Grade 8 Science Worksheets

Learning Objectives

• Define net force and determine its direction when forces act in opposite directions
• Explain how a nonzero net force causes changes in velocity (speed and/or direction)
• Use force values to predict acceleration for a cart moving on a track

Learning Objectives

• Explain how the particle model uses constant motion and forces to describe properties of matter.
• Connect particle spacing and motion to the differences among solids, liquids, and gases.
• Use the particle model to predict how temperature affects diffusion and compressibility.+ Show more

Learning Objectives

• Identify and compare physical properties of matter such as density, solubility, melting and boiling points.
• Explain how physical characteristics inform classification and separation techniques.
• Relate measurable quantities like mass, volume, and temperature to observed physical behaviors.+ Show more

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

• Interpret data by identifying trends, patterns, and relationships in graphs and tables.
• Explain whether data suggest correlation, causation, or no clear relationship while using scientific reasoning.
• Evaluate the role of uncertainty and outliers in forming evidence-based conclusions.+ Show more

Learning Objectives

• Explain how scientific claims gain strength from quality evidence, consistent patterns, and reasonable interpretations.
• Distinguish between direct observations and measurement-derived data when evaluating a scientific claim.
• Evaluate whether a claim is well-supported by repeated observations, models, and appropriate reasoning.

Learning Objectives

• Understand the role of air mass motions in changing weather conditions.
• Identify key features of surface pressure systems and their influence.
• Explain processes such as frontogenesis and cyclogenesis in weather development.+ Show more

Learning Objectives

• Understand how multiple organ systems coordinate to maintain homeostasis.
• Identify key functions of respiratory, circulatory, excretory, and endocrine systems.
• Explain how cellular structures support systemic functions.+ Show more

Learning Objectives

• Explain how scientific explanations connect evidence to cause-and-effect or causal mechanisms
• Use observations, patterns in measurements, and model-based reasoning to support a claim
• Differentiate correlation from causation by evaluating whether evidence supports a causal mechanism+ Show more

Learning Objectives

• Explain how accuracy and precision affect the credibility of scientific measurements.
• Use appropriate units, tools, and recording practices when measuring physical quantities.
• Identify how significant figures and consistent procedures improve data quality.+ Show more

Learning Objectives

• Understand the principle of mass conservation in closed chemical systems.
• Analyze the relationships between reactants and products in chemical reactions.
• Differentiate between open and closed systems in the context of matter conservation.+ Show more

Learning Objectives

• Explain how observations and questions lead to testable scientific investigations.
• Describe how evidence from data supports or challenges an explanation.
• Use appropriate methods and careful record-keeping to compare results with existing knowledge.

Learning Objectives

• Explain how scientific models represent systems that are too small, too large, or too complex to observe directly
• Identify how different model types (diagrams, replicas, simulations, and mathematical relationships) help scientists organize information and make predictions
• Evaluate a model’s usefulness based on how well it fits evidence and how it changes when new observations disagree

Learning Objectives

• Describe the function of different cell organelles and how their structure supports their role.
• Explain how organelle specialization varies with cell function and tissue type.
• Identify the roles of mitochondria, chloroplasts, and lysosomes in cellular processes.+ Show more

Learning Objectives

• Distinguish observations, claims, and assumptions when analyzing a science question.
• Write and evaluate testable questions that can be supported by measurable or observable evidence.
• Identify independent and dependent variables in relationships described by scientific questions.

Learning Objectives

• Identify the main factors influencing global temperature changes over time.
• Evaluate multiple lines of evidence related to climate change.
• Differentiate between natural and anthropogenic climate drivers.+ Show more

Learning Objectives

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

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

• Describe the different states of matter: solid, liquid, gas, and plasma.
• Explain the kinetic molecular theory as it relates to phase changes.
• Identify energy changes associated with phase transitions such as melting, boiling, condensation, and sublimation.+ 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

• Understand the concept of aerodynamic drag and factors affecting it.
• Identify how shape and flow conditions influence air resistance.
• Analyze practical applications where drag reduction is important.+ Show more

Learning Objectives

• Understand the concept of centripetal force and its role in circular motion.
• Explain how turn radius, mass, and force magnitude interact to maintain circular motion.
• Analyze regional phenomena like road curves and amusement rides in terms of centripetal force.+ Show more

Learning Objectives

• Understand the factors affecting stopping distance during braking.
• Explain the role of tire-road friction and mechanical systems in deceleration.
• Analyze how environmental conditions influence braking effectiveness.+ Show more

Learning Objectives

• Explain the difference between static and kinetic friction.
• Identify factors affecting the strength of frictional forces.
• Describe real-world examples of friction in transportation and agriculture.+ Show more

Learning Objectives

• Define speed, velocity, and acceleration with precision and clarity.
• Differentiate between scalar and vector quantities in motion.
• Interpret real-world examples of directional motion in the context of regions such as Calgary and Banff.+ Show more

Learning Objectives

• Understand how to resolve gravitational force into components on an inclined plane.
• Analyze the effect of slope steepness on unbalanced forces and potential acceleration.
• Apply vector decomposition to real-world inclined force scenarios and analyze frictional resistance.+ Show more

Learning Objectives

• Explain how scientific theories are revised when new evidence, improved measurement, or stronger reasoning becomes available
• Compare competing explanations by evaluating the quality and consistency of their supporting evidence
• Use evidence-based reasoning to make predictions while recognizing that scientific knowledge can change

Learning Objectives

• Understand the relationship between force magnitude and contact time during collisions.
• Explain how structural deformation absorbs energy in impact events.
• Analyze real-world collision scenarios to identify impulse effects and observable outcomes.+ Show more

Learning Objectives

• Understand the concept of mechanical energy and how forces perform work on systems.
• Explain how potential and kinetic energy change during motion, using real-world examples.
• Qualitatively analyze force interactions and energy transformations in mechanical systems.+ Show more

Learning Objectives

• Understand the principles of instrument calibration and measurement uncertainty.
• Interpret measurement data considering significant figures and error estimates.
• Apply measurement concepts to real-world contexts, such as braking distances and force readings.+ Show more

Learning Objectives

• Understand the concept of balanced and unbalanced forces and how they affect motion or equilibrium.
• Analyze force vectors, support reactions, and their role in static and dynamic systems.
• Identify real-world examples of force balance and describe their behavior.+ Show more

Learning Objectives

• Describe how forces are represented as vectors in free-body diagrams.
• Identify and distinguish between gravitational, normal, frictional, and applied forces in various scenarios.
• Support reasoning about combined forces and resulting motion using vector addition.+ Show more

Learning Objectives

• Distinguish between mass as an intrinsic property of matter and weight as the gravitational force on that mass.
• Understand how regional examples illustrate mass and weight concepts, such as load specifications and dosing.
• Explain the relationship between mass, gravitational acceleration, and weight.+ Show more

Learning Objectives

• Explain Newton's three laws of motion and how they relate to force, mass, and acceleration.
• Apply Newton's laws to regional scenarios such as heavy haul trucks, hockey puck motion, and seatbelt restraints.
• Predict the direction and magnitude of objects' motion based on applied forces.

Learning Objectives

• Understand how elastic forces depend on deformation of materials.
• Identify examples of springs and elastic components in real-world systems.
• Explain the concept of linear elastic behavior limits and force direction.+ Show more

Learning Objectives

• Identify the key components of complex systems involving multiple forces.
• Understand how to decompose system forces into vector components.
• Analyze static versus dynamic behavior by summing forces.+ Show more

Learning Objectives

• Identify differences between physical and chemical changes in materials.
• Recognize evidence indicating chemical reactions such as colour shifts, gas release, or energy transfer.
• Analyze examples of physical and chemical changes in Alberta environments.+ Show more

Learning Objectives

• Explain how DNA carries hereditary information through genes located on chromosomes.
• Describe how genes provide coded instructions that lead to protein production.
• Connect mutations in DNA to changes in protein production and inherited variation.

Learning Objectives

• Explain how natural disturbances and long-term environmental shifts can change ecosystems over time
• Describe how ecological succession affects species composition after a disturbance
• Evaluate how human activities can influence ecosystem stability and biodiversity+ Show more

Learning Objectives

• Explain how energy moves through an ecosystem from producers to consumers.
• Distinguish food chains from food webs and describe how they show feeding relationships.
• Describe why energy decreases at higher trophic levels and how that forms an energy pyramid pattern.+ Show more

Learning Objectives

• Explain how the fossil record provides evidence that life changes over long periods
• Compare fossils from older versus younger rock layers to infer patterns of change
• Use anatomical similarities and differences to support evolutionary relationships+ Show more

Learning Objectives

• Explain how genes and alleles are passed from parents to offspring during reproduction
• Distinguish between genotype and phenotype and relate them to inherited traits
• Use allele combinations to predict how traits may appear in offspring

Learning Objectives

• Explain how limiting factors affect population growth, survival, and reproduction
• Describe carrying capacity and how populations behave when resources change
• Use evidence from scenarios to predict whether a population will grow, stabilize, or decline+ Show more

Learning Objectives

• Explain the main processes of the water cycle, including evaporation, condensation, precipitation, and runoff.
• Describe how energy from the Sun and gravity drive the continuous movement of water through Earth systems.
• Connect water cycle processes to weather, climate, and habitats.

Learning Objectives

• Describe the main processes involved in the hydrologic cycle.
• Explain the role of solar energy and gravity in water movement.
• Identify the different reservoirs of water and their residence times.+ Show more

Learning Objectives

• Explain how meiosis produces genetic variation through random assortment and recombination
• Describe how allele combinations in gametes affect trait differences in offspring
• Connect genetic variation from meiosis to natural selection and evolution over time

Learning Objectives

• Understand how force and displacement relate to work input in mechanical systems.
• Apply the work–energy theorem to calculate changes in kinetic and potential energies.
• Calculate work done in scenarios involving constant and variable forces.+ Show more

Learning Objectives

• Understand how particle motion relates to temperature and phase changes.
• Explain the processes of melting, boiling, and condensation from a microscopic perspective.
• Relate macroscopic temperature changes to microscopic particle energy and motion.+ Show more