Grade 8 Science Worksheets

Learning Objectives

• Identify different types of evidence indicating physical and chemical changes.
• Distinguish between physical and chemical changes based on observed evidence.
• Analyze real-world examples of change phenomena in Alberta environments.+ Show more

Learning Objectives

• Explain how a reference frame changes an observer’s measured speed and direction.
• Use relative velocity to find the closing speed of two objects moving toward or away from each other.
• Apply distance–time proportional reasoning to predict meeting or overtaking outcomes within a chosen frame.

Learning Objectives

• Explain how forces (pushes and pulls) can change an object’s motion, including speed and direction.
• Use the ideas of balanced and unbalanced forces to predict how an object’s velocity changes over time.
• Describe the role of net force in determining whether an object accelerates, slows down, or moves at constant velocity.

Learning Objectives

• Understand the structure and components of food webs in aquatic and terrestrial systems.
• Analyze how species interactions and energy pathways contribute to ecosystem stability and resilience.
• Evaluate the effects of seasonal migrations and life-cycle stages on food web link strengths.+ Show more

Learning Objectives

• Explain how food webs connect multiple feeding relationships and energy pathways in a community
• Identify how indirect interactions and redundancy can stabilize a food web when species are lost
• Describe how seasonal migration and life-cycle stages can change the strength of food web links+ Show more

Learning Objectives

• Understand how gravity components influence motion on slopes
• Identify and resolve force components on inclined planes
• Apply vector decomposition to real-world scenarios involving slopes

Learning Objectives

• Explain how evaporation, condensation, and precipitation move water between the atmosphere and Earth’s surface
• Describe how infiltration, runoff, and subsurface storage change water availability over time
• Use a reservoir-and-pathway model to interpret water transfers within the water cycle+ Show more

Learning Objectives

• Explain how ecological restoration and mitigation help re-establish ecological function and connectivity.
• Describe common restoration approaches, including habitat reclamation, riparian buffers, and species reintroductions.
• Identify how monitoring and adaptive management guide restoration progress over time.

Learning Objectives

• Understand the proportional relationship between force and displacement in elastic materials.
• Identify examples of springs and elastic components in real-world systems.
• Explain the concept of linear elastic behavior limits and restorative forces.+ Show more

Learning Objectives

• Explain how food webs show interconnected energy pathways using direct and indirect interactions.
• Describe how redundancy and alternative pathways can stabilize communities when a species is lost.
• Analyze how seasonal migration and life-cycle stages can change the strength of feeding links.

Learning Objectives

• Distinguish physical changes from chemical changes using observable evidence.
• Identify indicators of chemical change such as new substances, energy transfer, colour shifts, or gas evolution.
• Explain how examples in everyday Alberta environments show physical or chemical change.

Learning Objectives

• Understand how observable traits are influenced by genetic instructions.
• Identify patterns of dominant and recessive traits across generations.
• Recognize how genetic similarities relate to family and species.+ Show more

Learning Objectives

• Describe how cell membranes control exchange between intracellular and extracellular environments through selective permeability.
• Identify the roles of proteins, channels, pumps, and vesicular transport in membrane function.
• Explain how membrane composition and surface area affect diffusion and signaling at tissue levels.+ Show more

Learning Objectives

• Explain how energy can transfer and transform between forms during physical processes.
• Identify examples of energy transformations involving mechanical, thermal, electrical, and light energy.
• Use evidence from observable effects (such as warming or slowed motion) to infer energy changes.+ Show more

Learning Objectives

• Understand different conservation strategies and their roles in maintaining ecosystem stability.
• Identify various conservation methods such as protected areas, habitat corridors, and sustainable resource management.
• Analyze the importance of context, adaptive management, and monitoring in conservation efforts.+ Show more

Learning Objectives

• Understand the concept of force and how it affects objects in motion.
• Identify different types of forces such as gravity, air resistance, and contact forces.
• Explain how multiple forces combine to produce a net force that influences motion.+ Show more

Learning Objectives

• Explain how particle motion relates to gas temperature and pressure in a confined space.
• Describe how gas expansion and compression occur when pressure and temperature change.
• Connect diffusion to particle movement and predict how it changes over time and conditions.

Learning Objectives

• Distinguish between correlation and causation in scientific claims
• Evaluate evidence by checking variable direction, alternative causes, and consistency across conditions or trials
• Judge how strongly a conclusion should be stated based on the strength and limits of the data+ Show more

Learning Objectives

• Explain how electrical energy is transformed into thermal, radiant, and mechanical energy in common devices.
• Use electrical power ideas (P = VI) and efficiency to describe how much input energy becomes useful output energy.
• Identify where energy losses occur in electrical systems, including resistive heating and transmission losses.

Learning Objectives

• Explain how particle motion relates to temperature, pressure, and gas expansion or compression in a confined system.
• Describe diffusion using particle ideas and compare diffusion rates under different conditions.
• Use evidence-based reasoning to predict how changes in temperature and confinement affect pressure and gas behavior.

Learning Objectives

• Understand how to interpret distance-time graphs and what the slope indicates about speed.
• Calculate average speed by dividing change in distance by change in time between two points.
• Analyze different segments of graphs to identify periods of constant, increasing, or decreasing speed.+ Show more

Learning Objectives

• Identify the basic components of the immune system.
• Distinguish between innate and adaptive immune responses.
• Recognize the roles of different immune cells such as phagocytic cells, lymphocytes, and antigen-presenting cells.+ Show more

Learning Objectives

• Explain how predator–prey interactions affect population sizes using ideas like functional responses.
• Describe behavioural adaptations and refuges that help prey reduce predation risk.
• Identify how removing or returning top predators can cause trophic cascades that change habitats and vegetation.

Learning Objectives

• Understand how evidence supports scientific claims.
• Identify mechanisms that connect data to explanations.
• Differentiate between claims, evidence, reasoning, and alternative explanations.+ Show more

Learning Objectives

• Identify key factors influencing population size and distribution
• Explain how abiotic and biotic components interact to shape populations
• Relate real-world examples such as migration, habitat, and climate effects+ Show more

Learning Objectives

• Explain how elastic forces can be restorative and relate to displacement in many springs
• Identify when a spring or elastic material behaves approximately linearly and when that relationship breaks down
• Use force-balance ideas to describe how elastic components affect mechanical systems

Learning Objectives

• Understand different methods used to measure biodiversity at genetic, species, and ecosystem levels.
• Identify factors that influence biodiversity estimates, such as sampling techniques and habitat heterogeneity.
• Compare and interpret biodiversity metrics like species richness, evenness, and diversity indices.+ Show more

Learning Objectives

• Define homogeneous mixtures and identify examples in daily life.
• Understand the properties that distinguish homogeneous mixtures from heterogeneous ones.
• Learn how solubility and concentration affect homogeneous solutions.+ Show more

Learning Objectives

• Understand the structure and function of vascular networks and circulatory systems in plants and animals.
• Identify key cellular components involved in transport roles within organ systems.
• Explain how tissue and organ architecture facilitate bulk flow and diffusion for cellular metabolism.+ Show more

Learning Objectives

• Identify the differences between physical and chemical changes based on evidence.
• Recognize examples of physical and chemical changes in everyday scenarios.
• Describe the energy transfer, color shifts, and gas production associated with chemical changes.+ Show more

Learning Objectives

• Explain how simple machines trade force magnitude for distance to accomplish work.
• Describe how levers, pulleys, and gears change input and output forces and motion.
• Connect efficiency and friction to energy transformation in real mechanical systems.

Learning Objectives

• Describe how voltage, current, and resistance are measured using common instruments in a circuit.
• Select appropriate meter connections, ranges, and units to avoid incorrect readings.
• Explain how meter impedance can affect circuit measurements and results.+ Show more

Learning Objectives

• Define ecological succession and distinguish between primary and secondary succession.
• Identify key factors that influence succession pathways.
• Recognize the importance of succession in ecosystem recovery and biodiversity.

Learning Objectives

• Understand the principles of measuring voltage, current, and resistance in electrical circuits.
• Identify proper instrument ranges and connection conventions for accurate measurements.
• Explain how meter impedance influences circuit readings and measurement accuracy.+ Show more

Learning Objectives

• Understand how net force influences the rate of change in an object's motion.
• Explain the relationship between mass and acceleration when a constant force is applied.
• Qualitatively analyze how doubling force or tripling mass affects motion and acceleration.+ Show more

Learning Objectives

• Explain how innate and adaptive immune defenses work together to protect the body from pathogens.
• Describe the roles of phagocytes, antigen-presenting cells, and lymphocytes in immune responses.
• Use tissue-level and circulatory pathways to trace how immune cells coordinate during infection.

Learning Objectives

• Understand how density-dependent factors influence population change.
• Differentiate between density-dependent and density-independent factors.
• Identify examples of resource competition, disease transmission, weather events, and human impact on populations.+ Show more

Learning Objectives

• Understand different strategies used in conservation.
• Identify the importance of protected areas, restoration, and corridors.
• Recognize factors influencing the effectiveness of conservation efforts.

Learning Objectives

• Explain voltage (electric potential difference) as energy per unit charge and relate it to current and resistance
• Use reference points to interpret potential differences across circuit elements
• Compare voltage sources (cells, batteries, generators) and describe how multi-source circuits affect circuit behaviour+ Show more

Learning Objectives

• Explain how centripetal force enables an object to change direction while moving along a curved path
• Describe how centripetal force depends on mass, turn radius, and speed
• Predict what happens when centripetal force is too small for a given turn

Learning Objectives

• Understand the energy transformation process in a pendulum between gravitational potential energy and kinetic energy.
• Identify factors that influence the period and energy distribution of a pendulum.
• Explain how energy conservation occurs in an ideal pendulum without energy dissipation.

Learning Objectives

• Explain how neurons convert stimuli into electrical signals and transmit them to other cells
• Describe how myelination and synaptic vesicle release affect the speed and reliability of signaling
• Connect neuron circuits to reflexes, voluntary movement, and gland secretion

Learning Objectives

• Explain how reaction time and braking force determine stopping distance.
• Describe how tire-road friction and brake fade change deceleration and stopping distance.
• Identify how anti-lock braking systems (ABS) affect traction and braking control on slippery roads.+ Show more

Learning Objectives

• Understand the concept of inertia and how it relates to Newton's First Law
• Identify real-life examples demonstrating Newton's First Law
• Predict the effects of forces on objects at rest and in motion+ Show more

Learning Objectives

• Explain how matter cycles through ecosystems using decomposition, mineralization, nitrogen fixation, and sedimentation.
• Describe how carbon and nitrogen move between biotic and abiotic pools in soil and wetlands.
• Analyze how environmental factors (temperature and moisture) and human activities can change nutrient availability and productivity.

Learning Objectives

• Understand how net force influences the acceleration of objects.
• Explain the relationship between mass, force, and motion.
• Predict motion changes when net force or mass is altered based on qualitative reasoning.+ Show more

Learning Objectives

• Understand the concept of trophic modeling and its applications in ecology.
• Identify different types of models used to represent energy and matter fluxes.
• Analyze assumptions and sensitivities in trophic models.+ Show more

Learning Objectives

• Use appropriate axes, units, and scales to create and interpret graphs that show relationships between variables.
• Compare and select graph types (scatter plots, line graphs, bar graphs) based on the pattern being represented.
• Interpret graphs by reading labels correctly, recognizing trends, and avoiding misleading conclusions from inconsistent units.