Grade 8 Science Worksheets

Learning Objectives

• Explain how criteria define measurable success in engineering and scientific design
• Identify common constraint types such as limits on time, cost, size, mass, safety, and available technology
• Use criteria and constraints to compare design options and justify a realistic choice

Learning Objectives

• Explain how equal and opposite forces produce zero net force and no change in motion
• Differentiate static equilibrium from dynamic equilibrium using real-life examples
• Predict whether an object will remain at rest or move at constant velocity based on balanced vs. unbalanced forces+ Show more

Learning Objectives

• Differentiate static electricity from current electricity using origin, mobility, and effects of charge
• Describe how electric charge transfers between objects and how conductors and insulators affect charge movement
• Use basic vocabulary (proton, electron, conductor, insulator, ion) to explain electrostatic phenomena

Learning Objectives

• Explain Newton’s three laws in terms of force, motion, and mass
• Predict how acceleration and motion change when the net force on an object changes
• Identify action–reaction pairs in everyday situations+ Show more

Learning Objectives

• Differentiate primary and secondary ecological succession using key starting conditions
• Explain how species traits, dispersal, and interactions influence successional pathways
• Describe how disturbance frequency and magnitude shape biodiversity and stable states

Learning Objectives

• Explain how elastic forces arise when a material or spring is deformed
• Describe the linear elastic relationship between force and displacement (F = kx) and its limits
• Determine the direction of the restoring (elastic) force relative to displacement+ Show more

Learning Objectives

• Apply particle theory and the idea of mixtures/chemical signatures to explain how substances move and change in environmental systems.
• Use classification and mass conservation reasoning to track sources, sinks, and transformations during nutrient cycling and contamination transport.
• Interpret system-level relationships in closed or semi-closed environments such as lake basins and contaminated sites.

Learning Objectives

• Explain how electric motors convert electrical energy into mechanical motion using magnetic fields and current-carrying conductors.
• Explain how generators convert mechanical motion into electrical energy using electromagnetic induction.
• Identify how design parameters (coil turns, flux strength, and load) affect generator or motor efficiency and power output.+ Show more

Learning Objectives

• Explain circular motion using the ideas of centripetal force, inward acceleration, and changing direction
• Use relationships between centripetal force, mass, speed, and turn radius to predict what happens in different situations
• Interpret real-world examples (road curves and amusement rides) in terms of force balance and inertia

Learning Objectives

• Explain how energy enters ecosystems through photosynthesis and moves through food chains and food webs.
• Describe why energy decreases at each trophic level due to heat loss and inefficient transfer.
• Use energy flow concepts to predict patterns in ecosystem productivity and the number of top predators.

Learning Objectives

• Explain how invasive (non-native) species enter ecosystems and spread.
• Describe how invasive species can disrupt food webs, hydrology, and nutrient cycling.
• Analyze ecological impacts on native biodiversity and ecosystem resilience.

Learning Objectives

• Understand the different drivers influencing global temperature changes over time.
• Analyze evidence from paleoclimate and modern records to attribute causes of climate change.
• Evaluate multiple lines of scientific evidence to distinguish natural and anthropogenic influences.+ Show more

Learning Objectives

• Understand the principles of energy conservation.
• Identify different methods to save energy at home and school.
• Learn about renewable and non-renewable energy sources.+ Show more

Learning Objectives

• Understand how genetic inheritance contributes to variation within populations.
• Identify evidence of heredity and genetic differences among individuals.
• Explain how recombination and mutations lead to variation.+ Show more

Learning Objectives

• Identify the major organelles in a cell and describe their functions.
• Explain how organelles work together to maintain cellular activities.
• Differentiate between structural features and biochemical roles of organelles.+ Show more

Learning Objectives

• Understand the basic concept of speed as distance divided by time.
• Differentiate between constant speed and average speed.
• Apply proportional reasoning to motion scenarios.+ Show more

Learning Objectives

• Understand how evidence-based observations lead to forming testable questions.
• Identify the key components of a hypothesis involving measurable factors and outcomes.
• Differentiate between testable and non-testable claims based on clarity and variables.+ Show more

Learning Objectives

• Understand how to connect evidence to mechanisms in scientific explanations.
• Differentiate between claims, reasoning, and alternative explanations.
• Evaluate evidence to support or refute different hypotheses.+ Show more

Learning Objectives

• Understand factors influencing population growth and decline.
• Identify biotic and abiotic variables affecting populations.
• Analyze case studies of population oscillations and stabilization.+ Show more

Learning Objectives

• Understand the historical development of cell theory.
• Identify the core principles that define cellular biology.
• Recognize how microscopes and imaging techniques support cell theory.+ Show more

Learning Objectives

• Explain how energy is transferred and transformed during collisions.
• Differentiate between elastic and inelastic collisions based on energy conservation.
• Understand the role of momentum in collision outcomes.+ Show more

Learning Objectives

• Describe the structure of chloroplasts and their role in photosynthesis.
• Explain the light-dependent reactions and Calvin cycle processes.
• Identify environmental factors affecting photosynthesis efficiency.+ Show more

Learning Objectives

• Understand the concept of hydrostatic pressure and its variation in fluids.
• Identify factors affecting hydrostatic pressure in liquids.
• Explain how hydrostatic variation influences engineering and natural systems.+ Show more

Learning Objectives

• Interpret scale relationships among solar system objects using quantitative data.
• Compare diameters, masses, and distances of planets and other celestial bodies.
• Understand and apply astronomical units and relative scaling to analyze spatial and temporal patterns.+ Show more

Learning Objectives

• Understand various nature-based and engineered approaches for stormwater management.
• Identify functions such as infiltration, runoff reduction, and sediment capture.
• Explain design parameters affecting the effectiveness of green infrastructure.+ Show more

Learning Objectives

• Understand the concept of power as the rate of doing work.
• Apply SI units of watts to measure power in mechanical systems.
• Relate motor specifications, torque, and rotational speed to output power.+ Show more

Learning Objectives

• Understand the principles and methods of ecological restoration in Alberta contexts.
• Identify different approaches to habitat reclamation, soil amendment, and species reintroductions.
• Learn about monitoring and timeframes for ecosystem recovery after restoration efforts.+ Show more

Learning Objectives

• Describe the components and functions of innate and adaptive immune mechanisms.
• Identify key cellular players such as macrophages, neutrophils, lymphocytes, and antigen-presenting cells.
• Explain processes such as phagocytosis, antibody production, and cell-mediated cytotoxicity.+ Show more

Learning Objectives

• Describe the stages of aerobic respiration: glycolysis, Krebs cycle, and oxidative phosphorylation.
• Explain the role of mitochondria in ATP production and how membranes facilitate this process.
• Compare aerobic and anaerobic pathways of energy generation in cells.+ Show more

Learning Objectives

• Identify various physical, chemical, and biological water quality indicators.
• Interpret ranges of indicator parameters for aquatic health and uses.
• Understand sources of variability and the importance of integrated assessment approaches.+ Show more

Learning Objectives

• Understand the concept and purpose of free-body diagrams in physics.
• Identify and interpret different forces such as normal force, tension, friction, and gravity.
• Distinguish between balanced and unbalanced forces and their effects on motion.+ Show more

Learning Objectives

• Understand how models illustrate matter and energy movement in ecosystems.
• Interpret diagrams, flow charts, and balances to analyze ecosystem processes.
• Recognize assumptions and limitations within ecosystem models.+ Show more

Learning Objectives

• Understand the components and structure of ecosystem models, including biotic and abiotic factors.
• Interpret system diagrams and stock-and-flow representations to analyze ecosystem dynamics.
• Evaluate how changes in one component affect the entire ecosystem, supporting concepts of resilience and equilibrium.+ Show more

Learning Objectives

• Understand how climate variation affects water systems and hydrology.
• Identify key consequences of climate change on floods, droughts, and water resources.
• Analyze the interaction between climate impacts and land-use change.+ Show more

Learning Objectives

• Define fluid pressure and understand its SI units.
• Differentiate between surface contact pressure and internal fluid pressure.
• Explain how contact area affects pressure applied.+ Show more

Learning Objectives

• Understand the mechanisms of homeostatic feedback at cellular and system levels.
• Identify examples of homeostasis such as blood glucose regulation and thermoregulation.
• Explain how signals from sensors lead to effectors that restore internal stability.+ Show more

Learning Objectives

• Understand the concepts of torque, lever arm, and rotational equilibrium.
• Analyze conditions for static balance in systems like seesaws and cranks.
• Relate net torque to angular acceleration and rotational inertia.+ Show more

Learning Objectives

• Understand the phases of the cell cycle, including interphase, mitosis, and cytokinesis.
• Describe the molecular role of cyclins, kinases, and checkpoints in regulating cell division.
• Identify examples of cell cycle regulation in tissue growth and wound healing.+ Show more

Learning Objectives

• Understand the relationship between energy transfer, material properties, and temperature change
• Learn about specific heat capacity and how it affects heating and cooling processes
• Apply calorimetric reasoning to compare material responses to heat transfer+ Show more

Learning Objectives

• Describe the mechanisms of surface water and groundwater interaction.
• Explain how baseflow contributes to streams and the influence of permeability and recharge zones.
• Analyze the effects of river stage and seasonal variability on surface-groundwater exchange.+ Show more

Learning Objectives

• Understand the different classes of levers and their components.
• Calculate mechanical advantage based on fulcrum placement and forces.
• Analyze trade-offs between force amplification and movement range.+ Show more

Learning Objectives

• Understand how density-dependent and density-independent factors influence population dynamics.
• Identify examples of density regulation like resource competition, disease, weather events, and human barriers.
• Analyze case studies from Alberta demonstrating density effects on wildlife and environments.+ Show more

Learning Objectives

• Describe observable signatures of chemical change such as temperature change, precipitate formation, colour change, and gas release.
• Identify real-world examples of chemical signatures in environmental and industrial contexts.
• Explain how multiple indicators can be used together to support the identification of chemical reactions.+ Show more

Learning Objectives

• Understand how human land use impacts ecosystems in Alberta.
• Identify human activities that disturb natural habitats and nutrient cycles.
• Analyze the effects of invasive species and resource extraction on biodiversity.+ Show more

Learning Objectives

• Identify major atmospheric and oceanic circulation models including Hadley, Ferrel, and polar cells.
• Explain the influence of the Coriolis effect on wind deflections and ocean currents.
• Link circulation patterns to regional climates such as trade winds, monsoons, and ocean gyres.+ Show more

Learning Objectives

• Understand the chemical processes involved in material corrosion.
• Identify environmental factors that influence corrosion in infrastructure.
• Analyze evidence of corrosion-related chemical transformations.+ Show more

Learning Objectives

• Understand the structure and components of food webs in aquatic and terrestrial systems.
• Analyze how species interactions influence ecosystem stability and resilience.
• Evaluate the effects of seasonal migrations and life-cycle stages on energy pathways.+ Show more

Learning Objectives

• Understand how allele combinations determine observable traits through Mendelian inheritance.
• Identify dominant and recessive alleles and predict genotypic and phenotypic ratios using Punnett squares.
• Explain the segregation of alleles during gamete formation and interpret basic pedigree charts.+ Show more