Grade 8 Science Worksheets

Learning Objectives

• Explain how biotic and abiotic factors affect population change
• Differentiate density-dependent and density-independent population factors
• Interpret population graphs and birth/death rate trends+ Show more

Learning Objectives

• Explain how biotic and abiotic variables function as ecosystem stocks
• Identify flows connecting variables within an ecosystem model
• Predict how changes propagate through connected ecosystem pathways+ Show more

Learning Objectives

• Explain how energy moves through producers, consumers, and decomposers in terrestrial and aquatic food webs.
• Describe trophic levels and predict how energy loss affects biomass and population size at higher levels.
• Use ecological efficiency and primary production to interpret patterns in community structure.

Learning Objectives

• Differentiate weather and climate using evidence from observations over time
• Explain how energy from the Sun, air-mass movement, and Earth’s surface affect typical conditions
• Use temperature and precipitation patterns to interpret regional atmospheric behavior

Learning Objectives

• Understand the importance of connecting evidence to explanations.
• Identify claims, evidence, and reasoning within scientific contexts.
• Differentiate between supported and unsupported claims based on data.+ Show more

Learning Objectives

• Understand how technological choices affect the environment and society.
• Analyze the long-term consequences of energy sources, materials, and disposal.
• Evaluate trade-offs involved in sustainable technology solutions.+ Show more

Learning Objectives

• Understand the concept of constant speed and how it relates to distance and time.
• Interpret distance-time graphs to identify instances of constant speed and acceleration.
• Perform calculations involving constant speed and proportional relationships.+ Show more

Learning Objectives

• Identify different types of geologic evidence supporting plate movements.
• Explain how matching patterns of rocks and fossils support continental drift.
• Describe the significance of mountain belts, trenches, and mid-ocean ridges in plate tectonics.+ Show more

Learning Objectives

• Explain how slope on a distance-time graph relates to speed and how flat segments represent rest.
• Calculate average speed using distance and time intervals from points on a distance-time graph.
• Interpret curved segments to describe changing speed and acceleration in motion.

Learning Objectives

• Describe how energy moves through trophic levels in one direction through an ecosystem.
• Explain why available energy decreases from producers to consumers.
• Use food chains and food webs to predict how changes affect population sizes.+ Show more

Learning Objectives

• Explain how energy is stored in objects interacting at a distance, including gravitational, elastic, and magnetic potential energy.
• Describe how changes in the position or configuration of objects affect the amount of stored energy.
• Connect the magnitude of potential energy to variables such as height, compression, and magnetic distance.+ Show more

Learning Objectives

• Identify common failure points in mechanical and electrical designs.
• Understand how failure points relate to specific design features.
• Recognize the importance of balancing trade-offs to improve design durability.

Learning Objectives

• Understand the concept of torque and how it relates to rotational forces.
• Describe the conditions necessary for static equilibrium in rotational systems.
• Explain the relationship between net torque, angular acceleration, and rotational inertia.+ Show more

Learning Objectives

• Trace carbon and water atoms through ecosystem reservoirs
• Explain how photosynthesis transforms matter in ecosystems
• Explain how respiration transforms matter in ecosystems+ Show more

Learning Objectives

• Explain linear momentum and how it changes during interactions between objects
• Use conservation of momentum to predict outcomes of collisions in a closed system
• Relate impulse to change in momentum using force–time reasoning+ Show more

Learning Objectives

• Explain how constant particle motion accounts for the physical properties of solids, liquids, and gases.
• Use attractive and repulsive forces to describe how particles behave during changes in state.
• Relate particle spacing and motion to compressibility and diffusion at different temperatures.

Learning Objectives

• Explain how reaction distance and braking distance combine to determine total stopping distance
• Describe how tire-road friction and decelerating force affect how quickly a vehicle slows
• Evaluate how winter conditions and vehicle systems (like ABS and brake fade) change stopping outcomes

Learning Objectives

• Explain how calibration improves accuracy and how consistent procedures improve precision
• Distinguish random variation from real effects by using replication
• Justify how outliers should be handled to preserve data integrity without bias+ Show more

Learning Objectives

• Differentiate point sources from nonpoint sources of water pollution using real-world examples.
• Explain how nutrient enrichment can lead to eutrophication and oxygen depletion in aquatic systems.
• Describe how sediment loading and chemical pollutants can be transported from land to surface water and groundwater.

Learning Objectives

• Identify appropriate axes, units, and scales for data on a graph
• Interpret scatter plots, line graphs, and bar graphs for trends and relationships
• Use models to summarize patterns without adding new variables+ Show more

Learning Objectives

• Explain the law of conservation of energy in terms of energy transfer and transformation
• Identify where mechanical energy goes when friction slows an object
• Use energy accounting (before-and-after reasoning) to track energy changes in a system

Learning Objectives

• Identify independent, dependent, and controlled variables in a study plan
• Explain how control variables reduce confounding in experimental results
• Choose measurable data collection methods that match a research question+ Show more

Learning Objectives

• Explain how exponential and logistic growth patterns differ for populations over time
• Describe how carrying capacity, time lags, and predation can shape population trajectories
• Interpret cyclical population changes using examples such as snowshoe hare and lynx+ Show more

Learning Objectives

• Distinguish correlation from causation when evaluating scientific claims.
• Use evidence direction, alternative explanations, and consistency to judge causal reasoning.
• Identify what additional data would be needed to support or rule out competing causes.

Learning Objectives

• Explain how earthquakes form at faults due to stress buildup and sudden slip
• Describe how P-waves, S-waves, and surface waves travel and affect Earth’s surface
• Distinguish between earthquake magnitude and intensity and relate them to hazard awareness+ Show more

Learning Objectives

• Explain how evidence-based reasoning uses trends, patterns, and relationships in data
• Distinguish correlation from causation and explain why experimental design matters
• Identify outliers and describe how uncertainty and measurement error affect conclusions

Learning Objectives

• Explain how ecosystems respond to disturbances and what resilience means for returning to functional conditions.
• Describe how population changes can affect resource availability and subsequent community development.
• Distinguish between ecosystem stability and the idea that ecosystems experience no change.

Learning Objectives

• Explain how predation affects predator and prey population sizes over time
• Describe behavioral and trait-mediated adaptations that can change survival
• Identify how refuges and compensatory mechanisms can reduce predator impacts+ Show more

Learning Objectives

• Explain how non-native species can disrupt native biodiversity, hydrology, and food webs.
• Describe at least two ecological consequences of invasive species for populations over time.
• Identify common pathways by which invasive species spread in landscapes.+ Show more

Learning Objectives

• Explain how gas particle motion relates to temperature and pressure in a confined space.
• Use particle models to describe how gases expand, compress, and diffuse.
• Predict how changes in temperature affect pressure and gas behavior in real-world Alberta contexts.

Learning Objectives

• Understand the proportions of freshwater and saline water reservoirs worldwide.
• Identify spatial patterns of water distribution in different regions.
• Analyze the factors influencing freshwater availability such as climate and geology.+ Show more

Learning Objectives

• Explain how nutrients move through biotic and abiotic parts of an ecosystem over time
• Describe the roles of decomposers, mineralization, and nitrogen fixation in nutrient cycling
• Predict how changes in temperature, moisture, or water flow can affect nutrient availability and productivity+ Show more

Learning Objectives

• Identify herbivores, omnivores, and carnivores by their feeding roles in food chains.
• Explain how trophic position affects energy transfer and biomass from one consumer to another.
• Describe how omnivory can blur discrete trophic levels while still following energy-flow patterns.+ Show more

Learning Objectives

• Explain how trophic modeling represents energy and matter flow between compartments and environmental pools.
• Use mass-balance ideas to describe how production, respiration, and decomposition rates relate to observed fluxes.
• Identify model assumptions and predict how changing a parameter can alter model outcomes.

Learning Objectives

• Describe how primary producers convert energy into organic matter and support food chains.
• Compare factors that affect primary productivity in different plant types and ecosystems.
• Explain how seasonal timing and nutrient/light availability influence energy available to consumers.

Learning Objectives

• Explain how ecosystem models use trophic levels, nutrient pools, and fluxes to represent processes.
• Interpret model outputs to describe what changes in a population over time and what stays conserved.
• Identify common assumptions and limitations of simplified ecosystem models.+ Show more

Learning Objectives

• Explain how intermolecular forces affect melting point, boiling point, and vapour pressure
• Use the idea of attractions between particles to predict volatility and solubility
• Apply intermolecular force ideas to everyday Alberta examples such as freeze–thaw and evaporation

Learning Objectives

• Explain how particle motion relates to gas temperature and pressure
• Describe how changes in collision frequency and force affect gas pressure
• Use particle ideas to connect macroscopic observations to microscopic models

Learning Objectives

• Explain how chemical reactions provide evidence that new substances form.
• Use particle models to describe conservation of atoms during chemical reactions.
• Predict and interpret reaction evidence such as gas production, precipitates, and color change in a closed system.+ Show more

Learning Objectives

• Explain how latitude, sunlight angle, and cloud cover influence incoming and reflected energy in Earth’s climate.
• Describe how atmospheric circulation and ocean currents redistribute heat and affect regional climate.
• Connect greenhouse gases to changes in the balance between incoming and outgoing radiation.+ Show more

Learning Objectives

• Identify observable indicators that demonstrate a chemical change.
• Differentiate between physical and chemical changes based on evidence.
• Recognize real-world examples of chemical reactions and their indicators.+ Show more

Learning Objectives

• Understand the concept of adaptation in organisms
• Identify different types of environmental pressures
• Recognize examples of adaptation such as pesticide resistance and beak variation+ Show more

Learning Objectives

• Differentiate weather and climate using short-term vs long-term atmospheric patterns
• Explain how air masses, fronts, and pressure systems influence precipitation and storm development
• Describe how temperature, humidity, and atmospheric pressure changes can produce measurable weather events+ Show more

Learning Objectives

• Explain how plate movements reshape Earth’s landforms over geologic time
• Identify the evidence that supports plate tectonic theory (coastline fit, seafloor features, earthquakes)
• Describe how divergent, convergent, and transform boundaries differ and where earthquakes/volcanoes commonly occur

Learning Objectives

• Explain what viscosity means and distinguish dynamic viscosity from kinematic viscosity.
• Relate low-viscosity and high-viscosity fluids to how they flow (laminar vs turbulent) and everyday examples.
• Describe how temperature and shear affect viscosity and predict practical consequences for pumping and lubrication.+ Show more

Learning Objectives

• Explain how conduction, convection, and radiation transfer thermal energy
• Describe how material properties affect the rate of heat flow
• Connect temperature changes to microscopic particle energy distributions+ Show more

Learning Objectives

• Explain how net force is determined when multiple forces act on an object at the same time
• Predict motion outcomes (acceleration or constant velocity) using the direction and size of opposing forces
• Relate real-world forces such as weight and friction to changes in velocity

Learning Objectives

• Explain how ballast tanks change a submarine’s buoyancy by altering displaced volume and internal mass distribution
• Describe neutral buoyancy and how it supports submerged navigation at a chosen depth
• Interpret simple quantitative relationships involving tank volume, fluid density, and net buoyant force+ Show more