Grade 8 Science Worksheets

Learning Objectives

• Use particle models to describe how chemical reactions rearrange atoms into new bonded substances
• Explain how particle counts and bond changes in a model match observed evidence (color, gas, temperature)
• Interpret energy models to determine whether a reaction is exothermic or endothermic

Learning Objectives

• Compare plant and animal cell structures and explain how those structures affect cell functions.
• Explain how chloroplasts, cell walls, vacuoles, plasmodesmata, centrioles, and lysosomes contribute to different survival strategies.
• Contrast prokaryotic and eukaryotic cell organization and relate differences to metabolic capabilities.

Learning Objectives

• Explain how engineering models connect inputs to expected outputs.
• Describe how model predictions are compared with prototype or measurement data.
• Use evidence to justify how a model is adjusted to improve design refinement.

Learning Objectives

• Identify the role of producers in ecosystems
• Understand how energy is captured and transferred through food chains
• Explain the concept of energy pyramids and trophic levels+ Show more

Learning Objectives

• Analyze the principles of mechanical energy conservation in near-ideal systems.
• Understand energy conversions between gravitational potential and kinetic energy.
• Recognize energy dissipation effects like friction and air resistance affecting energy conservation.+ Show more

Learning Objectives

• Understand and explain Newton's three laws of motion in the context of mechanical systems.
• Apply the equation F = ma to analyze forces and resulting accelerations in single- and two-object systems.
• Identify cause-and-effect relationships between forces, mass, and acceleration in various mechanisms.+ Show more

Learning Objectives

• Explain how energy moves through trophic levels in one direction from the Sun to producers and consumers
• Describe why energy decreases at each trophic level and why this limits population sizes
• Use food chains and food webs to show multiple pathways for energy flow+ Show more

Learning Objectives

• Understand different types of species interactions including predation, competition, parasitism, mutualism, and commensalism.
• Describe how species interactions influence population dynamics and community structure.
• Identify examples of ecological relationships in real-world ecosystems.+ Show more

Learning Objectives

• Use quantitative relationships to explain how kinetic energy depends on mass and speed.
• Interpret graphs that show how kinetic energy changes with mass and with the square of speed.
• Analyze energy transfers between kinetic and potential energy in models such as pendulums and roller coasters.+ Show more

Learning Objectives

• Explain how introduced species can become invasive by establishing, spreading, and outcompeting native species
• Describe ecological traits and conditions that help invasive species succeed
• Evaluate ecosystem impacts of invasive species on biodiversity, nutrient cycling, and habitat structure

Learning Objectives

• Identify different types of magnetic responses in materials: diamagnetic, paramagnetic, ferromagnetic.
• Understand how microstructural properties influence magnetic behavior.
• Explain the significance of domain alignment in magnetic materials.+ Show more

Learning Objectives

• Understand the concepts of electric current and resistance and how they relate in electrical circuits.
• Identify factors that affect resistance in materials, including temperature and material properties.
• Explain how resistance impacts energy dissipation and component heating in electrical systems.+ Show more

Learning Objectives

• Use the claim–evidence–reasoning (CER) structure to communicate scientific ideas clearly and logically.
• Apply standard scientific conventions when describing measurements and interpreting data in graphs and tables.
• Use precise scientific terminology and write technically accurate, concise explanations.+ Show more

Learning Objectives

• Understand how pH levels indicate acidity or alkalinity
• Recognize changes in physical properties during chemical reactions
• Learn to interpret property shifts as evidence of chemical changes

Learning Objectives

• Explain how particle motion helps describe gas pressure and temperature
• Describe how increasing temperature changes collision frequency and collision force
• Use the particle model to justify why gas pressure does not depend on one direction of motion

Learning Objectives

• Understand the structure of DNA
• Explain the function of DNA in hereditary information
• Identify the relationship between genes, DNA, and proteins+ Show more

Learning Objectives

• Understand how mechanical and chemical processes work together in digestion.
• Identify tissue specialization along the digestive tract.
• Explain how cellular structures contribute to organ-level digestion.+ Show more

Learning Objectives

• Explain how homeostasis uses a feedback loop to maintain stable internal conditions.
• Identify the roles of receptors, control centers, and effectors in regulating a variable.
• Distinguish negative feedback from situations that do not restore balance.

Learning Objectives

• Describe how igneous, sedimentary, and metamorphic rocks form under different Earth conditions.
• Identify key mineral properties and how they relate to mineral composition.
• Explain how the rock record connects tectonic activity to Earth's long-term changes.+ Show more

Learning Objectives

• Explain how the number and type of atoms in a substance affect its macroscopic properties.
• Use particle models to describe why the same element can form different structures with different behaviors.
• Distinguish between atomic arrangement, bonding/structure, and observed properties such as conductivity, brittleness, and melting point.

Learning Objectives

• Explain how submarine ballast tanks control buoyancy by changing displaced volume and internal mass
• Describe neutral buoyancy and how it helps submarines maintain depth while submerged
• Use density and buoyant force ideas to interpret how intake/ejection of water affects motion+ Show more

Learning Objectives

• Explain why scientific theories can change when new evidence or better measurement becomes available
• Describe how scientists evaluate competing explanations using the quality and consistency of evidence
• Use examples to identify predictions made by theories and explain how theories are revised

Learning Objectives

• Identify parts of a model and explain what they represent.
• Use model components to describe interactions within a system.
• Distinguish between a model and real-world behavior.

Learning Objectives

• Understand how tissue composition relates to the function of major organ systems.
• Identify key features of the circulatory, respiratory, and digestive systems.
• Explain how specialized tissues form organs that coordinate physiological roles.+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Interpret a distance-time graph by using the slope to determine speed.
• Use two points on a distance-time graph to calculate average speed over a time interval.
• Analyze piecewise motion by comparing different segments to identify constant, increasing, or decreasing speed.

Learning Objectives

• Understand the concept of tradeoff analysis in engineering decisions.
• Learn how to apply multi-criteria decision making methods.
• Identify factors affecting material selection for bridge construction.+ Show more

Learning Objectives

• Describe how voltage, current, and resistance are measured using common meters in an electrical circuit.
• Choose correct meter ranges and connections to avoid inaccurate readings.
• Explain how meter impedance (resistance of the meter) can affect measured values.

Learning Objectives

• Understand how natural resources are transformed into synthetic materials.
• Identify the properties of materials based on their source and processing.
• Compare natural and synthetic materials in terms of properties and environmental impact.+ Show more

Learning Objectives

• Understand how kinetic and potential energy depend on mass, speed, and position.
• Interpret graphs relating kinetic energy to mass and speed squared.
• Analyze energy interchange in systems like pendulums and roller-coasters.+ Show more

Learning Objectives

• Understand how population growth influences resource use and environmental change.
• Analyze links between demographic patterns, consumption, and Earth system impacts.
• Evaluate cause–effect relationships involving land cover, greenhouse gases, and ecosystems.+ Show more

Learning Objectives

• Understand the development and evaluation of multiple design concepts based on criteria and constraints.
• Differentiate solutions using sketches, trade-off matrices, and qualitative versus quantitative assessments.
• Analyze how functional requirements align with feasible materials and document benefits and limitations.+ Show more

Learning Objectives

• Describe how energy exchange causes matter to change between solid, liquid, and gas during phase transitions.
• Identify examples of melting, freezing, vaporization, and condensation in everyday Alberta contexts.
• Explain how pressure and energy changes affect particle arrangement and phase behavior.+ Show more

Learning Objectives

• Describe how predation, competition, mutualism, and parasitism affect survival and reproduction
• Explain how interactions between species can change population size over generations
• Use evidence from a passage to identify relationships that increase or decrease survival+ Show more

Learning Objectives

• Interpret natural hazard data using earthquake catalogs, fault maps, and eruption histories to understand patterns over time and space.
• Explain how paleoseismology, satellite geodesy, and tsunami records help estimate recurrence intervals and hazard likelihood.
• Use statistical and geospatial reasoning to describe potential impacts and evaluate engineering, land-use, and early-warning choices.

Learning Objectives

• Identify measurable physical properties of matter, including density, solubility, melting point, boiling point, and conductivity.
• Compare substances using quantitative information such as mass, volume, and temperature.
• Explain how physical properties help classify and separate materials in lab and everyday situations.

Learning Objectives

• Explain how energy is transferred between trophic levels and why energy decreases at each step.
• Use typical efficiency ranges to estimate how much energy becomes available to higher trophic levels.
• Describe how energy availability influences biomass pyramids, population sizes, and biodiversity in different ecosystems.

Learning Objectives

• Explain how energy transfer is involved in phase changes such as melting, freezing, evaporation, and condensation.
• Describe particle-level arrangements and motion during different phase changes.
• Use evidence from everyday examples (ice melting, water droplets forming) to identify the phase change occurring.

Learning Objectives

• Distinguish short-term weather patterns from long-term climate patterns using data records
• Interpret graphs and summary statistics to identify variability versus change over time
• Explain how precipitation, temperature, and storm frequency can differ from day-to-day to decade-to-decade

Learning Objectives

• Explain why scientists compare multiple lines of evidence when evaluating changes in global temperature over time.
• Distinguish between natural and anthropogenic climate drivers (greenhouse gases, volcanic aerosols, and solar variability).
• Describe how climate feedbacks can amplify or reduce warming and why models are used to test hypotheses.

Learning Objectives

• Understand the functions of different organ systems in maintaining homeostasis.
• Identify how organ systems collaborate to support survival needs like nutrient intake, gas exchange, and movement.
• Explain the relationship between structure and function in various organs.+ Show more

Learning Objectives

• Explain how thin, moist surfaces facilitate gas exchange in organisms.
• Identify structures involved in gas exchange such as alveoli and stomata.
• Describe how cellular adaptations support efficient diffusion of gases.+ Show more

Learning Objectives

• Explain how diffusion drives gas exchange between the environment and internal fluids.
• Describe how thin, moist surfaces and large surface area increase the rate of gas exchange.
• Identify gas-exchange adaptations in lungs and leaves and relate them to function.

Learning Objectives

• Understand how to define criteria and constraints for engineering problems.
• Identify measurable performance goals, safety, and environmental considerations.
• Analyze trade-offs among time, cost, and durability in problem scenarios.+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Understand key concepts of population dynamics including exponential growth, logistic regulation, and cyclical fluctuations.
• Link theoretical population curves to real-world case studies like snowshoe hare–lynx cycles and forest insect outbreaks.
• Explain how carrying capacity, reproductive strategies, and time lags influence population trajectories.+ Show more

Learning Objectives

• Explain how the phospholipid bilayer forms a selective barrier for cells
• Identify the roles of integral and peripheral membrane proteins in transport, signaling, and structural support
• Describe how cholesterol, carbohydrates, and membrane fluidity affect permeability and cell interactions+ Show more

Learning Objectives

• Explain Newton’s third law using action–reaction force pairs acting on two different objects
• Identify that action–reaction forces are equal in magnitude, opposite in direction, and occur at the same time
• Predict how different masses change acceleration even when force magnitudes are equal