Grade 8 Science Worksheets

Learning Objectives

• Understand the differences between series and parallel circuit arrangements.
• Analyze how resistance, current, and voltage behave in series and parallel circuits.
• Predict the effects of circuit configurations on brightness and redundancy.+ Show more

Learning Objectives

• Understand the principles of circuit analysis including conservation laws and relationships between voltages, currents, and power.
• Learn to interpret schematic diagrams and apply reduction techniques to simplify complex networks.
• Develop skills in systematic calculation methods for predicting network responses to source changes or component variations.+ Show more

Learning Objectives

• Understand the concept of electric charge and its properties.
• Differentiate between static and current electricity based on origin and effects.
• Describe real-world phenomena related to electrostatic effects and electric currents.+ Show more

Learning Objectives

• Understand the concept of voltage and how it drives current in circuits.
• Identify sources of voltage such as batteries and generators.
• Analyze multi-source circuits and compare household voltages and renewable outputs.+ Show more

Learning Objectives

• Understand the classification of materials based on their magnetic response: diamagnetic, paramagnetic, and ferromagnetic.
• Explain how microstructural properties and domain alignment influence magnetic behavior such as coercivity and remanence.
• Identify applications of magnetic materials in industry, including separation, lifting, and electrical machinery.+ Show more

Learning Objectives

• Understand the principle of electromagnetic induction and how changing magnetic flux generates voltage.
• Identify the factors affecting the magnitude of induced electromotive force in circuits.
• Explain real-world applications of electromagnetic induction in generators and transformers.+ Show more

Learning Objectives

• Understand the concept of limiting factors and their role in population dynamics.
• Identify biotic and abiotic factors that limit populations in ecosystems.
• Explain how resource availability influences carrying capacity and population stability.+ Show more

Learning Objectives

• Understand how to connect measurable masses of reactants and products in stoichiometry.
• Use proportional reasoning to predict quantities in chemical reactions.
• Apply mass conservation principles to interpret observed changes in reactions.+ Show more

Learning Objectives

• Understand how predator-prey relationships influence population dynamics
• Identify behavioral adaptations used by predators and prey
• Explain the cascading effects of predator absence or recolonization on ecosystems+ Show more

Learning Objectives

• Identify the main components involved in muscle contraction.
• Understand how actin and myosin filaments interact during contraction.
• Recognize the role of ATP and calcium in muscle activity.+ Show more

Learning Objectives

• Explain how human land use, resource extraction, and urban expansion can change habitat structure and species interactions.
• Describe how irrigation and wetland drainage can affect nutrient cycles and freshwater ecosystems in Alberta watersheds.
• Evaluate how invasive species and cumulative watershed effects can disrupt ecological balance.+ Show more

Learning Objectives

• Identify evidence of chemical change in a text about corrosion
• Explain how moisture and salinity can affect the rate and products of corrosion
• Connect protective measures to the chemical reactions involved in corrosion

Learning Objectives

• Understand how observable traits are influenced by genetic instructions and gene variations.
• Explain patterns of dominant and recessive traits and their inheritance across generations.
• Analyze how similarities among related organisms provide evidence of heredity.+ Show more

Learning Objectives

• Identify the main idea and key details about how energy enters ecosystems.
• Explain how energy moves from producers to consumers and how some energy is lost at each step.
• Describe the role of decomposers/detritivores in returning matter and supporting energy flow.

Learning Objectives

• Calculate fluid density using given mass and volume measurements.
• Explain floating and sinking using differences in density.
• Compare the viscosity of different liquids.+ Show more

Learning Objectives

• Compare freshwater and saltwater sources and their availability.
• Explain why available water may be unsafe to drink.
• Identify dissolved substances, suspended materials and biological contamination.+ Show more

Learning Objectives

• Identify organism adaptations to freshwater and marine environments.
• Explain how environmental conditions affect aquatic populations.
• Describe human impacts on aquatic habitats and organisms.+ Show more

Learning Objectives

• Explain how force and surface area influence fluid pressure.
• Compare force transfer in hydraulic and pneumatic systems.
• Describe how fluid compressibility affects device operation.+ Show more

Learning Objectives

• Compare how fluid properties influence practical applications.
• Explain how flow affects fluid use in different systems.
• Describe the importance of compressibility in engineered devices.+ Show more

Learning Objectives

• Identify scientific questions related to freshwater and saltwater problems.
• Develop predictions that guide scientific investigations.
• Interpret observations to explain changes in water systems.+ Show more

Learning Objectives

• Identify domestic, agricultural, and industrial impacts on watershed systems.
• Explain how human activities affect water quantity and quality.
• Compare prevention, treatment, and monitoring strategies using evidence.+ Show more

Learning Objectives

• Compare how moving water, waves and tides reshape landforms.
• Identify evidence of erosion, transportation and deposition.
• Explain how glaciers contribute to landscape changes.+ Show more

Learning Objectives

• Identify predictions, observations and data in scientific investigations
• Evaluate evidence used to support scientific conclusions
• Explain how uncertainty affects interpretations of scientific evidence+ Show more

Learning Objectives

• Identify how evidence can change scientific understanding of human health
• Distinguish research findings from broader health claims
• Compare how investigations use biological and population evidence+ Show more

Learning Objectives

• Explain how technologies correct, record, or extend human vision
• Distinguish optical image formation from digital image recording
• Compare benefits and limitations of vision technologies+ Show more

Learning Objectives

• Identify measurable criteria for evaluating mechanical designs
• Compare effectiveness and efficiency of competing machines
• Evaluate effects of designs on people and the environment+ Show more

Learning Objectives

• Distinguish pure substances, mixtures, and solutions using particle models.
• Explain concentration in real-world mixtures and solutions.
• Compare factors affecting dissolving speed and solubility.+ Show more

Learning Objectives

• Explain mechanical system success or failure using evidence
• Interpret observations and measurements from mechanical systems
• Compare alternative explanations supported by engineering evidence+ Show more

Learning Objectives

• Analyze devices as systems of interacting components and subsystems
• Identify how simple machines change force or motion
• Explain how linkages and transmission elements affect motion+ Show more

Learning Objectives

• Evaluate evidence about optical systems using observations and measurements
• Explain how evidence supports or challenges an optical design
• Explain how evidence can guide improvements to optical designs+ Show more

Learning Objectives

• Compare force ratios with speed or distance ratios in machines
• Use work and energy information to compare machine performance
• Distinguish ideal performance from measured machine performance+ Show more

Learning Objectives

• Explain how multiple body systems cooperate during activity
• Trace oxygen through organs and tissues to working cells
• Trace nutrients through organs and tissues to working cells+ Show more

Learning Objectives

• Explain diffusion or osmosis caused by concentration differences
• Connect cell boundary exchange to tissue and organ functions
• Compare specialized structures organisms use for material exchange+ Show more

Learning Objectives

• Compare reflection, transmission and refraction in optical systems
• Explain light-path changes using evidence about materials and boundaries
• Interpret ray diagrams as models of light paths+ Show more

Learning Objectives

• Compare cell observations from documented scientific investigations
• Explain evidence supporting cells as basic units of life
• Compare evidence from plants, animals and single-celled organisms+ Show more

Learning Objectives

• Explain how confined fluid pressure transmits force through a system
• Compare liquid and gas behaviour in mechanical systems
• Relate piston movement and force to mechanical advantage+ Show more

Learning Objectives

• Explain how lenses form or magnify images
• Compare optical functions of eyes and cameras
• Compare how microscopes and telescopes extend observation+ Show more

Learning Objectives

• Analyze predictions and observations from real-world fluid investigations.
• Interpret scientific data to support explanations about fluids.
• Compare evidence, uncertainty and alternative scientific explanations.+ Show more

Learning Objectives

• Compare historical explanations of how light and vision interact
• Evaluate ray models using observations and optical evidence
• Explain how light, objects, and the eye enable vision+ Show more

Learning Objectives

• Understand how energy enters ecosystems through photosynthesis.
• Explain the flow of energy through food chains and food webs.
• Describe how energy dissipates as heat at each transfer in an ecosystem.+ Show more

Learning Objectives

• Explain how technology choices affect people and the environment beyond immediate performance
• Evaluate trade-offs in a technology’s life cycle, including energy sources, materials, durability, and disposal
• Use evidence and criteria to judge whether a solution is more responsible overall

Learning Objectives

• Understand how relative velocity depends on the reference frame.
• Apply proportional relationships among speed, distance, and time in different scenarios.
• Analyze how objects moving in the same or opposite directions affect observed speeds.+ Show more

Learning Objectives

• Identify how physical property differences (particle size, solubility, boiling point, and magnetic susceptibility) are used to separate mixtures.
• Match common separation methods (filtration, evaporation, distillation) to the property they rely on.
• Explain why some separation methods work better than others for a given mixture in real-world contexts.

Learning Objectives

• Use balanced chemical equations to relate reactant and product quantities in a closed system.
• Apply the idea of mass conservation to check whether observed changes are reasonable.
• Identify limiting reactants and predict which substances determine the amount of product formed.

Learning Objectives

• Explain how corrosion involves chemical change that forms new substances on materials.
• Identify how moisture and salinity affect corrosion rate and damage to structures.
• Describe protective measures that reduce corrosion by changing conditions or reactions.

Learning Objectives

• Explain how particle theory and phases help interpret chemical changes in environmental systems.
• Use mass conservation ideas to describe sources, sinks, and transport in a closed or semi-closed system.
• Classify substances as elements, compounds, or mixtures and relate this to environmental chemistry.+ Show more

Learning Objectives

• Define homogeneous mixtures and distinguish them from heterogeneous mixtures using observable evidence
• Use ideas of solubility and concentration to predict how mixture behaviour changes
• Explain how colligative properties depend on the number of solute particles in a solution+ Show more

Learning Objectives

• Identify the different types of evidence for physical and chemical changes.
• Distinguish between physical and chemical changes based on their evidence.
• Recognize real-world examples of physical and chemical changes.+ Show more