Grade 8 Science Worksheets

Learning Objectives

• Identify questions that can be tested using evidence
• Recognize how variables change in an investigation
• Distinguish between observations and testable predictions

Learning Objectives

• Explain how atmospheric pressure influences weather and physical systems.
• Describe how barometers operate based on pressure changes.
• Understand the relationship between altitude and pressure variation.+ Show more

Learning Objectives

• Analyze hydrologic cycle dynamics within a regional water system.
• Understand watershed connectivity and groundwater-surface interactions.
• Identify governance challenges in large basin water management.+ Show more

Learning Objectives

• Understand how a barometer measures atmospheric pressure.
• Learn the relationship between atmospheric pressure and boiling point.
• Identify how pressure gradients influence wind movement.+ Show more

Learning Objectives

• Explain kinetic energy changes during collisions in a closed system
• Compare elastic and inelastic collisions using kinetic energy changes
• Track energy transfers caused by work and friction+ Show more

Learning Objectives

• Identify factors that influence the speed of chemical reactions
• Explain how temperature, concentration, surface area, and catalysts affect reaction rates
• Connect molecular collision frequency and activation energy to observable rate changes+ Show more

Learning Objectives

• Explain how reaction rate changes with temperature, concentration, surface area, and catalysts using collision and activation-energy ideas
• Relate molecular changes to observable time scales, such as rusting and effervescence
• Use quantitative reasoning (relative speed and time) to predict which conditions increase or decrease reaction rates

Learning Objectives

• Explain how water moves through a watershed, including surface runoff and infiltration to groundwater
• Describe how connectivity in a watershed links land activities to lake/river water quality
• Evaluate how governance and monitoring help manage trade-offs among ecosystem health, water supply, and economic uses

Learning Objectives

• Understand the steps involved in the scientific method and inquiry.
• Describe how empirical evidence supports scientific claims.
• Explain the importance of controlled experiments and peer critique.+ Show more

Learning Objectives

• Differentiate physical and chemical changes using particle-level reasoning.
• Identify observable chemical indicators such as gas production, color change, and precipitate formation.
• Use evidence-based claims to decide whether a new substance formed.

Learning Objectives

• Explain how atmospheric pressure affects boiling point and sealed systems
• Describe how barometers measure atmospheric pressure
• Use pressure gradients and kPa units to relate pressure differences to weather and wind+ Show more

Learning Objectives

• Understand the dynamics of water systems in large basins, including hydrologic cycles and watershed connectivity.
• Analyze the challenges related to groundwater-surface water interactions and governance in transboundary water basins.
• Evaluate environmental issues such as contaminant sources, nutrient loading, and invasive species impacts.+ Show more

Learning Objectives

• Describe the differences between passive and active transport mechanisms in cell membranes.
• Explain how diffusion and osmosis contribute to maintaining cellular homeostasis.
• Identify factors affecting the rate of diffusion and osmosis across membranes.+ Show more

Learning Objectives

• Understand the components and dynamics of large regional water systems.
• Analyze the challenges related to governance, contamination, and resource management.
• Recognize the impact of climate change and invasive species on water balance.+ Show more

Learning Objectives

• Identify observable signs of chemical and physical changes.
• Distinguish between chemical and physical transformations based on evidence.
• Explain examples such as rusting and effervescence to classify reactions.+ Show more

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

• Describe the differences between passive and active transport mechanisms across membranes.
• Explain the roles of carrier proteins, pumps, and vesicular processes in membrane transport.
• Relate transport mechanisms to cellular functions such as nutrient uptake, ionic balance, and volume regulation.+ Show more

Learning Objectives

• Explain how temperature, concentration, surface area, and catalysts can change the rate of a chemical reaction.
• Connect reaction rates to collision frequency and activation energy.
• Use evidence from a text to identify cause-and-effect in reaction rate changes.

Learning Objectives

• Identify observable evidence that indicates a chemical change versus a physical change.
• Classify common transformations using evidence such as gas formation, precipitate, temperature/colour change, or irreversible property change.
• Explain how atomic rearrangement relates to chemical change and why it cannot be reversed by simple physical methods.

Learning Objectives

• Identify observable evidence distinguishing chemical and physical changes.
• Describe examples of physical and chemical reactions based on evidence.
• Explain how observable signs indicate atomic rearrangement or property change.+ Show more

Learning Objectives

• Define mechanical efficiency and explain why real systems often use more input energy than predicted.
• Identify common mechanisms that cause efficiency losses, including frictional heating, sound emission, and material hysteresis.
• Describe practical ways to measure or estimate energy losses and explain design strategies that reduce them.

Learning Objectives

• Distinguish between physical and chemical changes based on observable evidence.
• Identify common signs of chemical and physical transformations.
• Understand examples like rusting and effervescence to classify reactions.+ Show more

Learning Objectives

• Explain how interactions among organisms (predation, competition, disease, and mutualism) influence population size.
• Describe how changes in populations can affect ecosystem stability over time.
• Connect population interactions to changes in energy flow and matter cycling.

Learning Objectives

• Define mechanical efficiency using useful output and input energy
• Identify friction, sound, and hysteresis as energy loss mechanisms
• Explain how gears, bearings, and belts lose efficiency+ Show more

Learning Objectives

• Distinguish chemical and physical changes using observable reaction evidence.
• Identify common evidence of chemical reactions such as gas formation, precipitate, temperature change, and color shift.
• Explain how atomic rearrangement leads to chemical changes and new substances.

Learning Objectives

• Differentiate renewable and nonrenewable resources and explain why their availability differs over time
• Describe how resource extraction and use can create environmental impacts such as pollution, habitat disruption, and land degradation
• Evaluate sustainability by comparing human demand with regeneration capacity and by considering mitigation strategies+ Show more

Learning Objectives

• Understand energy dissipation mechanisms such as frictional heating, sound emission, and hysteresis.
• Explain how these losses reduce the overall efficiency of mechanical systems.
• Identify factors that cause efficiency reductions in gears, bearings, and belt drives.+ Show more

Learning Objectives

• Understand the different types of variables in scientific investigations: independent, dependent, and controlled.
• Identify variables in experimental scenarios.
• Recognize the importance of controls in conducting fair tests.+ Show more

Learning Objectives

• Understand the hydrologic cycle within large basin systems
• Identify factors influencing nutrient loading and contaminant sources
• Analyze governance and management challenges in transboundary water areas+ Show more

Learning Objectives

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

Learning Objectives

• Understand the mechanisms of energy dissipation in mechanical systems
• Identify common causes of efficiency reduction in gears, bearings, and belt drives
• Learn measurement approaches to quantify mechanical energy losses+ Show more

Learning Objectives

• Understand basic concepts of adaptation and natural selection
• Identify how traits help organisms survive environmental pressures
• Recognize the role of heritability and variation in evolutionary change+ Show more

Learning Objectives

• Explain how kinetic energy changes correspond to energy transferred to or from an object in a closed system
• Use conservation of energy to account for energy in elastic and inelastic collisions and during frictional heating
• Track energy conversions among chemical, electrical, and mechanical forms

Learning Objectives

• Explain how changes in an object's kinetic energy relate to energy transfer within a system.
• Describe different types of collisions and how energy is conserved or transformed during each.
• Identify sources of energy loss such as frictional heat and analyze their effects.+ Show more

Learning Objectives

• Understand how changes in an object's kinetic energy relate to energy transfer.
• Identify examples of energy transfer and transformation in real-world systems.
• Explain how energy is conserved, transferred, and transformed during collisions, friction, and other processes.+ Show more

Learning Objectives

• Explain the principle of energy conservation in various systems.
• Describe how energy transfers occur during elastic and inelastic collisions.
• Analyze the conversion of energy between chemical, electrical, and mechanical forms.+ Show more

Learning Objectives

• Understand how changes in an object's kinetic energy relate to energy transfer in closed systems.
• Identify examples of energy transfer through work and heat during physical processes.
• Differentiate between elastic and inelastic collisions and their effects on energy conservation.+ Show more

Learning Objectives

• Understand the relationship between motion and energy.
• Explain how energy is transferred during collisions and motion.
• Identify different forms of energy and their conversions.+ Show more

Learning Objectives

• Understand the concept of energy transfer between objects
• Identify types of energy involved in common physical processes
• Describe how energy is conserved in closed systems+ Show more

Learning Objectives

• Understand the mechanisms of energy dissipation in mechanical systems.
• Identify common causes of reduced efficiency in gears, bearings, and belt drives.
• Learn measurement approaches for quantifying energy losses.+ Show more

Learning Objectives

• Explain how atmospheric pressure affects boiling point and the operation of barometers and weather instruments.
• Use pressure-gradient ideas to describe how wind is generated in Earth’s atmosphere.
• Connect pressure differences to mechanical effects such as suction and elevation changes using kPa.+ Show more

Learning Objectives

• Explain how changes in an object's kinetic energy are related to energy transfer in various types of collisions.
• Identify different forms of energy conversion, including chemical, electrical, and mechanical forms.
• Use examples of energy transfers like frictional heating and work to describe energy conservation principles.+ Show more

Learning Objectives

• Explain how changes in an object's kinetic energy relate to energy transfers within a system.
• Describe examples of energy transfer in collisions, friction, and energy conversions.
• Analyze how energy is conserved across system boundaries through work and heat transfer.+ Show more

Learning Objectives

• Explain the differences between passive and active transport mechanisms across cell membranes.
• Identify various types of transport processes including diffusion, osmosis, facilitated diffusion, and active transport.
• Connect the functions of carrier proteins and pumps to maintaining ionic gradients and nutrient uptake.+ Show more

Learning Objectives

• Explain how the hydrologic cycle links precipitation, surface water, and groundwater in a large basin
• Describe watershed connectivity and how nutrients, contaminants, and invasive species can move through water systems
• Analyze groundwater–surface water exchange and how monitoring supports adaptive management+ Show more

Learning Objectives

• Understand the basic processes of passive transport including diffusion and osmosis
• Identify and explain the roles of facilitated diffusion and active transport
• Describe vesicular processes like endocytosis and exocytosis+ Show more

Learning Objectives

• Understand how atmospheric pressure influences boiling points and weather instruments.
• Describe the operation of a barometer and the effects of pressure gradients on wind.
• Analyze the relationship between altitude and pressure variations, including implications for high-altitude systems.

Learning Objectives

• Explain how atmospheric pressure influences boiling points and weather instruments.
• Describe the operation of a barometer and how pressure gradients drive wind.
• Analyze the mechanical consequences of pressure differences in sealed systems.+ Show more