Grade 8 Science Worksheets

Learning Objectives

• Distinguish between endothermic and exothermic reactions using energy transfer and temperature evidence
• Explain energy changes using a particle and bonding model (kinetic energy, bond breaking, and bond forming)
• Predict whether a reaction is endothermic or exothermic based on observed temperature changes

Learning Objectives

• Identify appropriate graph types (scatter plot, line graph, bar graph) for different kinds of relationships in data.
• Interpret graphs by using labeled axes, units, and consistent numerical scales to avoid misleading conclusions.
• Explain how models summarize data patterns without introducing new variables.+ Show more

Learning Objectives

• Explain how human land use and resource extraction can change habitat structure and species interactions in Alberta landscapes.
• Describe how human actions can alter nutrient cycles and water quality in river systems.
• Evaluate mitigation strategies such as reclamation, protected areas, and land-management planning.

Learning Objectives

• Describe a free-body diagram as a set of forces acting on one object
• Identify common forces (gravity, normal, friction, and applied force) and the direction of each arrow
• Use the idea of net force to reason about likely motion without heavy computation

Learning Objectives

• Identify components and interactions in a complex force system
• Differentiate internal and external forces within a system boundary
• Use force accounting to predict equilibrium or net acceleration+ Show more

Learning Objectives

• Explain how observable traits (phenotypes) are influenced by genetic instructions (genotypes)
• Describe how dominant and recessive alleles create predictable patterns across generations
• Use evidence from related organisms and mutations to support interpretations of heredity

Learning Objectives

• Identify when a set of forces is balanced by using net force ideas
• Predict the motion outcome (equilibrium or acceleration) from the direction of net force
• Explain how unequal support forces can prevent or allow motion using basic vector reasoning+ Show more

Learning Objectives

• Identify a claim, evidence, and reasoning in a CER argument.
• Use relevant measurements, trends, or comparisons as evidence.
• Explain how reasoning connects evidence to a scientific mechanism.+ Show more

Learning Objectives

• Represent forces acting on an object using a free-body diagram with correct direction and relative magnitude.
• Identify and classify forces such as gravity, normal force, friction, and applied force in real-world scenarios.
• Use the idea of net force (as a vector sum) to predict the most likely resulting motion qualitatively.

Learning Objectives

• Resolve the weight of an object on a slope into perpendicular (normal) and parallel (gravity) components
• Predict how changing the slope angle affects the unbalanced downslope component and the tendency to move
• Use words and simple vector reasoning to explain the role of friction on inclined surfaces+ Show more

Learning Objectives

• Draw and interpret free-body diagrams that show the direction and relative size of forces on an object.
• Identify the normal, gravitational, frictional, and applied forces in common real-world scenarios.
• Explain how adding force vectors determines the net force and predicts changes in motion qualitatively.

Learning Objectives

• Explain how changes in gas temperature affect average particle kinetic energy and pressure in a confined system
• Describe how gas diffusion spreads particles from higher concentration to lower concentration
• Use observable gas behaviors to interpret examples such as altitude pressure changes and seasonal atmospheric mixing

Learning Objectives

• Understand the concept of speed as distance divided by time.
• Differentiate between constant speed and average speed.
• Apply proportional reasoning to relate speed, distance, and time.+ Show more

Learning Objectives

• Understand particle motion and how it relates to gas pressure and temperature.
• Identify how increased particle speed affects gas pressure.
• Explain the relationship between temperature, particle collisions, and pressure.

Learning Objectives

• Explain how reaction time and braking forces affect stopping distance
• Describe how tire-road friction and deceleration determine how quickly a vehicle slows
• Compare how winter conditions and anti-lock braking systems (ABS) influence stopping outcomes

Learning Objectives

• Differentiate static electricity and current electricity by origin, mobility, and observable effects
• Describe how charge transfer creates charge imbalance on surfaces
• Use a circuit model to explain how current electricity results from directed charge flow

Learning Objectives

• Understand the concept of nutrient cycling in ecosystems
• Analyze the movement of nutrients and chemicals within environmental systems
• Apply principles of particle theory, classification, and mass conservation+ Show more

Learning Objectives

• Classify materials as elements, compounds, or mixtures based on their composition
• Differentiate pure substances from mixtures using observable and particle-level ideas
• Identify evidence that a sample has variable composition+ Show more

Learning Objectives

• Explain Newton’s three laws in terms of force, motion, and mass
• Use the first and second laws to predict how changes in force or mass affect acceleration
• Identify action–reaction pairs and predict motion directions+ Show more

Learning Objectives

• Explain how igneous, sedimentary, and metamorphic rocks form from different Earth processes and conditions.
• Describe how mineral physical properties are connected to mineral composition.
• Use the rock cycle to connect tectonic activity to long-term changes in Earth materials.

Learning Objectives

• Understand the importance of connecting evidence to explanations.
• Identify claims, evidence, and reasoning within scientific contexts.
• Differentiate between supported and unsupported claims based on data.+ Show more

Learning Objectives

• Understand how technological choices affect the environment and society.
• Analyze the long-term consequences of energy sources, materials, and disposal.
• Evaluate trade-offs involved in sustainable technology solutions.+ Show more

Learning Objectives

• Understand the concept of constant speed and how it relates to distance and time.
• Interpret distance-time graphs to identify instances of constant speed and acceleration.
• Perform calculations involving constant speed and proportional relationships.+ Show more

Learning Objectives

• Explain how slope on a distance-time graph relates to speed and how flat segments represent rest.
• Calculate average speed using distance and time intervals from points on a distance-time graph.
• Interpret curved segments to describe changing speed and acceleration in motion.

Learning Objectives

• Describe how energy moves through trophic levels in one direction through an ecosystem.
• Explain why available energy decreases from producers to consumers.
• Use food chains and food webs to predict how changes affect population sizes.+ Show more

Learning Objectives

• Identify common failure points in mechanical and electrical designs.
• Understand how failure points relate to specific design features.
• Recognize the importance of balancing trade-offs to improve design durability.

Learning Objectives

• Explain how reaction distance and braking distance combine to determine total stopping distance
• Describe how tire-road friction and decelerating force affect how quickly a vehicle slows
• Evaluate how winter conditions and vehicle systems (like ABS and brake fade) change stopping outcomes

Learning Objectives

• Explain how calibration improves accuracy and how consistent procedures improve precision
• Distinguish random variation from real effects by using replication
• Justify how outliers should be handled to preserve data integrity without bias+ Show more

Learning Objectives

• Identify appropriate axes, units, and scales for data on a graph
• Interpret scatter plots, line graphs, and bar graphs for trends and relationships
• Use models to summarize patterns without adding new variables+ Show more

Learning Objectives

• Identify independent, dependent, and controlled variables in a study plan
• Explain how control variables reduce confounding in experimental results
• Choose measurable data collection methods that match a research question+ Show more

Learning Objectives

• Explain how exponential and logistic growth patterns differ for populations over time
• Describe how carrying capacity, time lags, and predation can shape population trajectories
• Interpret cyclical population changes using examples such as snowshoe hare and lynx+ Show more

Learning Objectives

• Distinguish correlation from causation when evaluating scientific claims.
• Use evidence direction, alternative explanations, and consistency to judge causal reasoning.
• Identify what additional data would be needed to support or rule out competing causes.

Learning Objectives

• Explain how predation affects predator and prey population sizes over time
• Describe behavioral and trait-mediated adaptations that can change survival
• Identify how refuges and compensatory mechanisms can reduce predator impacts+ Show more

Learning Objectives

• Explain how non-native species can disrupt native biodiversity, hydrology, and food webs.
• Describe at least two ecological consequences of invasive species for populations over time.
• Identify common pathways by which invasive species spread in landscapes.+ Show more

Learning Objectives

• Explain how gas particle motion relates to temperature and pressure in a confined space.
• Use particle models to describe how gases expand, compress, and diffuse.
• Predict how changes in temperature affect pressure and gas behavior in real-world Alberta contexts.

Learning Objectives

• Explain how nutrients move through biotic and abiotic parts of an ecosystem over time
• Describe the roles of decomposers, mineralization, and nitrogen fixation in nutrient cycling
• Predict how changes in temperature, moisture, or water flow can affect nutrient availability and productivity+ Show more

Learning Objectives

• Identify herbivores, omnivores, and carnivores by their feeding roles in food chains.
• Explain how trophic position affects energy transfer and biomass from one consumer to another.
• Describe how omnivory can blur discrete trophic levels while still following energy-flow patterns.+ Show more

Learning Objectives

• Explain how trophic modeling represents energy and matter flow between compartments and environmental pools.
• Use mass-balance ideas to describe how production, respiration, and decomposition rates relate to observed fluxes.
• Identify model assumptions and predict how changing a parameter can alter model outcomes.

Learning Objectives

• Describe how primary producers convert energy into organic matter and support food chains.
• Compare factors that affect primary productivity in different plant types and ecosystems.
• Explain how seasonal timing and nutrient/light availability influence energy available to consumers.

Learning Objectives

• Explain how ecosystem models use trophic levels, nutrient pools, and fluxes to represent processes.
• Interpret model outputs to describe what changes in a population over time and what stays conserved.
• Identify common assumptions and limitations of simplified ecosystem models.+ Show more

Learning Objectives

• Explain how intermolecular forces affect melting point, boiling point, and vapour pressure
• Use the idea of attractions between particles to predict volatility and solubility
• Apply intermolecular force ideas to everyday Alberta examples such as freeze–thaw and evaporation

Learning Objectives

• Explain how particle motion relates to gas temperature and pressure
• Describe how changes in collision frequency and force affect gas pressure
• Use particle ideas to connect macroscopic observations to microscopic models

Learning Objectives

• Explain how chemical reactions provide evidence that new substances form.
• Use particle models to describe conservation of atoms during chemical reactions.
• Predict and interpret reaction evidence such as gas production, precipitates, and color change in a closed system.+ Show more

Learning Objectives

• Understand the concept of adaptation in organisms
• Identify different types of environmental pressures
• Recognize examples of adaptation such as pesticide resistance and beak variation+ Show more

Learning Objectives

• Explain how net force is determined when multiple forces act on an object at the same time
• Predict motion outcomes (acceleration or constant velocity) using the direction and size of opposing forces
• Relate real-world forces such as weight and friction to changes in velocity

Learning Objectives

• Model a chemical reaction using particle diagrams that show how atoms and particle counts change before and after the reaction.
• Use energy models to explain whether a reaction releases or absorbs thermal energy and what that implies about particle motion.
• Connect observable evidence (color change, gas formation, temperature change) to particle-level and energy-level changes.

Learning Objectives

• Distinguish between mass as an intrinsic property of matter and weight as a gravitational force.
• Explain how mass and weight relate through gravitational acceleration.
• Apply regional examples like haul truck load specifications and agricultural dosing to understand mass and weight concepts.+ Show more

Learning Objectives

• Understand what scientific models are and how they are used in engineering.
• Recognize different types of models and their purposes.
• Learn how measurements from physical prototypes can lead to model adjustments.+ Show more