Grade 8 Worksheets

Learning Objectives

• Explain how Earth’s rotation causes the pattern of day and night
• Describe how Earth’s revolution and 23.5° axial tilt produce seasons and changes in daylight
• Connect equinoxes and solstices to measurable changes in sunrise/sunset timing and solar altitude

Learning Objectives

• Understand the ecological impacts of invasive plants and aquatic organisms in Alberta.
• Identify pathways through which invasive species spread and affect native biodiversity.
• Analyze the consequences of invasive species on hydrology and food web structure.+ Show more

Learning Objectives

• Use conservation of mechanical energy to relate gravitational potential energy and kinetic energy in near-ideal situations
• Explain how friction and air resistance change mechanical energy into thermal energy
• Calculate and compare speeds and heights using mgh and (1/2)mv^2 relations

Learning Objectives

• Explain how biotechnological methods such as cell culture and controlled differentiation can be used to develop specialized cell types.
• Describe how scaffold interactions support tissue engineering and influence tissue repair outcomes.
• Identify key molecular markers used to monitor stem cell differentiation and discuss why safety and regulation matter.

Learning Objectives

• Understand how particle diagrams depict atoms and molecules during reactions.
• Identify how bond changes are illustrated at the particle level.
• Explain how atomic rearrangements lead to observable properties and mass conservation.+ Show more

Learning Objectives

• Compare epithelial, connective, muscle, and nervous tissues by cellular features and specialized structures.
• Explain how extracellular matrix and cell junctions support tissue function.
• Describe structural-functional relationships in muscle contraction and nervous signal transmission.+ Show more

Learning Objectives

• Understand how to predict products of chemical reactions based on reactant identities and reaction patterns.
• Apply conservation of atoms to balance chemical equations and determine possible products.
• Use stoichiometry to convert between masses and moles for estimating reaction yields.+ Show more

Learning Objectives

• Explain how hydraulic systems transmit force using Pascal’s principle and fluid pressure.
• Use the relationship between pressure, force, and piston area to predict force multiplication.
• Describe how incompressible fluid allows remote force application and discuss real-system losses and seal integrity.

Learning Objectives

• Identify first-, second-, and third-class levers based on the positions of the fulcrum, input force, and output force.
• Calculate ideal mechanical advantage using perpendicular distances from the fulcrum and interpret what the result means for forces and motion.
• Use moment (turning) balance to connect input and output forces in lever equilibrium.+ Show more

Learning Objectives

• Distinguish literal, stated evidence from background knowledge and speculation
• Select and match evidence (quoted or paraphrased) to support a claim or summary
• Use exact wording from a source to resolve multiple possible interpretations

Learning Objectives

• Describe how particles in solids, liquids, and gases differ in arrangement and motion.
• Explain how microscopic particle behaviour affects observable properties like rigidity, flow, and compressibility.
• Connect real-world examples such as frozen rivers and prairie fog to particle theory concepts.+ Show more

Learning Objectives

• Understand the energy transformation between potential and kinetic energy in a pendulum.
• Identify factors that influence the period and energy distribution of a pendulum.
• Explain how energy conservation is observed in ideal pendulum systems.+ Show more

Learning Objectives

• Identify independent, dependent, and controlled variables in an applied investigation and explain why controlling variables improves fairness.
• Design a comparative procedure that includes baseline/control conditions and repeated trials to improve data reliability.
• Use graphs and simple statistical summaries to support conclusions and communicate results transparently and safely.

Learning Objectives

• Understand how simple machines redirect forces and transfer energy.
• Identify different types of simple machines such as levers, pulleys, and gears.
• Explain the concept of mechanical advantage and energy conservation in simple systems.+ Show more

Learning Objectives

• Understand the principles of conservation of mass in closed and open systems.
• Apply quantitative methods to track reactant and product masses in chemical reactions.
• Convert measured masses to moles and use balanced equations to verify mass conservation.+ Show more

Learning Objectives

• Understand how climate variation influences ecosystems and biodiversity.
• Identify the impacts of climate change on species ranges, phenology, and ecosystem interactions.
• Analyze how climate drivers affect habitat suitability and species distribution.+ Show more

Learning Objectives

• Understand how major organ systems work together to maintain body functions.
• Identify the roles of the circulatory, respiratory, digestive, nervous, and endocrine systems.
• Explain how internal processes coordinate to support movement, digestion, and regulation.+ Show more

Learning Objectives

• Understand the ecological traits that enable invasive species to spread and outcompete native species.
• Identify pathways and impacts of invasive species on ecosystems.
• Analyze community susceptibility and factors influencing invasion success.+ Show more

Learning Objectives

• Understand the different forms of mechanical energy such as kinetic and potential energy.
• Explain how energy transfers occur when forces do work, such as objects falling.
• Recognize how friction and air resistance convert mechanical energy into thermal energy.+ Show more

Learning Objectives

• Understand the differences between physical and chemical changes at the particle level.
• Identify observable indicators of chemical change such as gas production, color change, or precipitate formation.
• Distinguish between physical and chemical changes based on evidence and outcomes.+ Show more

Learning Objectives

• Understand how genetic variation arises from different processes.
• Identify the role of mutations and gene combinations in producing variation.
• Explain how variation affects survival and reproduction in populations.+ Show more

Learning Objectives

• Explain how igneous, sedimentary, and metamorphic rocks connect through the rock cycle.
• Describe how weathering, erosion, deposition, heat, and pressure change Earth materials.
• Connect rock-cycle processes to tectonic plate movement and long time scales.

Learning Objectives

• Identify different types of evidence supporting the theory of evolution.
• Explain how fossil records, structural similarities, and genetic differences provide evidence for natural selection.
• Describe how environmental pressures influence which traits become more common in a population.

Learning Objectives

• Understand how to analyze motion composed of multiple segments with different speeds.
• Apply proportional reasoning to compute average speed from total distance and total time.
• Recognize how slow and fast segments influence overall average speed in nonuniform motion.+ Show more

Learning Objectives

• Understand the principle of conservation of mass in closed systems during chemical reactions.
• Identify experimental methods that demonstrate mass conservation in laboratory settings.
• Explain how measurements before and after reactions support conservation principles.+ Show more

Learning Objectives

• Describe how Earth’s major plates move and how these motions change landforms over geologic time.
• Explain how plate boundaries (divergent, convergent, and transform) relate to earthquakes, volcanoes, mountains, and trenches.
• Use evidence such as matching coastlines, seafloor features, and earthquake locations to support the theory of plate tectonics.

Learning Objectives

• Explain how divergent, convergent, and transform plate boundaries reshape Earth’s surface.
• Describe how plate boundaries relate to earthquakes and volcanism.
• Interpret patterns in topography by connecting them to long-term tectonic processes.

Learning Objectives

• Explain how particle rearrangement accounts for observable outcomes of chemical reactions.
• Connect changes in energy with temperature changes in the surrounding environment.
• Use evidence from reaction observations (like gas formation and warming) to infer particle and energy changes.

Learning Objectives

• Explain how fixed, movable, and compound pulley systems affect force and motion
• Calculate ideal mechanical advantage using the number of rope segments supporting a moving pulley block
• Describe how friction and rope stretch reduce mechanical advantage compared to ideal systems+ Show more

Learning Objectives

• Explain Newton’s three laws of motion and connect each law to everyday cause-and-effect situations.
• Use Newton’s second law (F = ma) to calculate how force, mass, and acceleration relate in single-object systems.
• Analyze action–reaction pairs in two-object interactions, including push–pull linkages and wheel–axle mechanisms.

Learning Objectives

• Trace how energy moves through a system that includes mechanical components (gears, pulleys, hydraulic elements).
• Identify where energy conversion happens and where losses occur at interfaces between components.
• Calculate net useful energy transfer to a load and interpret how losses affect performance and reliability.

Learning Objectives

• Explain how genetic instructions determine observable traits (phenotypes).
• Use dominant and recessive patterns to predict why traits appear or skip generations.
• Identify evidence for heredity by relating organism relatedness, phenotypic similarity, and mutations to traits.

Learning Objectives

• Explain how reproductive isolation can lead to speciation
• Describe how natural selection and genetic variation affect diverging populations
• Identify ways geography, habitat change, and behavior can contribute to isolation+ Show more

Learning Objectives

• Explain how organ systems work together to maintain homeostasis in the human body.
• Compare the roles of major organ systems, including respiratory, circulatory, and nervous systems.
• Use system-level ideas to describe how signals and transport processes respond to changing conditions.

Learning Objectives

• Calculate average speed for trips with multiple motion segments using total distance and total time
• Use proportional reasoning to connect segment distance, segment time, and overall trip averages
• Explain why slower segments can reduce average speed more than faster segments increase it+ Show more

Learning Objectives

• Identify major organelles and describe the roles they play in cell processes
• Explain how differences in organelle structure and abundance relate to cell function
• Connect organelle specialization to how tissues and organs perform their jobs

Learning Objectives

• Use conservation of atoms to predict which substances form in a chemical reaction
• Write and interpret balanced chemical equations to determine product identities
• Convert between mass and moles to estimate relative amounts and yields

Learning Objectives

• Explain how indicator properties (pH, electrical conductivity, density, and refractive index) can change during chemical reactions.
• Distinguish chemical changes from physical changes using evidence from measured property shifts.
• Interpret indicator evidence to infer whether new substances (such as ions) are formed.

Learning Objectives

• Identify and distinguish major types of species interactions: predation, competition, parasitism, mutualism, and commensalism
• Explain how species interactions can affect population sizes and community structure
• Use evidence from examples to describe how resource competition and interdependence shape ecological balance+ Show more

Learning Objectives

• Explain how birth rate, death rate, immigration, and emigration affect population growth patterns.
• Describe how intrinsic and extrinsic factors influence population change over time.
• Use population counts and basic demographic ideas to interpret growth, stability, and decline.

Learning Objectives

• Distinguish physical change from chemical change using evidence at the particle level.
• Explain how chemical indicators provide observable evidence that a new substance may be forming.
• Use indicator results (color, gas, precipitate) to make claims about chemical reactions.

Learning Objectives

• Distinguish physical changes from chemical changes using observable evidence
• Identify common evidence of chemical reactions such as gas formation, precipitate, temperature change, and color change
• Explain why irreversible changes usually indicate a chemical change

Learning Objectives

• Explain how submarine ballast tanks change buoyancy by adjusting displaced volume and internal mass
• Identify conditions for neutral buoyancy and describe what happens when water is taken in or ejected
• Use simple calculations involving tank volume, fluid density, and net buoyant force to predict buoyancy changes+ Show more

Learning Objectives

• Identify multiple lines of evidence that support the idea that Earth’s lithospheric plates have moved over long periods of time.
• Explain how geologic patterns such as rock age, mountain belt alignment, and seafloor features relate to past plate motion.
• Interpret statements about plate boundaries and Earth history as true or false based on scientific evidence.

Learning Objectives

• Explain how earthquake locations form belts that relate to tectonic plate boundaries
• Describe how seismic wave observations provide indirect evidence about Earth’s internal structure
• Use evidence from seismic timing and wave behavior to connect tectonic motion to patterns of earthquakes and volcanic activity

Learning Objectives

• Explain how biotic interactions (predation, competition, disease, and mutualism) influence population sizes.
• Describe how changes in populations can affect energy flow and matter cycling in an ecosystem.
• Use evidence from a text to identify main ideas and make claims supported by ecological concepts.

Learning Objectives

• Explain how genes and alleles influence inherited traits in offspring.
• Differentiate dominant and recessive alleles using allele-pair outcomes.
• Use evidence from observed variation to justify that inherited factors affect survival and reproduction.

Learning Objectives

• Explain how pollution alters ecosystem chemistry and disrupts nutrient cycles.
• Describe how excess nutrients can lead to eutrophication and algal blooms.
• Identify how persistent contaminants bioaccumulate through food webs and affect organisms.+ Show more