Grade 8 Worksheets

Learning Objectives

• Describe how electricity moves through generation, transmission, and distribution in an electric power grid
• Explain how voltage conversion and grid controls help reduce losses and keep supply and demand balanced
• Use examples from regional generation mixes (e.g., Alberta wind, hydro, and thermal) to discuss reliability and intermittency+ Show more

Learning Objectives

• Explain how systems thinking identifies components, interactions, and boundaries in physical and ecological contexts
• Use box-and-arrow models and conservation statements to track energy or matter flow
• Interpret how perturbations change system outputs and describe emergent properties using evidence

Learning Objectives

• Explain how different pollutants change ecosystem chemistry and disrupt nutrient cycles.
• Describe how excess nutrients can lead to eutrophication, algal blooms, and oxygen loss in aquatic systems.
• Connect contaminant pathways and bioaccumulation to health effects in organisms and food webs.+ Show more

Learning Objectives

• Explain how energy enters ecosystems through primary sources and moves through trophic levels.
• Describe how energy is lost at each transfer and how this limits food-web size and diversity.
• Connect the roles of producers, consumers, decomposers, and detritivores in energy and matter recycling.

Learning Objectives

• Explain how latitude affects the angle of incoming sunlight and why this changes climate.
• Describe how greenhouse gases, ocean currents, and atmospheric circulation influence regional climate.
• Use evidence from radiation and heat-transfer ideas to predict how changes in drivers can shift climate.

Learning Objectives

• Explain how mechanical energy shifts between gravitational potential energy and kinetic energy as an object moves up or down
• Use conservation of mechanical energy to predict how speed changes on a roller coaster track
• Distinguish gravitational potential energy from kinetic energy using height and motion

Learning Objectives

• Explain how human use of land, water, and air can change Earth systems.
• Describe cause-and-effect relationships between resource use and environmental outcomes.
• Use evidence from text to identify impacts of extraction, pollution, and land conversion.

Learning Objectives

• Explain how primary producers convert energy into organic matter and support food webs
• Describe factors that influence primary productivity, including light and soil nutrients
• Compare land producers (grasses, shrubs, boreal trees) and aquatic producers (algae) in Alberta food chains+ Show more

Learning Objectives

• Explain how membrane-bound compartments and cytoplasm support cell functions and homeostasis.
• Describe the roles of the nucleus, mitochondria, and chloroplasts in maintaining cellular activity.
• Compare prokaryotic and eukaryotic cell organization and relate the differences to observable structures.

Learning Objectives

• Explain how to connect evidence to a mechanism when writing an evidence-based claim and reasoning.
• Evaluate explanations by checking whether reasoning supports the data instead of replacing it.
• Compare alternative explanations by stating what current evidence rules out, supports, and would require to discriminate.+ Show more

Learning Objectives

• Identify major types of species interactions (competition, predation, mutualism, commensalism, and parasitism).
• Explain how interactions affect survival, reproduction, and population size in ecosystems.
• Describe how symbiotic relationships can influence ecosystem stability and biodiversity.

Learning Objectives

• Explain how hydrostatic pressure changes with depth using p = ρgh
• Compare pressure at different depths in liquids of different densities
• Interpret how communicating vessels relate to equal pressure at the same level+ Show more

Learning Objectives

• Define homogeneous mixtures and distinguish them from heterogeneous mixtures using particle-level ideas.
• Explain how solubility and concentration affect the uniformity and properties of solutions.
• Use examples of homogeneous mixtures (solutions and alloys) to predict practical outcomes such as taste, conductivity, and environmental impact.

Learning Objectives

• Explain what a closed system is and how it differs from an open system.
• Use conservation of matter to interpret reactants and products in closed-system chemical changes.
• Predict mass or gas changes using measurements from contained experiments.

Learning Objectives

• Describe how scientists use measurements and indicators to monitor ecosystem and water health.
• Identify sampling, remote sensing, and indicator-based methods used to detect human impacts over time.
• Explain how mitigation options are chosen and evaluated using quantitative thresholds and follow-up data.

Learning Objectives

• Trace an energy pathway through coupled mechanical subsystems and identify where energy conversions occur.
• Quantify useful output energy and explain how losses at interfaces reduce net energy transfer.
• Use energy-pathway reasoning to evaluate design implications for reliability and performance.

Learning Objectives

• Identify key federal policies (assimilation, removal, and the Indian Act) and describe their main goals and impacts.
• Explain how these policies affected Indigenous identities, governance, and relationships with settlers.
• Analyze how Indigenous leadership persisted despite government control and restriction.

Learning Objectives

• Explain how watershed boundaries determine where water flows and how drainage basins are organized.
• Describe how land cover, slope, and soil type affect infiltration and overland runoff.
• Identify how storage elements (lakes, wetlands, floodplains) modulate streamflow over time.+ Show more

Learning Objectives

• Explain how solar energy and gravity drive the hydrologic cycle processes.
• Describe evaporation, condensation, precipitation, infiltration, runoff, and groundwater movement.
• Compare the role of major water reservoirs (oceans, glaciers/ice, aquifers) using mass balance ideas and residence time.

Learning Objectives

• Explain how demand management, source protection, riparian buffers, agricultural best management measures, and wetland preservation protect freshwater resources.
• Analyze trade-offs between water supply, ecological integrity, and economic uses at the catchment (watershed) scale.
• Describe how community-scale and household actions influence flow regimes, pollutant loads, and long-term sustainability of freshwater services.

Learning Objectives

• Explain how surface water and groundwater interact, including gaining and losing reaches and baseflow.
• Describe how permeability, hydraulic gradients, and recharge zones influence exchange rates.
• Connect river stage and seasonal variability to changes in spring discharge, hyporheic flow, and water chemistry.+ Show more

Learning Objectives

• Explain how dominant and recessive alleles create predictable patterns of inherited traits across generations.
• Use evidence from family histories and populations to support heredity-based explanations for traits.
• Describe how mutations and similarities among related organisms provide additional evidence for genetic influence on phenotypes.

Learning Objectives

• Explain how biodiversity at genetic, species, and ecosystem levels supports ecosystem function and stability.
• Describe ways to measure biodiversity and evaluate ecosystem services linked to living systems.
• Compare conservation strategies, including habitat connectivity and protected areas, and predict possible trade-offs.+ Show more

Learning Objectives

• Explain the three core ideas of cell theory and how they describe both unicellular and multicellular organisms
• Describe how historical scientists and modern microscopy/imaging supported the development of cell theory
• Use evidence from cell structure and cell reproduction to make claims about how cells function and arise

Learning Objectives

• Explain torque using lever arm and moment of force, and interpret how direction is set by the turning effect.
• Use conditions for rotational equilibrium to determine when the net torque on an object is zero.
• Connect net torque to angular acceleration and apply simple calculations involving rotational inertia and applied torque.+ Show more

Learning Objectives

• Explain how an inclined plane changes the direction of an applied force and relates it to the components of gravitational force.
• Calculate ideal mechanical advantage for ramps using the ratio of slope length to height.
• Describe how friction and surface finish affect the input force needed on real inclined planes and wedges.+ Show more

Learning Objectives

• Classify levers as first-, second-, or third-class based on the positions of fulcrum, input force, and output force.
• Calculate mechanical advantage (MA) of a lever using distances from the fulcrum to the forces.
• Explain how force amplification involves trade-offs in range of motion and practical limitations like friction and deformation.

Learning Objectives

• Explain how natural selection can change a population’s trait distribution over multiple generations
• Describe how variation and heritability make adaptation possible
• Analyze how changing environmental conditions can shift selection pressures and lead to new patterns of adaptation

Learning Objectives

• Explain how multiple organ systems work together to maintain conditions needed for cells to function.
• Describe how circulatory, respiratory, and digestive systems supply or remove materials in coordination.
• Connect nervous and endocrine signaling to body-wide regulation and responses.+ Show more

Learning Objectives

• Apply the law of conservation of mass to open and closed systems by accounting for all matter and possible mass transfer.
• Use quantitative evidence (before/after masses) to explain apparent mass changes without breaking atom conservation.
• Connect balanced chemical equations to mass and mole relationships when comparing measured reactant and product values.

Learning Objectives

• Explain how gear ratios determine angular velocity and direction in simple and compound gear trains
• Calculate overall gear ratio for spur gear interactions and predict speed and torque trade-offs
• Describe how idler gears change direction without changing overall gear ratio+ Show more

Learning Objectives

• Use Ohm’s law and power relationships to calculate voltage, current, and power in simple circuits.
• Apply series/parallel equivalent resistance methods to predict how current and voltage change.
• Analyze mixed circuits using systematic steps and interpret results for real-world wiring contexts.

Learning Objectives

• Use total distance and total time to calculate average speed for a multi-segment trip
• Analyze how different segment speeds and time durations affect overall average speed
• Represent a trip using distance-time segment pairs and use proportional reasoning to compare scenarios

Learning Objectives

• Explain how series and parallel circuits affect overall resistance and current distribution.
• Compare how voltage is shared in series versus parallel arrangements.
• Use circuit rules to predict effects on brightness and functionality in household-style circuits.

Learning Objectives

• Explain how conservation of mass is supported by experimental observations in closed systems.
• Use before-and-after mass measurements and gas-trapping ideas to account for changes without violating conservation.
• Interpret evidence that apparent mass loss usually comes from exchange with the environment rather than mass disappearing.

Learning Objectives

• Explain how separation methods use differences in physical properties such as solubility, boiling point, particle size, and magnetism.
• Match common separation techniques (filtration, evaporation, distillation, and magnetic separation) to the property they rely on.
• Describe how separation methods are used in real-world contexts, including water clarification, oil extraction, and grain cleaning.

Learning Objectives

• Explain how an introduced species can become invasive by establishing, spreading, and outcompeting native species
• Identify ecological traits and conditions that make communities susceptible to invasions
• Describe at least three ecosystem impacts of invasive species, such as effects on biodiversity, nutrient cycling, and habitat structure

Learning Objectives

• Compare particle arrangement and energy in solids, liquids, and gases
• Use state properties to predict how matter behaves in everyday Alberta examples
• Explain how bonding strength and particle mobility affect shape, volume, and flow

Learning Objectives

• Explain how particle motion and particle arrangement relate to solids, liquids, and gases using particle theory.
• Predict observable properties (rigidity, flow, and compressibility) based on particle arrangement and motion.
• Describe how temperature changes can cause state changes and connect these ideas to real-world seasonal examples in Alberta.

Learning Objectives

• Explain why only a fraction of energy passes to the next trophic level
• Use efficiency ranges to predict effects on predator biomass and population size
• Compare how biomass pyramids can differ across grassland, forest, and aquatic ecosystems+ Show more

Learning Objectives

• Differentiate density-dependent and density-independent factors that affect population size
• Explain how resource competition, disease transmission, and social behavior can intensify when populations are crowded
• Predict how weather events and habitat catastrophes can change populations regardless of density+ Show more

Learning Objectives

• Explain how energy transforms between electrical, thermal, radiant, and mechanical forms in common devices
• Use power and efficiency ideas to describe why some energy is transferred more effectively than others
• Identify where energy losses occur in electrical systems, including transmission and resistive heating

Learning Objectives

• Identify and distinguish major forms of energy (kinetic, potential, thermal, and energy carried by light and electricity).
• Explain how energy transfers and transforms in everyday situations.
• Use basic examples to connect energy forms to observable changes in motion, temperature, and energy flow.

Learning Objectives

• Distinguish physical changes from chemical changes using observable clues
• Identify chemical-change indicators such as gas evolution, precipitate formation, persistent color change, and temperature shifts
• Explain how properties like melting point, solubility, and conductivity can change differently in physical vs chemical processes

Learning Objectives

• Explain why scientific knowledge and theories can change when new evidence or improved reasoning becomes available.
• Describe how scientists evaluate competing explanations using the quality and consistency of supporting evidence.
• Use examples to predict how updated evidence could change a theory or refine its predictions.

Learning Objectives

• Explain how human land use and development can change habitat structure and species interactions.
• Describe how resource extraction, agriculture, and wetland drainage can alter nutrient cycles and water systems.
• Analyze how invasive species and cumulative watershed effects can increase ecological risk.+ Show more

Learning Objectives

• Explain the difference between ecological restoration and mitigation and why both aim to re-establish ecological function and connectivity.
• Describe common restoration approaches used in Alberta contexts, including habitat reclamation, riparian buffer creation, soil amendment, and species reintroductions.
• Identify how adaptive management and monitoring metrics are used to track recovery and adjust restoration actions over time.+ Show more

Learning Objectives

• Explain how friction is a contact force that opposes relative motion between surfaces
• Describe how friction depends on surface roughness and the normal force
• Use friction concepts to predict and compare real-world outcomes (braking, sliding, sledding)