Grade 8 Science Worksheets

Learning Objectives

• Understand how different segments of a trip with varying speeds affect overall travel time and average speed.
• Apply proportional reasoning to compute average speeds from total distances and times.
• Interpret distance-time data to analyze multi-stage journeys.+ Show more

Learning Objectives

• Understand the molecular basis of inheritance and how DNA sequences determine traits
• Learn about gene structure, transcription, translation, and mutations
• Analyze examples of genetic variation and mutation effects on phenotype+ Show more

Learning Objectives

• Explain why scientific knowledge and theories can change when new evidence or improved reasoning becomes available.
• Describe how scientists evaluate competing explanations using the quality and consistency of supporting evidence.
• Use examples to predict how updated evidence could change a theory or refine its predictions.

Learning Objectives

• Define measurement uncertainty and explain its significance in scientific measurements.
• Identify factors affecting precision, accuracy, and reliability of measurements.
• Apply principles of calibration, resolution, and significant figures to reporting data.+ Show more

Learning Objectives

• Understand the physical, chemical, and biological indicators used to assess water quality.
• Interpret ranges of water quality parameters for different aquatic health conditions.
• Recognize the importance of integrated assessments over single-parameter evaluations.+ Show more

Learning Objectives

• Understand the basic concepts and definitions of speciation
• Identify causes of speciation, including geographic isolation and environmental change
• Describe examples of allopatric speciation and adaptive radiation+ Show more

Learning Objectives

• Explain how latitude affects the angle of incoming solar energy and influences regional climate
• Describe how atmospheric circulation, ocean currents, greenhouse gases, and surface reflectivity contribute to climate patterns
• Use evidence-based reasoning to connect climate drivers to short-term weather differences and long-term climate shifts

Learning Objectives

• Understand how water movement influences Earth's surface through erosion, transport, and deposition.
• Identify the processes that shape landforms such as valleys, deltas, and layered deposits.
• Explain how tectonic uplift and water cycling interact to modify landscapes.+ Show more

Learning Objectives

• Explain how surface water and groundwater exchange along streams, including gaining and losing reaches
• Describe how permeability, hydraulic gradients, and recharge zones affect exchange rates
• Connect baseflow, spring discharge, and hyporheic flow to nutrient cycling, contaminant transfer, and habitats

Learning Objectives

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

Learning Objectives

• Understand the difference between mixtures and compounds.
• Identify examples of mixtures and compounds in everyday life.
• Describe properties that distinguish mixtures from compounds.+ Show more

Learning Objectives

• Identify different forms of energy present in mechanical systems.
• Describe how potential and kinetic energy are stored and transformed.
• Recognize thermal and acoustic energy as forms of energy dissipation.+ Show more

Learning Objectives

• Explain how fluid mechanics ideas (viscosity, vessel diameter, pressure gradient) connect to blood flow and resistance.
• Describe how non-Newtonian blood behavior can affect perfusion in small vessels.
• Use simplified pipe-flow relationships to estimate how pressure drop and volumetric flow respond to changes in vessel diameter and stenosis.+ Show more

Learning Objectives

• Understand how models represent cellular processes and organelle functions.
• Identify different types of models used in biology such as diagrams and computational tools.
• Explain the relationships between cell structure and function, including membrane transport and energy pathways.+ Show more

Learning Objectives

• Understand various conservation strategies used to maintain ecosystem stability and biodiversity.
• Identify the roles of protected areas, habitat corridors, and sustainable resource management.
• Analyze factors influencing the effectiveness of conservation approaches in different ecological contexts.+ Show more

Learning Objectives

• Define homeostasis and explain its importance in the human body.
• Describe negative feedback mechanisms and their role in maintaining internal stability.
• Identify different physiological processes regulated by homeostasis, such as temperature, blood chemistry, water balance, and oxygen levels.

Learning Objectives

• Describe the processes involved in nutrient cycling within ecosystems.
• Explain the roles of decomposers, nitrogen fixation, and sedimentation.
• Analyze how environmental factors like temperature and moisture influence nutrient cycles.+ Show more

Learning Objectives

• Understand how temperature, concentration, surface area, and catalysts influence reaction rates.
• Explain the concepts of molecular collision frequency and activation energy in relation to observable reaction speeds.
• Analyze examples like rusting and effervescence to identify factors affecting reaction times.+ Show more

Learning Objectives

• Interpret temperature, precipitation, and storm-frequency data to identify long-term climate trends.
• Distinguish between short-term weather events and longer-term climate variability using evidence.
• Explain how El Niño and La Niña can shift rainfall patterns and influence climate indicators.

Learning Objectives

• Understand the principles of instrument calibration and measurement uncertainty.
• Interpret data involving timed intervals, distances, and force sensor outputs with accuracy and appropriate units.
• Evaluate the importance of data quality and careful interpretation in motion and force measurements.+ Show more

Learning Objectives

• Explain how mechanical energy shifts between gravitational potential energy and kinetic energy as an object moves up or down
• Use conservation of mechanical energy to predict how speed changes on a roller coaster track
• Distinguish gravitational potential energy from kinetic energy using height and motion

Learning Objectives

• Explain how reproductive isolation can lead to speciation over many generations
• Describe how geographic barriers, habitat changes, or behavioral differences reduce gene flow
• Use natural selection and genetic variation to predict how traits may diverge in separated populations

Learning Objectives

• Explain electromagnetic induction using changing magnetic flux and Faraday’s law ideas
• Describe how relative motion and coil design (number of turns, circuit load) affect induced voltage and current
• Connect induction to real-world electrical systems such as generators, transformers, and Alberta power production

Learning Objectives

• Describe the relationship between kinetic energy, potential energy, and their dependence on mass, speed, and position.
• Interpret graphs showing relationships between kinetic energy, mass, and the square of speed.
• Analyze energy transfer in systems like pendulums and roller coasters, emphasizing conservation principles.+ Show more

Learning Objectives

• Identify and describe physical properties of matter such as density, solubility, melting and boiling points.
• Compare the measurable characteristics of different materials and understand how these properties inform classification and separation techniques.
• Relate quantitative measurements like mass, volume, and temperature to physical behaviors in classroom-relevant phenomena.

Learning Objectives

• Understand how mass influences the response of an object to applied forces.
• Explain the relationship between mass, force, and acceleration.
• Compare how objects of different masses respond to the same force.

Learning Objectives

• Understand the principle of conservation of mass in closed systems
• Identify examples of mass conservation during chemical reactions
• Differentiate between material loss and conservation in experiments

Learning Objectives

• Understand the differences between series and parallel circuit arrangements.
• Predict how circuit behavior changes in series and parallel configurations.
• Compare resistances, current distribution, and voltages in series and parallel circuits.+ Show more

Learning Objectives

• Understand different methods for measuring the density of solids and liquids.
• Interpret discrepancies in density measurements caused by factors like trapped air and temperature effects.
• Perform calculations involving theoretical and experimental density values.+ Show more

Learning Objectives

• Explain the purpose and components of trophic models in ecological systems.
• Identify different types of models used to represent energy and matter fluxes.
• Analyze assumptions and limitations of quantitative and conceptual trophic models.+ Show more

Learning Objectives

• Describe factors that influence population dynamics, including carrying capacity, and density-dependent and density-independent factors.
• Analyze case studies such as invasive species, overharvesting, and drought effects to understand oscillations and trends in populations.
• Interpret population graphs, birth and death rate trends, and resource limitations to predict population increase, decline, and equilibrium.+ Show more

Learning Objectives

• Describe the processes involved in the formation and transformation of rocks within the Earth's rock cycle.
• Explain the roles of mantle convection, weathering, erosion, and deposition in shaping Earth's surface features.
• Identify different types of rocks and their formation processes.+ Show more

Learning Objectives

• Understand the different states of matter: solids, liquids, and gases.
• Describe how particles are arranged and move in each state.
• Explain how temperature affects particle motion and state changes.+ Show more

Learning Objectives

• Explain speed as distance divided by time and distinguish constant speed from average speed
• Use proportional reasoning to predict how changes in distance, speed, or time affect one another
• Solve basic speed problems using appropriate units and reasoning

Learning Objectives

• Understand the definition of density as mass per unit volume.
• Relate the concepts of mass, volume, and density through numerical examples.
• Learn SI units used for density, such as kg/m³ and g/cm³.+ Show more

Learning Objectives

• Interpret slopes, areas under curves, and rates of change in graphical data.
• Translate between equations, data tables, and graphical representations.
• Apply graphical reasoning to analyze motion, acceleration, and energy transfer.+ Show more

Learning Objectives

• Identify and explain heritable variations within a species
• Understand how environmental pressures influence trait frequencies
• Recognize examples of natural selection in different species

Learning Objectives

• Define criteria and constraints for engineering problems.
• Identify measurable performance goals, safety requirements, and environmental conditions.
• Analyze trade-offs in problem scenarios such as cost, durability, and time.+ Show more

Learning Objectives

• Describe the mechanisms of surface water and groundwater interaction.
• Explain how baseflow contributes to streams and the influence of permeability and recharge zones.
• Analyze the effects of river stage and seasonal variability on surface-groundwater exchange.+ Show more

Learning Objectives

• Identify temperature change as an observable signature of chemical reactions
• Understand how temperature change indicates chemical transformation
• Recognize other reaction signatures such as precipitate formation, color change, and gas release

Learning Objectives

• Identify major forms of energy (kinetic, potential, thermal, light, and electrical) in everyday situations
• Explain how energy can transfer and transform while following the law of conservation of energy
• Distinguish between energy forms and energy transfer processes such as conduction, convection, and radiation

Learning Objectives

• Understand the basic concept of natural selection
• Identify how advantageous traits contribute to survival and reproduction
• Recognize examples of natural selection in nature

Learning Objectives

• Explain conservation of mass in chemical processes occurring inside closed systems using qualitative reasoning.
• Distinguish closed versus open systems and predict what mass measurements can and cannot reveal.
• Use macroscopic observations to infer how atoms are rearranged between reactants and products.

Learning Objectives

• Understand the main processes of the water cycle.
• Identify how water moves through Earth's systems.
• Describe the role of the Sun and gravity in the water cycle.+ Show more

Learning Objectives

• Understand the purpose of coefficients in balanced chemical equations and their role in atom conservation.
• Identify how coefficients reflect molar proportions, not formulas, in chemical reactions.
• Interpret how balancing equations reflects the law of conservation of mass and aids in stoichiometry calculations.+ Show more

Learning Objectives

• Understand the difference between mixtures and chemical changes.
• Identify different types of mixtures such as solutions, suspensions, and colloids.
• Describe how particles behave in various mixtures.+ Show more

Learning Objectives

• Understand the principles of designing and evaluating solutions based on criteria and constraints.
• Learn how to develop and interpret sketches, trade-off matrices, and assessment indicators.
• Differentiate between qualitative and quantitative evaluations of solutions.+ Show more

Learning Objectives

• Identify the four major types of tissues and their functions.
• Describe the structural differences among epithelial, connective, muscle, and nervous tissues.
• Explain how cellular arrangement and extracellular components influence tissue properties.+ Show more