Grade 7 Science Worksheets

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 what carrying capacity means in an ecosystem.
• Identify limiting factors that control population size over time.
• Describe how populations change when they exceed or fall below carrying capacity.

Learning Objectives

• Explain the difference between accuracy and uncertainty in scientific measurements
• Identify how tool resolution and repeated trials affect measurement uncertainty
• Use uncertainty ranges to judge whether differences in results are meaningful

Learning Objectives

• Understand the concept of variables in scientific investigations
• Identify independent, dependent, and controlled variables in experiments
• Learn how to plan experiments by controlling variables and measuring key evidence

Learning Objectives

• Identify observable signs of chemical change such as gas formation, color change, temperature change, precipitate formation, and irreversible transformation.
• Understand that multiple indicators together provide stronger evidence of a chemical change than any single sign.
• Recognize how measurements and observations confirm chemical reactions occurring.+ Show more

Learning Objectives

• Understand the different types of plate boundaries and their effects on Earth's surface.
• Identify the geological features associated with divergent, convergent, and transform boundaries.
• Explain how plate movements influence earthquakes, volcanoes, and mountain formation.+ Show more

Learning Objectives

• Explain how human activities can alter Earth system interactions across the atmosphere, biosphere, and geosphere
• Describe positive and negative feedbacks using examples from temperature, water cycle, erosion, and ecosystems
• Use cause-and-effect reasoning to predict how changes in one part of a system can influence other parts

Learning Objectives

• Understand that solution concentration quantifies the amount of solute relative to solvent.
• Identify common measures of concentration such as mass percent and grams per litre.
• Explain how concentration affects physical properties like boiling point and freezing point.+ Show more

Learning Objectives

• Identify the parts of a scientific evidence argument: observation, evidence, claim, and reasoning
• Use data values or graph features to connect evidence to a claim
• Evaluate whether an argument is supported by evidence and scientific principles, not unsupported cause-and-effect+ Show more

Learning Objectives

• Explain how evidence supports a scientific claim using a clear chain from observations to reasoning.
• Identify when an argument uses specific data values, graph features, or direct observations rather than unsupported statements.
• Revise scientific arguments to improve accuracy by addressing limitations and avoiding incorrect cause-and-effect claims.

Learning Objectives

• Describe how ecological models represent relationships among ecosystem components using simplified variables and assumptions
• Distinguish between conceptual and quantitative ecological models and explain how each is used to predict outcomes
• Identify common model inputs and limitations, and explain why model predictions should be checked against real observations

Learning Objectives

• Explain how traditional ecological knowledge (TEK) uses observation, classification, and seasonal patterns to support environmental understanding
• Describe how oral histories and place-based knowledge help people interpret species interactions and habitat indicators
• Compare how Indigenous and scientific knowledge systems can complement each other when studying long-term ecosystem change

Learning Objectives

• Explain how nutrients cycle through ecosystems and why matter is reused.
• Describe the major processes that move carbon, nitrogen, and phosphorus between organisms and the environment.
• Identify how nutrient availability can limit plant productivity.

Learning Objectives

• Understand the concept of filtration as a separation technique.
• Identify different physical properties used to separate mixtures.
• Apply knowledge of filtration to real-world water purification scenarios.+ Show more

Learning Objectives

• Explain saturation and unsaturated states in terms of dissolved solute at a given temperature and pressure.
• Describe what happens when more solute is added to a saturated solution and why crystals may form.
• Interpret supersaturation as a temporary condition that can lead to sudden precipitation.+ Show more

Learning Objectives

• Understand what chemical properties are and how they describe a substance's reactions.
• Identify different chemical properties such as flammability, reactivity with acids or bases, oxidation, and pH behavior.
• Predict reaction outcomes based on observable chemical property evidence.+ Show more

Learning Objectives

• Understand how internal systems support animal survival
• Identify external features that protect and aid animals
• Explain how traits improve resource acquisition and reproduction

Learning Objectives

• Understand various conservation strategies used to protect ecosystems and biodiversity.
• Identify key components such as habitat protection, restoration, and species management.
• Explain how adaptive approaches respond to changing environmental conditions.+ Show more

Learning Objectives

• Understand how microscopic particle motion relates to temperature and thermal energy.
• Explain how particle speed distributions differ with temperature variations in Alberta's air masses.
• Describe the connection between particle motion and macroscopic heat transfer processes.

Learning Objectives

• Differentiate between open and closed systems by identifying whether matter can cross the system boundary
• Use the idea of mass conservation to explain how rearrangement of particles affects mass in a closed system
• Predict and interpret observed mass changes when gases or dissolved substances can enter or leave a system

Learning Objectives

• Understand the concept of conservation of mass in closed systems.
• Explain how different phases and gases influence mass measurements.
• Identify factors affecting the accuracy of mass measurements during transformations.+ Show more

Learning Objectives

• Identify different signs indicating chemical and physical changes based on reading and observation.
• Understand how to differentiate between physical and chemical changes using evidence.
• Describe observable signs such as gas formation, color change, temperature change, precipitate formation, and irreversible transformation.

Learning Objectives

• Define and differentiate physical change from chemical change.
• Identify common examples of physical changes in everyday life.
• Describe the properties that change during physical changes.+ Show more

Learning Objectives

• Describe how melting, freezing, evaporation, and condensation involve changes in particle kinetic and potential energy
• Connect phase changes to energy absorption or release as particles rearrange
• Explain latent heat as energy transferred during a phase change without changing chemical identity+ Show more

Learning Objectives

• Understand the concept of flammability as a chemical property.
• Identify substances that are flammable based on descriptions and examples.
• Learn how chemical properties like reactivity and pH influence material behavior.

Learning Objectives

• Explain how seasonal and annual migrations connect distant habitats
• Identify common drivers of migration such as food availability and breeding needs
• Describe how timing cues and energy demands affect survival during migration+ Show more

Learning Objectives

• Understand the principle of conservation of mass in chemical reactions
• Identify how mass is balanced in reactions
• Predict product masses based on reactant quantities+ Show more

Learning Objectives

• Explain how natural records (ice cores, sediment layers, and tree rings) provide evidence of past climate
• Describe how modern instruments help scientists track recent climate trends
• Identify long-term climate drivers and how they can change Earth’s energy balance and circulation

Learning Objectives

• Explain the different types of phase changes such as melting, freezing, vaporization, and condensation.
• Describe how temperature and pressure influence phase transitions.
• Understand the concept of latent heat during phase changes.+ Show more

Learning Objectives

• Explain why model evaluation compares predictions to evidence.
• Identify how incorrect or missing assumptions can cause a model to disagree with observations.
• Use simulation-style reasoning to test which inputs most affect model outputs.+ Show more

Learning Objectives

• Distinguish between separations and chemical changes by linking outcomes to matter properties
• Explain how density differences can cause settling and layering during physical separation
• Use solubility differences to predict how mixtures can be separated by dissolving selectively

Learning Objectives

• Understand how potential and kinetic energy relate to forces and motion in mechanical systems.
• Identify factors such as elevation, mass, and speed that influence energy transfer and conservation.
• Analyze real-world examples of energy conversion, such as sled descents and conveyor systems.+ Show more

Learning Objectives

• Understand the criteria used to evaluate species' conservation status.
• Interpret evidence related to species population trends, threats, and recovery potential.
• Analyze regional examples of conservation status assessments.+ Show more

Learning Objectives

• Understand and describe various chemical properties of substances.
• Identify observable indicators of chemical reactions.
• Differentiate between physical and chemical changes based on properties.+ Show more

Learning Objectives

• Explain how particle arrangement, spacing, and movement define solids, liquids, and gases
• Describe how temperature and pressure can cause transitions between states of matter
• Use observable properties (shape, volume, flow, compressibility) to identify the state of a substance

Learning Objectives

• Classify matter as a pure substance (element or compound), a mixture, or a solution based on its properties and uniformity.
• Explain how fixed composition and characteristic melting points help identify elements and compounds.
• Describe how mixtures and solutions differ in composition and particle scale (visible vs molecular level).

Learning Objectives

• Explain how conservation of mass applies to closed-system reactions
• Use mass accounting to relate reactant masses to product masses
• Compare theoretical yields with measured yields using input-output mass data+ Show more

Learning Objectives

• Identify the independent variable, dependent variable, and controlled variables in an investigation plan.
• Explain how measurable evidence links to a scientific question.
• Use consistent measurement methods to make fair comparisons across trials.+ Show more

Learning Objectives

• Explain how energy changes in chemical reactions can be detected through temperature changes.
• Differentiate exothermic and endothermic reactions using the idea of bond breaking and bond formation.
• Use energy evidence along with other signs to distinguish chemical change from physical change.

Learning Objectives

• Describe how nutrient runoff, hydrocarbons, and airborne deposition can enter ecosystems.
• Explain how pollutants can affect organism health and alter food web interactions.
• Identify the role of bioaccumulation and biomagnification in aquatic and terrestrial systems.+ Show more

Learning Objectives

• Explain how particle kinetic and potential energy change during melting
• Describe energy absorption during melting using the idea of latent heat
• Distinguish physical phase changes from chemical changes

Learning Objectives

• Explain how model evaluation compares predicted outcomes to evidence.
• Identify assumptions and missing factors that can cause a model to disagree with data.
• Describe how changing input parameters in a simulation can change outputs.+ Show more

Learning Objectives

• Translate distance–time and speed–time data tables into graphs of motion.
• Interpret graph features such as slope (rate) and compare how different curves show different motion.
• Use graphs to estimate average rate and reason about changing speed using familiar scenarios.+ Show more

Learning Objectives

• Understand the processes and components involved in the rock cycle.
• Identify how tectonic activity and surface processes influence rock transformation.
• Explain the roles of uplift, erosion, burial, and melting in shaping Earth's crust.+ Show more

Learning Objectives

• Describe Earth’s lithospheric plates and how they move on the ductile mantle.
• Compare divergent, convergent, and transform plate boundaries and predict associated geologic hazards.
• Use plate-motion ideas to explain large-scale patterns such as mountain chains and earthquake zones.

Learning Objectives

• Explain the different types of symbiosis: mutualism, commensalism, and parasitism.
• Identify Alberta-specific examples of symbiotic relationships.
• Understand ecological impacts of inter-species relationships on populations and habitats.+ Show more

Learning Objectives

• Understand the basic concepts of ecological modeling
• Identify different types of models used in ecology
• Recognize the applications and limitations of ecological models+ Show more

Learning Objectives

• Understand the importance of clear criteria for success in designing solutions.
• Identify measurable and observable goals in a design problem.
• Learn how trade-offs affect meeting different design criteria.+ Show more