Grade 8 Worksheets

Learning Objectives

• Explain how thermal energy transfers through conduction, convection, and radiation
• Use everyday examples to connect heat movement to temperature changes
• Identify which thermal transfer mode best fits a described situation

Learning Objectives

• Distinguish physical (often reversible) changes from chemical (usually not easily reversible) changes by observing evidence.
• Explain how state changes like melting, freezing, boiling, and condensation can be reversed under different conditions.
• Use particle and substance ideas (atoms rearrange vs. form/state changes) to justify whether a change is reversible.

Learning Objectives

• Explain how the centre of gravity and centre of buoyancy affect whether a floating object stays upright
• Describe how metacentric height and hull geometry influence righting and capsizing risk
• Use simple stability ideas to predict how loading and weight distribution change equilibrium

Learning Objectives

• Explain how fluid-mechanics ideas (viscosity, vessel size, and pressure gradients) relate to blood flow rate and resistance.
• Describe how non-Newtonian blood behavior affects perfusion and why arteries respond differently to systolic vs. diastolic pressure.
• Predict how vessel narrowing (stenosis) changes flow and pressure drop using simplified pipe-flow reasoning.+ Show more

Learning Objectives

• Explain how DNA carries hereditary information in cells.
• Describe the roles of genes, chromosomes, and proteins in producing traits.
• Connect DNA changes (mutations) to possible differences in protein production and inherited variation.

Learning Objectives

• Explain Newton’s third law using the idea of paired action–reaction forces on two interacting objects
• Identify action–reaction force pairs in real-world scenarios and describe their directions and timing
• Connect an object’s motion response to differences in mass and motion state during an interaction

Learning Objectives

• Distinguish between observations, claims, and assumptions in science questions.
• Write testable questions that connect to measurable or observable evidence.
• Use evidence and variables to explain how data can support or weaken a proposed explanation.

Learning Objectives

• Use evidence from data to identify trends, patterns, and relationships
• Distinguish correlation from causation and justify uncertainty in scientific explanations
• Evaluate the role of outliers and consider possible measurement errors or new hypotheses

Learning Objectives

• Explain how net force is determined when forces act in opposite directions
• Predict how net force affects acceleration, including changes in speed and direction
• Use the idea of the larger force to determine the direction of net motion

Learning Objectives

• Identify common physical, chemical, and biological indicators used to assess water quality.
• Interpret indicator measurements (ranges and trends) to judge aquatic health for different water uses.
• Explain why water-quality indicators can vary due to natural conditions and measurement limitations.+ Show more

Learning Objectives

• Explain how forces can change an object's motion, including starting, stopping, and changing direction
• Distinguish between balanced and unbalanced forces by using the concept of net force
• Use evidence from real situations to describe how acceleration relates to the direction and size of a net force

Learning Objectives

• Explain the difference between renewable and nonrenewable resources and why renewability matters for sustainability
• Describe how human extraction and use of resources can affect ecosystems and environmental health
• Evaluate whether resource use is sustainable by considering demand, regeneration capacity, and environmental indicators

Learning Objectives

• Explain how impacts can occur at different stages of a product’s life cycle, including manufacturing, use, and end-of-life.
• Identify trade-offs between options by comparing benefits and costs across the full life cycle.
• Use systems thinking to evaluate design choices under constraints such as pollution, waste, energy, and maintenance.

Learning Objectives

• Explain how green infrastructure manages stormwater using nature-based and engineered approaches.
• Describe key functions such as infiltration, slowed runoff, and capture of sediment and nutrients.
• Identify design factors (soil media, slope, vegetation type, and storage volume) that affect performance.

Learning Objectives

• Differentiate between mass and weight using gravity as the key idea for weight.
• Explain how mass stays constant while weight changes when gravitational acceleration changes.
• Use correct units and measurement tools to describe mass and weight in real-world situations.

Learning Objectives

• Explain how planetary density and composition provide evidence for differentiation and heat history
• Use observations of craters, volcanic landforms, and surface renewal to infer impact and resurfacing timelines
• Describe how orbital patterns and planet arrangements reflect gravitational interactions during early solar system evolution+ Show more

Learning Objectives

• Explain power as the rate of doing work and rate of transferring energy
• Use SI units of power (watts, W) to interpret motor and mechanical system performance
• Relate mechanical output power to torque and rotational speed, including efficiency and losses

Learning Objectives

• Explain how elastic forces act when a spring or elastic material is deformed
• Use proportional ideas (force vs. displacement) to describe linear elastic behavior and its limits
• Identify how the restorative direction of elastic forces helps produce overall force balance in mechanical systems

Learning Objectives

• Identify system components and distinguish internal interactions from external interactions.
• Use force accounting to predict static equilibrium or net acceleration in complex systems.
• Explain how multiple forces combine to produce observable motion or balanced conditions.

Learning Objectives

• Explain how intermolecular forces influence melting point, boiling point, and vapor pressure
• Use particle-level reasoning to predict changes in volatility and solubility
• Connect molecular interactions to real Alberta conditions such as freeze–thaw cycles, oil-sands hydrocarbon behavior, and humidity-driven evaporation

Learning Objectives

• Describe the main reservoirs of Earth’s freshwater and saline water and compare their relative proportions.
• Explain how climate, topography, and geology affect where water is stored and where it can be extracted as usable freshwater.
• Evaluate why uneven water distribution creates challenges for human water security and transboundary water management.

Learning Objectives

• Explain the conservation of mass for physical and chemical changes in a closed system.
• Use particle and weighing ideas to account for all matter before and after a change.
• Interpret why total mass stays the same when nothing escapes a sealed container.

Learning Objectives

• Explain how corrosion involves chemical change and is influenced by environmental factors such as moisture and salts
• Identify evidence of corrosion by describing changes in material properties and new substances formed
• Connect protective strategies (coatings, galvanization, drainage) to how they slow corrosion reactions

Learning Objectives

• Classify substances and mixtures as elements, compounds, or mixtures based on particle-level composition.
• Distinguish between pure substances and mixtures using observable properties and reasoning.
• Use classification to explain real-world examples such as groundwater minerals and oil-sands crude oil.+ Show more

Learning Objectives

• Explain how conservation of mass applies across a multi-step reaction network.
• Describe reversible reactions and dynamic equilibrium in terms of forward and reverse microscopic changes.
• Use mass relationships to predict how intermediates and competing pathways affect observed products.

Learning Objectives

• Explain how changing magnetic flux and relative motion can produce an electromotive force (EMF).
• Describe how an induced current is affected by the rate of change of flux and the number of turns in a coil.
• Connect electromagnetic induction to real systems such as transformers and electrical generators.

Learning Objectives

• Explain how the fossil record shows that life changes over long periods of time.
• Compare older and younger rock layers to identify patterns in fossil evidence.
• Use anatomical similarities and differences to support evolutionary relationships.

Learning Objectives

• Explain how coefficients in a balanced chemical equation preserve the number of atoms of each element.
• Differentiate between changing chemical formulas and changing coefficients when balancing equations.
• Use balanced equations to reason about relative amounts of reactants and products.

Learning Objectives

• Describe how magnetic fields are produced by magnets and by moving electric charges in current-carrying wires.
• Use field line diagrams to predict the direction and relative strength of a magnetic field.
• Explain how ferromagnetic materials and electromagnets affect magnetic field patterns and practical applications.

Learning Objectives

• Explain how abiotic factors and biotic interactions can change population size and distribution.
• Describe population change using birth, death, immigration, and emigration rates.
• Use ideas of density dependence and temporal variation to predict local population trends.

Learning Objectives

• Explain how birth rates, death rates, immigration, and emigration affect population growth over time.
• Describe how age structure, reproductive strategies, and resource availability influence intrinsic growth rates.
• Distinguish between density-dependent and density-independent factors that change population trajectories.

Learning Objectives

• Explain how natural selection requires variation and depends on environmental conditions
• Describe how advantageous traits become more common over successive generations
• Use examples (such as antibiotic resistance) to illustrate changes in trait frequencies

Learning Objectives

• Explain how genetic diversity within and among populations helps organisms adapt to changing environments.
• Describe how mutation, gene flow, population size, and natural selection influence genetic variation.
• Use genetic indicators to predict which populations are more likely to recover after disturbance or decline.

Learning Objectives

• Explain how energy enters ecosystems through photosynthesis and moves through food chains and food webs
• Describe how energy is lost at each trophic level as heat and how this limits ecosystem structure
• Use energy-flow ideas to interpret why top predators are usually fewer in number

Learning Objectives

• Explain how models help scientists and engineers reason about a system before building a final design.
• Identify different types of models (physical, graphical, and computational) and what each type represents.
• Use modeling ideas to make and justify predictions about how changes to a design might affect outcomes.

Learning Objectives

• Classify igneous, sedimentary, and metamorphic rocks using mineral composition, texture, and field relationships.
• Explain how the rock cycle transforms rocks through melting, cooling, sedimentation, compaction, and metamorphism.
• Use evidence such as fossils in strata and radiometric dating to describe Earth’s changing environments and geologic time.

Learning Objectives

• Explain how criteria and constraints are used to compare design alternatives in an optimization process.
• Identify tradeoffs when improving one performance goal may worsen another outcome.
• Justify which solution is best by reasoning from given goals and limits.

Learning Objectives

• Describe how rocks can change through melting, cooling, weathering, transport, deposition, and metamorphism.
• Explain how energy transfer and Earth’s spheres (lithosphere, hydrosphere, atmosphere) are involved in the rock cycle.
• Use rock-cycle vocabulary (weathering, sediments, igneous, metamorphic) to interpret statements and scenarios.

Learning Objectives

• Explain how genetic variation arises through DNA changes and how allele combinations form during reproduction.
• Describe how mutations can introduce new alleles and how this variation can influence traits.
• Connect trait variation in populations to natural selection under different environmental conditions.

Learning Objectives

• Understand how to interpret distance-time graphs and what the slope indicates about speed.
• Calculate average speed between two points on a distance-time graph.
• Identify segments of graphs representing constant, increasing, or decreasing speed.+ Show more

Learning Objectives

• Understand how neurons transmit electrical signals for nervous communication.
• Identify cellular features that enhance the speed and fidelity of nerve signaling.
• Explain the neural circuits involved in reflexes, voluntary movements, and gland secretion.+ Show more

Learning Objectives

• Understand how matter cycles through ecosystems involving living and nonliving components.
• Identify processes such as decomposition, gas exchange, and nutrient transformation that return elements to the environment.
• Explain how producers and consumers transfer matter within ecosystems over time.+ Show more

Learning Objectives

• Describe the structure and function of major human organ systems.
• Explain how organs coordinate within systems to maintain internal stability.
• Identify key features that enable cellular specialization to support organ functions.+ Show more

Learning Objectives

• Describe different types of species interactions such as predation, competition, parasitism, mutualism, and commensalism.
• Explain how species interactions influence population dynamics and community structure.
• Analyze the role of predation and mutualism in ecosystem regulation and species survival.+ Show more

Learning Objectives

• Understand the structure and function of vascular networks and circulatory systems in animals.
• Identify key structural features like vessels, valves, and capillary beds that enable directional flow.
• Explain the roles of cellular components such as blood cells, xylem, and phloem in transport.+ Show more

Learning Objectives

• Understand the principles of trophic modeling in ecological systems.
• Identify different types of models used to represent energy and matter fluxes.
• Explain how models estimate production, respiration, and decomposition rates.+ Show more

Learning Objectives

• Explain the role of primary producers in ecological energy pathways.
• Compare photosynthetic efficiency among grasses, shrubs, and boreal trees in Alberta.
• Identify factors influencing primary productivity such as soil nutrients and light.+ Show more

Learning Objectives

• Understand the factors influencing population size and distribution in different environments.
• Recognize how abiotic and biotic factors interact to influence population changes.
• Analyze examples of population responses in Alberta ecosystems such as migrations and outbreaks.+ Show more