystems and their effects on biodiversity and ecosystem services.
• Identify examples of habitat fragmentation, pollution, and invasive species introductions.
• Explain how human activities lead to long-term community and ecosystem changes.+ Show more

Learning Objectives

• Understand how to critically evaluate scientific explanations and evidence.
• Identify logical fallacies, correlations, and limitations in data and models.
• Distinguish between causation and correlation in explanations.+ Show more

Learning Objectives

• Explain how building orientation affects seasonal thermal performance in Alberta’s climate zones.
• Describe how envelope assembly choices influence thermal bridging and heat loss.
• Use evidence from design strategies (e.g., south-facing glazing and heat-recovery ventilation) to predict impacts on energy demand and comfort.

Learning Objectives

• Identify the biotic and abiotic components of an ecosystem.
• Explain how energy flows through an ecosystem.
• Describe the interactions between living organisms and their environment.+ Show more

Learning Objectives

• Explain the mechanisms driving speciation, including reproductive isolation and geographic separation.
• Describe examples of biodiversity resulting from speciation, such as cichlid radiations and plant polyploidization.
• Analyze how environmental changes influence rates of speciation and biodiversity over ecological and geological timescales.+ Show more

Learning Objectives

• Explain how static and kinetic friction oppose motion and relate to surface contact and normal force.
• Describe aerodynamic drag and how it affects objects moving through air, including speed-related effects.
• Predict qualitatively how changing friction or drag impacts acceleration and stopping distance in real-world situations.

Learning Objectives

• Understand physical and chemical properties that influence reactions.
• Identify patterns that predict whether substances will undergo chemical changes.
• Use property trends to anticipate reaction products and energy changes.+ Show more

Learning Objectives

• Explain how friction opposes relative motion and how that affects net force
• Predict motion outcomes when applied force is less than, equal to, or greater than friction
• Describe how surface texture changes the magnitude of friction

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

• Explain how empirical investigations produce evidence to support scientific claims
• Identify how uncertainty and alternative interpretations are handled in scientific reasoning
• Describe how new data can refine, adjust, or replace scientific models over time

Learning Objectives

• Differentiate between weather and climate using temperature, precipitation, humidity, and wind.
• Explain how averages and variability over years or decades define climate.
• Use evidence from data or scenarios to decide whether an observation is weather or climate.+ Show more

Learning Objectives

• Explain how data tables use consistent units and meaningful labels to organize measurements.
• Use the direction and shape of a graph to interpret trends and relationships.
• Compare groups by reading graphs accurately, including axis labels and scale.

Learning Objectives

• Explain how evolutionary change happens at the population level through heritable variation.
• Differentiate between changes within an individual’s lifetime and changes across generations.
• Identify evidence and mechanisms that can cause shifts in allele frequencies over time.

Learning Objectives

• Distinguish between physical and chemical properties of materials.
• Identify measurable descriptors such as density, melting point, solubility, electrical conductivity, reactivity, and flammability.
• Analyze property data to support material identification and separation strategies.+ Show more

Learning Objectives

• Understand how to interpret results from tests and models to evaluate design solutions.
• Identify criteria and tradeoffs involved in assessing the performance of design options.
• Learn to compare different solutions based on evidence related to their effectiveness and potential failures.+ Show more

Learning Objectives

• Identify separation methods that match a mixture’s physical properties (particle size, solubility, magnetism, or boiling point).
• Explain how filtration, decanting, evaporation, and magnetic separation separate substances without changing their chemical identity.
• Use observable results to infer what physical properties were used in a separation.

Learning Objectives

• Describe various observable indicators of chemical reactions such as gas evolution, precipitate formation, color change, and temperature change.
• Connect observable signs of reactions to underlying mass and energy changes.
• Use simple symbolic formulas to represent reactant–product transformations.+ Show more

Learning Objectives

• Explain how cells become tissues, tissues become organs, and organs work together in multicellular organisms.
• Identify how different tissue types (epithelial, muscle, nervous) support specific body functions.
• Describe how division of labor and cell specialization improve coordinated responses in the body.

Learning Objectives

• Explain how models translate observations into representations that support predictions.
• Differentiate physical, diagrammatic, and computational models and describe how each helps predict outcomes.
• Use model assumptions to justify expected results under new conditions.

Learning Objectives

• Understand different models of atoms and their representations.
• Identify the relationships among subatomic particles, atomic number, and chemical formulas.
• Differentiate between molecular structures and extended network structures in materials.+ Show more

Learning Objectives

• Understand how environmental factors influence physical traits in humans
• Identify examples of traits affected by environment and genetics
• Distinguish between inherited traits and environmentally modulated traits

Learning Objectives

• Explain how mechanical energy transfers between kinetic energy and potential energy in pendulums and springs.
• Distinguish closed systems from open systems when tracking mechanical energy and its losses to nonmechanical forms.
• Use qualitative “energy bookkeeping” to predict how motion outcomes change when energy is transferred to the surroundings.

Learning Objectives

• Use test results or validated models as evidence to judge how well a design meets criteria.
• Interpret evaluation results by considering real-world conditions and possible failure modes.
• Compare competing design options by weighing tradeoffs between different criteria.

Learning Objectives

• Understand the mechanisms of natural selection and how traits are favored or suppressed in populations.
• Identify examples of adaptation and reproductive success in different species.
• Explain the sources of genetic variation and how environmental pressure influences evolution.+ Show more

Learning Objectives

• Organize quantitative and qualitative observations into tables and graphs to show patterns.
• Select appropriate graph types and interpret axis scaling, labels, and trend lines.
• Calculate and compare summary statistics such as mean or median and evaluate outliers.+ Show more

Learning Objectives

• Understand the principles of relative dating such as superposition, original horizontality, and cross-cutting relationships.
• Identify and interpret stratigraphic markers like fossils, unconformities, and intrusions for age correlation.
• Apply stratigraphic principles to construct sequences of Earth’s geological events.+ Show more

Learning Objectives

• Understand the different chemical properties of substances and how they are observed.
• Identify how chemical properties influence reactions such as combustion, corrosion, and neutralization.
• Recognize observable outcomes that indicate chemical properties, such as gas evolution and color change.+ Show more

Learning Objectives

• Explain how inherited differences and reproduction can create variation in traits within a population
• Describe how trait frequency changes across generations when environmental pressures affect survival and reproduction
• Use examples of measurable traits (such as size, coloration, or disease resistance) to interpret patterns in populations

Learning Objectives

• Explain how unequal solar heating drives global atmospheric circulation (Hadley, Ferrel, and polar cells).
• Describe how Earth’s rotation and the Coriolis effect shape prevailing winds and jet streams.
• Connect ocean gyres and major currents (such as the Gulf Stream) to regional temperature and precipitation patterns.

Learning Objectives

• Identify and describe three primary modes of thermal energy transfer: conduction, convection, and radiation
• Explain the molecular/mechanism basis for each mode and typical media (solids, fluids, and space)
• Compare relative rates of heat transfer in everyday contexts and predict how heat moves

Learning Objectives

• Analyze evidence for climate change drivers, including greenhouse gas concentrations, land-use change, and natural variability.
• Explain how climate variables such as temperature and precipitation influence sea level, agriculture, and coastal communities.
• Use data-based reasoning to describe interactions within the climate system, including carbon-cycle exchanges and natural feedbacks.+ Show more

Learning Objectives

• Understand the key factors affecting solubility such as temperature, surface area, pressure, and agitation.
• Identify examples of how solubility varies in natural and practical contexts.
• Analyze how changes in different conditions influence the amount of solute dissolved in a solvent.+ Show more

Learning Objectives

• Identify the main structural components in a load path (slabs/decks, beams, columns, trusses, and foundations).
• Distinguish dead loads and live loads and predict how they transfer through a simple structure.
• Recognize where tension, compression, and shear typically occur in common structural members and at connections.

Learning Objectives

• Explain how beams and cantilevers respond to loads through bending and shear and how these affect deflection and serviceability.
• Describe how axial force and torsion act in structural members like columns and truss bars, and compare dominant internal-force types.
• Relate geometry (span/shape) and support/load placement to internal force distribution in roof trusses and cantilevered balconies.

Learning Objectives

• Explain how truss members form internal force paths of tension and compression
• Use the method of joints concept to reason about forces in individual truss members
• Compare common truss forms (e.g., king post, queen post, and Pratt) by their structural efficiency and redundancy+ Show more

Learning Objectives

• Distinguish homogeneous and heterogeneous mixtures based on observable properties.
• Select an appropriate separation technique (filtration, distillation, chromatography, magnetic separation) by using differences in solubility, particle size, or boiling point.
• Explain how physical separation methods produce distinct fractions without changing chemical identities.

Learning Objectives

• Explain inertia using Newton’s First Law and relate it to everyday motion
• Use Newton’s Second Law qualitatively to predict how net force and mass affect acceleration
• Identify action–reaction force pairs and distinguish them from net force+ Show more

Learning Objectives

• Explain how DNA is organized into chromosomes and how genes influence observable traits.
• Describe how gametes form through chromosome segregation and how fertilization combines genetic material.
• Use molecular examples (like eye pigmentation genes and structural proteins) to connect DNA sequence variation to trait differences.

Learning Objectives

• Understand the importance of foundations in supporting structures
• Identify different types of structural loads such as compression, tension, and shear
• Recognize the roles of supports in ensuring stability of buildings+ Show more

Learning Objectives

• Explain what acceleration means in terms of how velocity changes over time
• Distinguish between positive and negative acceleration using the direction (sign) of velocity change
• Identify constant versus changing acceleration from patterns in velocity over time+ Show more

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 Earth’s orbit and axial tilt affect seasons and the amount of solar energy received
• Describe how changes in day length connect to patterns in the calendar and timekeeping
• Use vocabulary such as axial tilt, hemisphere, and day length to interpret Earth–sun diagrams

Learning Objectives

• Explain how non-native species can harm native ecosystems through competition, altered food webs, and habitat changes.
• Describe common pathways for how invasive species are introduced and why some become established.
• Evaluate how long-term ecological and economic effects increase management needs.+ Show more