Grade 8 Science Worksheets

Learning Objectives

• Explain how passive transport (diffusion, osmosis, and facilitated diffusion) differs from active transport across cell membranes.
• Describe how concentration gradients and membrane properties affect the rate of net movement.
• Distinguish between membrane transport mechanisms and bulk transport processes (endocytosis and exocytosis).+ Show more

Learning Objectives

• Understand the fundamental principles of different microscopy techniques.
• Describe how magnification, resolution, and contrast affect microscopic imaging.
• Differentiate between light microscopy, stereomicroscopy, and electron microscopy.+ 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 the Earth's rotation and its effects on day and night.
• Recognize the causes of seasonal changes due to Earth's axial tilt.
• Explain the difference between Earth's rotation and revolution.+ Show more

Learning Objectives

• Explain how work is calculated as the force component along displacement
• Use the work–energy theorem to connect work done to changes in kinetic energy
• Calculate work for constant and variable forces using appropriate reasoning+ Show more

Learning Objectives

• Explain how particle-level models show atoms and molecules rearranging during chemical reactions while conserving atoms.
• Use particle diagrams to interpret bond breaking and bond forming without changing which elements are present.
• Connect macroscopic changes (like mass and properties) to rearrangements of the same set of particles.

Learning Objectives

• Understand the historical development of cell theory and its core principles.
• Describe the importance of cells as the basic units of life and how they arise.
• Connect microscopic evidence and modern imaging techniques to cell theory principles.+ Show more

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

• Identify and compare fixed, movable, and compound pulley arrangements in terms of effort direction and mechanical advantage
• Calculate ideal mechanical advantage from the number of supporting rope segments and explain how real-world losses reduce performance
• Describe how rope tension is distributed across multiple pulley segments and how input force relates to load and displacement

Learning Objectives

• Understand the key components of watershed and drainage basin systems.
• Identify features such as tributaries, lakes, wetlands, and floodplains.
• Explain how land cover, slope, and soil type influence runoff and infiltration.+ 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 forces can change an object’s motion, including starting, stopping, and changing direction
• Describe how net force (the overall force) affects acceleration and motion over time
• Use magnitude and direction to predict how motion will change in real-life situations

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

• Explain how the hydrologic cycle connects to water availability in a regional basin
• Analyze watershed connectivity, groundwater–surface exchange, and contaminant or nutrient sources
• Evaluate how governance and monitoring strategies influence water-quality outcomes

Learning Objectives

• Describe chloroplast structure and identify where light-dependent reactions and the Calvin cycle occur
• Explain how the production of ATP and NADPH supports carbon fixation and biomass synthesis
• Compare photosynthetic capacity between different plant cell types and algal cells and predict how environment affects photosynthesis

Learning Objectives

• Explain how scientific claims are strengthened by quality evidence and consistent patterns.
• Distinguish between direct observations, measurements, and evidence from models.
• Evaluate whether an explanation is evidence-based rather than based on a single result or bias.

Learning Objectives

• Explain how gravity governs the motion of celestial bodies within the solar system and galaxies.
• Describe the concept of orbital trajectories and the balance between inertia and gravity.
• Identify observable manifestations of gravitational principles such as planetary paths and comet trajectories.+ Show more

Learning Objectives

• Analyze datasets related to earthquakes, volcanoes, tsunamis, and faults to understand recurrence intervals and spatial distribution.
• Interpret seismic, paleoseismic, geodetic, and tsunami data to evaluate hazard likelihood and potential impacts.
• Assess the role of monitoring technologies and modeling methods in forecasting natural hazards and guiding mitigation efforts.+ Show more

Learning Objectives

• Identify observable clues that indicate whether a change is physical or chemical.
• Differentiate between physical and chemical changes based on observable indicators.
• Understand properties like melting point, solubility, and conductivity during different types of changes.+ Show more

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 DNA sequences determine protein structure and observable traits.
• Describe the processes of transcription and translation in gene expression.
• Analyze how mutations such as point mutations and frameshifts can alter amino acid sequences and affect proteins.+ Show more

Learning Objectives

• Understand how to design simple investigations addressing real-world phenomena.
• Learn to identify appropriate variables, measurements, and data collection methods.
• Analyze and interpret data using graphical and statistical summaries.+ Show more

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

• Explain how engineering design problems are framed using desired outcomes, context, and measurable goals.
• Identify constraints and requirements and distinguish them from solution ideas.
• Generate and justify multiple solution approaches that meet the same goal while considering limitations.

Learning Objectives

• Understand the basic principles of hydraulic systems based on Pascal's law.
• Explain how input force and piston area affect output force in hydraulic devices.
• Identify applications of hydraulic transmission in everyday machinery such as jacks and brakes.+ Show more

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

• Describe the major parts of cells and explain what each part does.
• Compare prokaryotic and eukaryotic cells based on their internal structures.
• Relate organelles to functions such as energy transformation and information storage.+ Show more

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

• Identify and describe key physical properties of matter such as density, solubility, melting point, boiling point, electrical and thermal conductivity.
• Compare how different materials behave based on their physical properties.
• Understand how physical properties help classify and separate substances.+ Show more

Learning Objectives

• Describe how momentum is exchanged during collisions.
• Distinguish between elastic and inelastic collisions based on energy conservation.
• Apply the principles of momentum and impulse to real-world collision scenarios.+ Show more

Learning Objectives

• Understand the characteristics of drainage basins and watershed boundaries.
• Explain how land cover, slope, and soil type influence runoff and infiltration.
• Identify storage elements like lakes and wetlands that modulate flow regimes.+ Show more

Learning Objectives

• Understand the causes and types of faults related to seismic activity.
• Identify how seismic waves propagate and affect Earth's crust.
• Differentiate between seismic intensity and magnitude and interpret seismic records.+ 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

• Explain how hydrostatic pressure depends on depth and fluid density using p = ρgh
• Describe how pressure differences occur in liquids and how that relates to communicating vessels
• Solve word problems to calculate pressure at different depths in a fluid

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

• Define the criteria and constraints for engineering problems.
• Identify measurable performance goals, material and cost limits, safety, and environmental considerations.
• Analyze trade-offs among time, cost, and durability in engineering scenarios.+ 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

• Explain the conservation of mass during chemical reactions in a closed system.
• Interpret balanced chemical equations as evidence that atoms are conserved.
• Use mass and mole ideas to connect macroscopic measurements to particle quantities.

Learning Objectives

• Explain the relationship between fluid speed and pressure in Bernoulli's principle.
• Derive the energy conservation relation for incompressible flow.
• Apply Bernoulli's principle to analyze lift in airfoils and flow in constricted pipes.+ Show more

Learning Objectives

• Understand the ways human activities impact Earth's systems, particularly water resources.
• Identify cause-and-effect relationships related to water use and environmental change.
• Analyze how increased resource demand can lead to ecological and environmental consequences.

Learning Objectives

• Understand the structural and functional relationships of cellular organelles.
• Interpret models of membrane processes such as diffusion, osmosis, and transport.
• Connect cellular structures to their roles in cell viability and energy pathways.+ 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