Grade 8 Science Worksheets

Learning Objectives

• Explain how heat is transferred through conduction, convection, and radiation.
• Understand the concept of specific heat capacity and how it affects temperature change.
• Relate microscopic particle motion to macroscopic temperature measurements.+ Show more

Learning Objectives

• Describe the process of energy transfer through mechanical systems such as gears, pulleys, and hydraulic elements.
• Analyze how energy is converted at different points within coupled energy systems including identifying losses and efficiencies.
• Calculate the net useful energy transfer in complex systems like motor-driven conveyors and pump–actuator setups.+ Show more

Learning Objectives

• Define and distinguish between dynamic and kinematic viscosity.
• Explain how viscosity affects the flow of fluids in pipes and channels.
• Contrast the flow behavior of low-viscosity fluids like water with high-viscosity fluids like oils.+ Show more

Learning Objectives

• Understand the concept of power as energy transfer per unit time.
• Identify factors affecting the efficiency of electrical devices.
• Analyze mechanisms of power loss such as resistive heating and transmission dissipation.+ Show more

Learning Objectives

• Explain how primary producers convert energy into organic matter and support food webs
• Describe factors that influence primary productivity, including light and soil nutrients
• Compare land producers (grasses, shrubs, boreal trees) and aquatic producers (algae) in Alberta food chains+ Show more

Learning Objectives

• Understand the role of fossils in revealing Earth's history
• Identify different types of fossils
• Explain how fossils support the theory of evolution+ Show more

Learning Objectives

• Understand the mechanisms of surface water and groundwater interactions.
• Identify factors influencing exchange rates such as permeability, hydraulic gradients, and recharge zones.
• Explain how river stage and seasonal variability affect surface exchanges.+ Show more

Learning Objectives

• Define homeostasis and explain its significance in living organisms.
• Identify key feedback mechanisms involved in maintaining internal stability.
• Describe examples of homeostatic control systems in the human body.

Learning Objectives

• Explain how inertia affects motion when an unbalanced force acts.
• Relate net force and mass to an object's acceleration.
• Identify equal-and-opposite forces acting on different objects.+ Show more

Learning Objectives

• Distinguish descriptive observations from numerical measurements with units
• Identify appropriate SI units for recording scientific measurements
• Calculate the mean of repeated measurements accurately+ Show more

Learning Objectives

• Explain how scientific models represent objects, systems, and processes.
• Identify limitations caused by scale, materials, and omitted features.
• Compare model predictions with observations and test results.+ Show more

Learning Objectives

• Identify how genes, DNA, and chromosomes are related.
• Explain how inherited information can influence traits in offspring.
• Distinguish inherited tendencies from guaranteed observable characteristics.+ Show more

Learning Objectives

• Identify major structures found in plant and animal cells.
• Explain how cell structures support essential cellular functions.
• Compare plant and animal cells using structural examples.+ Show more

Learning Objectives

• Identify investigable questions that can be answered with evidence
• Compare descriptive, comparative, and experimental investigation approaches
• Select suitable tools and safety practices for investigation plans+ Show more

Learning Objectives

• Explain how cohesion keeps water molecules attracted to one another.
• Compare cohesion and adhesion using observations of water and surfaces.
• Describe how surface tension affects water at its surface.+ Show more

Learning Objectives

• Explain how warm ocean water supplies heat and moisture.
• Describe how rising moist air contributes to cyclone organization.
• Explain how condensation releases energy during storm development.+ Show more

Learning Objectives

• Identify observations used to develop models of cosmic origins
• Explain how redshift supports models of cosmic development
• Connect cosmic background radiation with early-universe conditions+ Show more

Learning Objectives

• Identify interacting parts and flows in a system diagram.
• Explain how a structure supports the function of a system part.
• Predict how changing one condition affects system behavior.+ Show more

Learning Objectives

• Classify water-based samples as acidic, neutral, or basic using pH evidence.
• Interpret pH values using 7 as the neutral reference point.
• Explain how indicators reveal chemical conditions through colour changes.+ Show more

Learning Objectives

• Explain how fossil-fuel emissions affect atmospheric carbon dioxide.
• Describe how deforestation changes carbon dioxide removal by trees.
• Explain why urban surfaces can create local temperature differences.+ Show more

Learning Objectives

• Compare spiral, elliptical, and irregular galaxies using observable features
• Describe the relationship between Earth, the solar system, and the Milky Way
• Explain how viewing angle affects visible galaxy structures+ Show more

Learning Objectives

• Interpret surface temperature and brightness on an H–R diagram
• Distinguish diagram position from a star’s location in space
• Explain how initial stellar mass influences life-cycle pathways+ Show more

Learning Objectives

• Explain how mathematical methods and evidence contribute to innovation.
• Compare sources using authorship, evidence, methods, and purpose.
• Evaluate benefits and costs associated with new technologies.+ Show more

Learning Objectives

• Explain how inherited variation affects survival and reproduction.
• Distinguish structural, behavioral, and physiological adaptations.
• Compare inherited adaptations with temporary individual responses.+ Show more

Learning Objectives

• Identify amplitude, frequency, and wavelength on transverse-wave models.
• Calculate frequency using cycle counts and wave periods.
• Distinguish spatial graphs from time graphs using their axes.+ Show more

Learning Objectives

• Compare electromagnetic waves by wavelength, frequency, and application.
• Explain how electromagnetic radiation interacts with different materials.
• Identify suitable electromagnetic waves for common technological applications.+ Show more

Learning Objectives

• Explain why total mass remains constant in a closed reaction system.
• Describe how atoms rearrange to form new substances.
• Interpret atom models as evidence for conservation of mass.+ Show more

Learning Objectives

• Compare primary and secondary succession using soil conditions.
• Explain how disturbances can change populations within an ecosystem.
• Describe how producer loss can affect energy flow in food webs.+ Show more

Learning Objectives

• Classify particle models as elements, compounds, or mixtures.
• Distinguish uniform mixtures from nonuniform mixtures using particle distribution.
• Identify elements using periodic-table symbols in reaction representations.+ Show more

Learning Objectives

• Distinguish a testable hypothesis from a scientific theory and law.
• Explain how evidence supports, weakens or revises scientific explanations.
• Identify claims, evidence and reasoning in scientific arguments.+ Show more

Learning Objectives

• Identify carbon reservoirs and transfers in Earth systems.
• Trace carbon movement among organisms, air, water, and Earth materials.
• Explain how transfer rates change carbon stored in reservoirs.+ Show more

Learning Objectives

• Calculate acceleration using net force and mass.
• Explain how net force changes acceleration when mass stays constant.
• Compare acceleration for objects with different masses.+ Show more

Learning Objectives

• Identify natural processes that influence Earth's climate.
• Explain how volcanic particles can temporarily reduce surface heating.
• Compare climate effects associated with volcanic eruptions and ocean currents.+ Show more

Learning Objectives

• Identify patterns and trends in scientific observations.
• Distinguish associations from evidence of cause and effect.
• Explain how controlled variables support fair investigations.+ Show more

Learning Objectives

• Explain how uneven solar heating contributes to atmospheric circulation
• Describe how air density changes influence vertical air movement
• Identify how evaporation and condensation transfer water through the atmosphere+ Show more

Learning Objectives

• Understand the principles of conduction, convection, and radiation in thermal transfer.
• Identify strategies for minimizing or maximizing heat flow in various systems.
• Explain how material properties, geometry, and contact area influence thermal energy exchange.+ Show more

Learning Objectives

• Explain how friction is a contact force that opposes relative motion between surfaces
• Describe how friction depends on surface roughness and the normal force
• Use friction concepts to predict and compare real-world outcomes (braking, sliding, sledding)

Learning Objectives

• Identify key factors affecting blood flow in vessels
• Explain how vessel properties influence perfusion
• Describe the effects of narrowing (stenosis) on blood pressure and flow+ Show more

Learning Objectives

• Analyze patterns, frequency, and magnitude of natural hazards to inform forecasting.
• Interpret hazard data from instrumental records and historical observations.
• Evaluate techniques used in hazard mapping and risk assessment.+ Show more

Learning Objectives

• Describe how gravitational force depends on mass and distance between objects.
• Explain the inverse-square relationship governing gravitational attraction.
• Predict orbital characteristics based on mass and distance parameters.+ Show more

Learning Objectives

• Understand the purpose and components of ecosystem models illustrating matter and energy flow.
• Identify key conventions and symbols used in ecosystem modeling diagrams and flow charts.
• Interpret model outputs, recognize assumptions and limitations, and connect model components to observable ecosystem features.

Learning Objectives

• Understand the processes involved in gas exchange in organisms.
• Identify key structures involved in respiration and photosynthesis.
• Explain how structure relates to function in gas exchange surfaces.+ Show more

Learning Objectives

• Analyze scale relationships among solar system objects using quantitative data.
• Interpret patterns in diameters, masses, distances, and orbital periods of planets and moons.
• Use astronomical units and relative scaling to compare celestial objects.+ Show more

Learning Objectives

• Understand the relationship between energy transferred and temperature change in different materials.
• Explain the concept of specific heat capacity and how it influences thermal response.
• Apply calorimetric reasoning to compare thermal behaviors of water, aluminum, and steel.+ Show more

Learning Objectives

• Understand the basic structure and function of DNA
• Explain how DNA sequences determine traits
• Describe the processes of transcription and translation+ Show more

Learning Objectives

• Understand the basic components and functions of cell organelles
• Compare prokaryotic and eukaryotic cells
• Differentiate between single-celled and multicellular organisms+ Show more

Learning Objectives

• Describe the atomic composition of simple molecules using particle models and symbolic formulas.
• Interpret molecule diagrams and structural models to understand atom types, numbers, and bonding arrangements.
• Differentiate between discrete molecules and extended solids based on microscopic arrangements and observable properties.+ Show more

Learning Objectives

• Understand and identify observable indicators of chemical change such as color change, gas production, precipitate formation, and temperature change.
• Analyze qualitative and quantitative data from various reactions like metal corrosion, combustion, and acid-base interactions.
• Differentiate chemical transformations from physical mixing based on macroscopic evidence.+ Show more