Grade 8 Science Worksheets

Learning Objectives

• Explain how gene variants can lead to different observable traits (phenotypes)
• Use dominant and recessive patterns to predict which traits appear across generations
• Describe how relationships and mutations provide evidence of genetic inheritance+ Show more

Learning Objectives

• Explain how reaction evidence (color change, precipitate, gas) indicates that new substances form.
• Use particle models to describe how atoms are conserved during chemical reactions.
• Connect conservation of matter to mass remaining constant in a closed system.

Learning Objectives

• Identify biotic and abiotic components of an ecosystem and describe how each affects living things.
• Explain the roles of producers, consumers, and decomposers in cycling energy and matter.
• Analyze how interactions among ecosystem components influence where species live and how energy flows.

Learning Objectives

• Explain how a spring’s restoring force changes when it is stretched or compressed
• Identify the direction of the restorative force in relation to the spring’s deformation
• Describe the proportional (linear) relationship between force and displacement within the elastic limit+ Show more

Learning Objectives

• Explain how quantitative measurements and qualitative observations can provide evidence for or against a design choice.
• Describe how testing criteria guide what counts as acceptable results.
• Use evidence from repeated trials to evaluate whether outcomes are likely due to chance.+ Show more

Learning Objectives

• Explain what it means for a process to be a closed system and identify what does or does not exchange with the surroundings.
• Use conservation of mass ideas to predict relationships between reactants and products in a contained chemical change.
• Interpret examples of gas changes and mass changes when matter exchange is prevented.

Learning Objectives

• Identify evidence in a text that describes a solid’s property
• Explain how particle spacing and packing help solids keep a fixed shape
• Use particle models to distinguish solids from other states of matter

Learning Objectives

• Explain how mechanical energy can be dissipated into less useful forms such as thermal energy due to friction, inelastic deformation, and air resistance.
• Describe how energy efficiency relates input energy to useful output energy in mechanical systems.
• Identify real-world examples of energy dissipation and predict how they affect motion and efficiency.+ Show more

Learning Objectives

• Identify independent, dependent, and controlled variables in an experiment design.
• Select measurable data-collection outcomes that match the research question.
• Use control variables to reduce confounding and improve fairness when comparing groups.+ Show more

Learning Objectives

• Explain how invasive (non-native) species can disrupt native biodiversity and ecosystem balance
• Describe how invasive species can change energy pathways and nutrient cycles within food webs
• Identify pathways that allow invasive species to spread and predict ecosystem-level consequences+ Show more

Learning Objectives

• Explain how predator–prey interactions affect population size and behavior over time
• Describe how refuges and compensatory mechanisms can reduce or change predator impacts
• Use functional response ideas to predict how predator consumption can change with prey density+ Show more

Learning Objectives

• Explain how a claim, evidence, and reasoning work together in CER argumentation.
• Use appropriate scientific evidence (measurements, trends, comparisons) to support a claim.
• Write reasoning that connects evidence to a claim using scientific principles and clear cause logic.+ Show more

Learning Objectives

• Explain how predation, competition, mutualism, and parasitism affect individual survival and reproduction
• Connect species interactions to changes in population size over time
• Use evidence from interactions to predict how community structure can shift when the environment changes

Learning Objectives

• Understand the key processes involved in nutrient cycling within ecosystems.
• Identify the roles of decomposers, nitrogen fixation, and mineralization.
• Learn how environmental factors such as temperature and moisture influence nutrient cycling rates.+ Show more

Learning Objectives

• Understand how abiotic and biotic factors influence population size and distribution.
• Identify examples of population changes in Alberta ecosystems.
• Explain the roles of birth, death, immigration, and emigration in population dynamics.+ Show more

Learning Objectives

• Explain how food webs integrate multiple feeding relationships and energy pathways
• Describe how redundancy, indirect interactions, and species loss can stabilize or destabilize communities
• Analyze how seasonal migrations and life-cycle stages change link strengths in food webs+ Show more

Learning Objectives

• Classify substances as elements, compounds, or mixtures using observable and particle-based evidence
• Distinguish between pure substances and mixtures by reasoning about composition
• Apply classification to predict properties and choose appropriate measurement approaches in environmental and industrial contexts

Learning Objectives

• Understand how power quantifies energy transfer per unit time.
• Compare the concept of efficiency in electrical devices and systems.
• Identify loss mechanisms such as resistive heating, transformer losses, and transmission dissipation.+ Show more

Learning Objectives

• Define constant speed and describe how it appears on a distance-time graph
• Identify constant speed from a graph
• Differentiate between average speed and instantaneous speed+ Show more

Learning Objectives

• Explain how energy and matter cycle through Earth systems using photosynthesis, respiration, and decomposition
• Identify key processes and vocabulary related to carbon and oxygen in ecosystems
• Use evidence from reading to determine main ideas and make accurate science claims

Learning Objectives

• Explain how food webs combine many feeding relationships into a connected system.
• Describe how indirect interactions and redundancy can affect community stability.
• Use the ideas of energy pathways and link strength to predict effects of species loss.

Learning Objectives

• Recognize how gravity's components act on objects on slopes.
• Understand the effect of slope angle on force components and motion.
• Analyze real-world examples of forces on inclines.

Learning Objectives

• Understand how mass influences the acceleration of objects under the same net force.
• Identify the inverse relationship between mass and acceleration.
• Compare the effects of different masses when applying similar forces.

Learning Objectives

• Explain how aerodynamic drag acts as a velocity-dependent force that opposes motion through air.
• Describe how vehicle or equipment shape and cross-sectional area affect drag and efficiency.
• Connect drag to real-world designs such as prairie wind effects on high-profile vehicles and wind turbine performance.

Learning Objectives

• Describe voltage as electric potential difference and explain how it relates to energy per unit charge.
• Use reference points and polarity (+/−) to determine voltage between two points in a circuit.
• Predict how voltage affects current when resistance is constant.

Learning Objectives

• Understand how human land use impacts habitat structures
• Identify different types of human interventions in ecosystems
• Analyze the effects of resource extraction and urban development+ Show more

Learning Objectives

• Understand the roles of herbivores, omnivores, and carnivores in ecosystems
• Identify examples of herbivores and their feeding behaviors
• Analyze how feeding relationships influence energy flow and trophic levels

Learning Objectives

• Understand how net force affects the motion of an object.
• Describe the relationship between mass, force, and acceleration.
• Predict how changing force or mass influences motion based on qualitative reasoning.+ Show more

Learning Objectives

• Describe how climate variation influences temperature, precipitation, and extreme events.
• Explain the impact of climate change on species ranges, phenology, and ecosystem interactions.
• Analyze potential consequences of climate drivers on biodiversity and ecosystem functioning.+ Show more

Learning Objectives

• Identify and describe different forces acting on a vehicle in a real-world situation.
• Interpret force vectors in free-body diagrams.
• Understand how forces influence the motion of objects.+ Show more

Learning Objectives

• Identify different trophic levels such as herbivores, omnivores, and carnivores within Alberta ecosystems.
• Explain how feeding relationships and energy transfer patterns shape food chains and food webs.
• Analyze the effects of omnivory on trophic level distinctions and energy flow.+ Show more

Learning Objectives

• Explain the concept of constant speed and how it is represented on a distance-time graph.
• Calculate average speed using proportional relationships based on distance and time.
• Differentiate between instantaneous speed and average speed in various motion contexts.+ Show more

Learning Objectives

• Understand the principle of conservation of mass in physical and chemical processes.
• Identify real-world applications of mass conservation in industrial and environmental contexts.
• Analyze closed systems to account for all reactants and products during transformations.+ Show more

Learning Objectives

• Interpret constant speed using distance–time graphs and the idea of equal distances in equal time intervals
• Calculate distance or time using the proportional relationship distance = speed × time
• Distinguish constant speed from changing speed by analyzing slope and identifying average vs. instantaneous speed

Learning Objectives

• Understand the relationship between net force, mass, and acceleration.
• Predict how changes in force and mass affect motion.
• Analyze qualitative reasoning about force, mass, and their effects on objects.

Learning Objectives

• Understand how speed quantifies how quickly an object covers distance over time.
• Distinguish between constant speed and average speed.
• Apply proportional reasoning to relate distance, speed, and time.+ Show more

Learning Objectives

• Differentiate static electricity and current electricity by origin, mobility of charges, and typical effects
• Use the terms conductor, charge imbalance, and current to explain real-world electric phenomena
• Identify safe and unsafe ways to handle electrostatic discharge and electrical devices

Learning Objectives

• Identify the main idea and key details about predator–prey balance
• Explain how predation affects prey populations and predator populations
• Describe how refuges and compensatory mechanisms influence population outcomes

Learning Objectives

• Use mass conservation to relate masses of reactants and products in closed systems
• Apply proportional reasoning from balanced chemical equations to predict relative product amounts
• Interpret observed residues by comparing expected and measured mass changes in reaction systems

Learning Objectives

• Identify observable signs indicating a chemical reaction
• Differentiate between physical and chemical changes
• Understand real-world examples of chemical signatures

Learning Objectives

• Identify which variables belong on the x-axis and y-axis when creating graphs from data
• Select an appropriate graph type (scatter plot, line graph, or bar graph) for a given data situation
• Interpret graphs using correct axis labels, units, and consistent numerical scales+ Show more

Learning Objectives

• Explain how divergent, convergent, and transform plate boundaries shape Earth’s surface
• Describe how plate interactions relate to earthquakes, volcanic activity, and mountain building
• Interpret how uplift, faulting, and erosion contribute to long-term changes in topography

Learning Objectives

• Understand the concepts of reactants and products in chemical reactions.
• Learn how to identify and interpret reaction quantities.
• Apply measurable data to predict and analyze chemical reactions.

Learning Objectives

• Understand what magnetic fields are and how they are produced.
• Identify sources of magnetic fields in everyday objects.
• Describe the pattern and direction of magnetic field lines.+ Show more

Learning Objectives

• Explain the energy transformation process in a pendulum between potential and kinetic energy.
• Identify factors such as amplitude, mass, and length that influence pendulum motion and energy transfer.
• Describe how energy conservation is observed in an ideal pendulum system without dissipation.+ Show more

Learning Objectives

• Understand various separation techniques based on physical properties.
• Identify applications of filtration, evaporation, and distillation in real-world scenarios.
• Explain how separation methods are used in industries like water treatment, oil refining, and mineral processing.+ Show more

Learning Objectives

• Identify homogeneous mixtures and distinguish them from heterogeneous mixtures using particle-level reasoning and macroscopic observations.
• Explain how solubility and concentration affect the behavior of solutions and alloys.
• Interpret examples of homogeneous mixtures in environmental and transportation contexts.

Learning Objectives

• Explain how particle motion relates to gas pressure and temperature.
• Describe how gases expand or compress in response to temperature changes.
• Use diffusion to predict how gases spread through air over time.