Grade 8 Science Worksheets

Learning Objectives

• Explain the concept of linear momentum and its conservation in isolated systems.
• Distinguish between elastic and inelastic collisions using real-world examples.
• Apply vector treatment to analyze momentum in one-dimensional collisions.+ Show more

Learning Objectives

• Describe the main processes involved in the water cycle, including evaporation, condensation, precipitation, infiltration, and runoff.
• Explain the concept of water reservoirs and their residence times such as oceans, glaciers, and aquifers.
• Discuss how solar energy and gravity drive fluxes and seasonal redistribution of water across regions.+ Show more

Learning Objectives

• Explain how plate tectonics drives continental drift, mountain building, volcanism, and sea-floor spreading.
• Differentiate convergent, divergent, and transform plate boundaries using observable landforms and earthquake patterns.
• Connect heat transfer, mantle convection, and subduction to long-term crustal recycling and evidence on Earth’s surface.

Learning Objectives

• Understand how seismic records are used to analyze earthquake patterns.
• Identify different types of natural hazard data and their significance.
• Interpret historical and instrumental data to assess risks of earthquakes.+ Show more

Learning Objectives

• Identify key physical, chemical, and biological water quality indicators.
• Interpret the significance of indicator ranges for aquatic health and human use.
• Understand sources of variability and the limitations of single-parameter assessments.+ Show more

Learning Objectives

• Understand different types of population growth models such as exponential and logistic growth.
• Recognize factors influencing population size, including resources and predation.
• Interpret graphs depicting population curves and their significance.+ Show more

Learning Objectives

• Understand the universal attractive nature of gravity and its dependence on mass and distance.
• Explain how gravitational force influences planetary orbits, satellite motion, and tidal effects.
• Apply inverse-square law principles to predict gravitational phenomena.+ Show more

Learning Objectives

• Explain the law of conservation of energy using the idea that energy is transferred and transformed rather than created or destroyed
• Identify common energy transfers between mechanical energy, thermal energy, sound, and other forms
• Use energy-conservation reasoning to account for why moving objects slow down or stop

Learning Objectives

• Understand how energy flows through interconnected food webs in Alberta ecosystems.
• Identify factors that contribute to the stability and resilience of food webs.
• Analyze how seasonal changes and species loss affect food web linkages and energy distribution.+ Show more

Learning Objectives

• Explain the difference between static and kinetic friction
• Identify factors affecting frictional forces such as surface texture and material pairing
• Understand how friction influences vehicle traction, wear, and heat generation+ Show more

Learning Objectives

• Explain how negative and positive feedback help maintain internal stability during homeostasis.
• Describe how cells detect changes using sensors and respond using effectors at both cellular and organ-system levels.
• Use the idea of set point regulation to predict how the body corrects deviations (examples: blood glucose, temperature, water balance).

Learning Objectives

• Describe the major stages of aerobic respiration (glycolysis, Krebs cycle, and oxidative phosphorylation) and how they work together to produce ATP.
• Explain how mitochondria and the proton gradient drive ATP production through chemiosmosis.
• Compare aerobic respiration with anaerobic fermentation in terms of ATP yield and oxygen dependence.+ Show more

Learning Objectives

• Explain how specialized tissues work together to form organs that perform specific functions in organ systems.
• Describe how transport mechanisms and surface area support efficient gas exchange and nutrient distribution.
• Connect epithelial interfaces and blood to how wastes are removed from the body.

Learning Objectives

• Compare plant and animal cell structures and explain how those structures affect cell functions.
• Contrast prokaryotic and eukaryotic cellular organization and relate differences to metabolic capabilities.
• Use cellular features (e.g., chloroplasts, vacuoles, centrioles, lysosomes, cell walls) to describe adaptation to roles such as photosynthesis and motility.

Learning Objectives

• Explain the main phases of the cell cycle, including interphase, mitosis, and cytokinesis.
• Describe how DNA replication and chromosome segregation help maintain genetic information.
• Identify how cyclins, kinases, and checkpoint mechanisms regulate the cell cycle.+ Show more

Learning Objectives

• Describe human influences such as habitat alteration, pollution, resource extraction, and invasive species on ecosystems.
• Explain the effects of anthropogenic activities on biodiversity, food web integrity, and ecosystem services.
• Identify mitigation strategies like habitat restoration and pollution reduction and evaluate their trade-offs.+ Show more

Learning Objectives

• Explain how hydraulic systems transmit force and perform work.
• Evaluate the mechanical advantage provided by piston assemblies.
• Calculate the pressure needed to create specific output forces in hydraulic systems.+ Show more

Learning Objectives

• Understand the concept of integrated water resources management.
• Identify key components such as water allocation, supply planning, and stakeholder coordination.
• Learn about governance instruments like source-protection zones and licensing.+ Show more

Learning Objectives

• Understand how temperature, concentration, surface area, and catalysts influence reaction rates.
• Explain the concepts of molecular collision frequency and activation energy in relation to observable reaction speeds.
• Analyze examples like rusting and effervescence to identify factors affecting reaction times.+ Show more

Learning Objectives

• Explain how stage, discharge, and rating curves are used to quantify streamflow.
• Describe how water quality sensors (conductivity, turbidity, dissolved oxygen) and groundwater monitoring (piezometers) support hydrologic measurement.
• Interpret hydrographs and water-quality time series to identify baseflow, trends, and potential changes across a catchment.+ Show more

Learning Objectives

• Explain how temperature, concentration, surface area, and catalysts affect reaction rates using collision ideas
• Connect activation energy to whether collisions lead to products
• Use observable classroom evidence (rusting, effervescence) to predict changes in reaction rate

Learning Objectives

• Understand how gears transmit and modify energy in mechanical systems.
• Identify different components involved in energy transfer such as motors, gears, pulleys, and hydraulic elements.
• Trace the flow of energy through various mechanical subsystems.+ Show more

Learning Objectives

• Explain how unequal solar heating and Earth’s rotation drive atmospheric circulation cells (Hadley, Ferrel, and polar).
• Describe how the Coriolis effect influences wind direction and helps create trade winds and westerlies.
• Connect major ocean gyres and heat transport to regional climates and multi-year variability such as El Niño–Southern Oscillation.+ Show more

Learning Objectives

• Understand the mechanics of inclined planes and their components.
• Calculate mechanical advantage for ramps and wedges in ideal conditions.
• Analyze how friction affects the effort force required on inclined surfaces.+ Show more

Learning Objectives

• Describe the mechanical advantage of inclined planes and how it relates to slope length and height.
• Calculate ideal and actual mechanical advantages considering friction and surface finish effects.
• Analyze practical situations involving ramps and wedges for material handling and splitting tasks.+ Show more

Learning Objectives

• Identify and 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 examples of mutualism and predation in ecosystems.+ Show more

Learning Objectives

• Identify different types of energy such as kinetic, potential, thermal, chemical, and electrical.
• Describe common energy transformations in everyday systems.
• Understand how energy is conserved and transferred in closed systems.+ Show more

Learning Objectives

• Explain the concept of linear momentum and how it is conserved in collisions.
• Describe the difference between elastic and inelastic collisions at classroom scales.
• Apply the impulse-momentum theorem to predict velocity changes after collisions.+ Show more

Learning Objectives

• Compare hypothesis-driven, descriptive, and correlational inquiry models in scientific explanations.
• Identify boundary conditions, assumptions, and testable predictions in different models.
• Understand how empirical evidence, conceptual and mathematical representations refine scientific models.+ Show more

Learning Objectives

• Understand the forces of friction and fluid drag and how they oppose motion.
• Identify factors affecting resistive forces such as surface types, shape, and speed.
• Explain how resistive forces convert mechanical energy into thermal energy.+ Show more

Learning Objectives

• Explain how atomic bonding and molecular structure relate to observable substance properties.
• Use particle models to predict patterns in melting/boiling state, solubility, and reactivity trends.
• Differentiate properties of polar and nonpolar substances and of extended structures such as polymers and crystals.+ Show more

Learning Objectives

• Describe how indicator properties (pH, electrical conductivity, density, and refractive index) can change during chemical reactions.
• Explain why changes in indicator properties provide evidence for formation of new substances.
• Distinguish chemical change from physical mixing using measured indicator property shifts.+ Show more

Learning Objectives

• Identify the structure and function of alveoli
• Understand how alveoli contribute to gas exchange
• Recognize the importance of surface area and thin surfaces in respiration

Learning Objectives

• Use balanced-equation ratios to predict relative masses of reactants and products.
• Explain how mass conservation helps interpret changes in a closed system.
• Compare expected theoretical amounts to observed residue in controlled reactions.+ Show more

Learning Objectives

• Identify gravitational, elastic, and magnetic forms of stored energy
• Explain how position affects gravitational potential energy
• Describe how deformation affects elastic potential energy+ Show more

Learning Objectives

• Understand the stages of cellular energy production including glycolysis, Krebs cycle, and oxidative phosphorylation.
• Explain the role of mitochondria, membrane-based proton gradients, and chemiosmosis in ATP synthesis.
• Differentiate between aerobic and anaerobic metabolic pathways and their efficiency.+ Show more

Learning Objectives

• Describe the main stages of aerobic respiration (glycolysis, Krebs cycle, and oxidative phosphorylation) and where they occur in cells.
• Explain how mitochondria, electron transport, and proton gradients contribute to ATP production through chemiosmosis.
• Compare aerobic energy yield to anaerobic fermentation and relate both to oxygen availability and tissue energy needs.

Learning Objectives

• Explain the stages of cellular energy production including glycolysis, Krebs cycle, and oxidative phosphorylation.
• Compare aerobic and anaerobic energy pathways and their efficiencies.
• Describe the role of mitochondria and membrane proton gradients in ATP synthesis.+ Show more

Learning Objectives

• Identify the parts of an atom and explain how their charges relate to overall atomic structure.
• Distinguish elements from compounds using atomic/chemical formula evidence.
• Use simple models to connect atomic arrangement to macroscopic properties of pure substances versus mixtures.

Learning Objectives

• Describe the relationship between energy transferred, material type, and temperature change using the concept of specific heat capacity.
• Calculate and compare temperature responses of different materials given equal energy input based on their heat capacities.
• Explain how microscopic particle kinetic energy relates to macroscopic temperature measurements during thermal processes.+ Show more

Learning Objectives

• Understand the principle of mass conservation in chemical reactions within closed systems.
• Analyze how mass relationships between reactants and products are maintained in various chemical processes.
• Differentiate between open and closed systems in the context of matter conservation.+ Show more

Learning Objectives

• Describe the different drivers influencing global temperature changes, including greenhouse gases, volcanic activity, solar variability, and climate feedbacks.
• Interpret evidence from paleoclimate and modern datasets to assess natural versus anthropogenic influences on climate change.
• Formulate testable questions and evaluate multiple lines of evidence related to climate drivers.+ Show more

Learning Objectives

• Define dynamic and kinematic viscosity and understand their significance in fluid flow.
• Compare low-viscosity fluids like water with high-viscosity oils in terms of flow characteristics.
• Understand the relationship between viscosity and flow rate in pipes, including qualitative references to Poiseuille's law.+ Show more

Learning Objectives

• Identify key features of the solar system and the evidence supporting their characteristics.
• Explain how planetary compositions, densities, and surface features relate to planetary history.
• Analyze orbital patterns and their implications for planetary formation and evolution.+ Show more

Learning Objectives

• Identify and differentiate between kinetic and potential energy in objects
• Describe how energy is stored in springs and elevated masses
• Understand the conversion pathways between potential and kinetic energy+ Show more

Learning Objectives

• Explain how diffusion moves substances across a cell membrane based on concentration differences
• Compare passive transport and active transport in terms of energy use and direction
• Describe how membranes regulate entry of nutrients and removal of waste to maintain internal balance

Learning Objectives

• Distinguish between mixtures and compounds based on their properties and formation.
• Identify methods to separate mixtures and compounds physically and chemically.
• Explain the significance of understanding the differences for scientific and practical applications.

Learning Objectives

• Understand the concept of cell specialization and its importance in biology.
• Identify different types of specialized cells and their unique structures.
• Explain how structural modifications support specific cellular functions.+ Show more