Grade 8 Science Worksheets

Learning Objectives

• Understand the basic concepts of ecological succession and how communities change over time.
• Differentiate between primary and secondary succession.
• Identify species traits and environmental factors that influence successional pathways.+ Show more

Learning Objectives

• Differentiate speed, velocity, and acceleration using correct scientific definitions.
• Identify whether a quantity is scalar or vector based on its definition.
• Interpret changes in motion from simple distance/position and time information.

Learning Objectives

• Understand the different types of population dynamics including exponential growth, logistic regulation, and cyclical fluctuations.
• Explain the factors such as carrying capacity, reproductive strategies, and time lags that influence population trajectories.
• Apply knowledge of population cycles like snowshoe hare–lynx and forest insect outbreaks to real case studies.+ Show more

Learning Objectives

• Identify common failure points in designs and explain how specific design features can lead to those failures.
• Describe how engineers balance trade-offs when improving a design (for example, strength vs. weight or safety vs. cost).
• Use evidence from testing or observations to revise a design while staying within constraints.

Learning Objectives

• Explain how a reference frame changes an observer’s measured speed for moving objects.
• Use relative velocity ideas to predict when two objects meet or when one overtakes another.
• Apply proportional relationships among distance, speed, and time within a chosen frame.

Learning Objectives

• Understand how cell membranes control exchange between the inside and outside of cells through selective permeability.
• Identify the roles of proteins, pumps, and vesicular transport in membrane function.
• Explain how membrane composition and surface area influence diffusion and cell signaling.+ Show more

Learning Objectives

• Understand how observed speed depends on the reference frame.
• Apply proportional relationships among speed, distance, and time within different frames.
• Analyze simple scenarios involving two objects moving toward each other or crossing a stream to determine apparent speeds.+ Show more

Learning Objectives

• Identify independent, dependent, and controlled variables in an experiment.
• Understand how control variables influence experiment outcomes.
• Learn methods to plan experiments with proper variable control.

Learning Objectives

• Identify the functions of key cell organelles such as mitochondria, chloroplasts, and lysosomes.
• Explain how organelle specialization supports cellular and tissue functions.
• Describe the variation in organelle abundance and form in different cell types.+ Show more

Learning Objectives

• Understand the difference between pure substances and mixtures.
• Identify examples of pure substances and mixtures from regional contexts.
• Classify materials based on their composition and characteristics.+ Show more

Learning Objectives

• Understand how forces are represented as vectors with magnitude and direction.
• Identify and distinguish between gravitational, normal, frictional, and applied forces in various scenarios.
• Create free-body diagrams showing all forces acting on an object.+ Show more

Learning Objectives

• Explain how grounding, insulation, and overload protection reduce electrical shock and fire risks.
• Describe how protective devices and correct component specifications support safe electrical system design.
• Evaluate environmental implications of electricity generation and consider trade-offs in local infrastructure decisions.

Learning Objectives

• Explain how particle motion affects gas pressure and temperature.
• Describe relationships between pressure, volume, and temperature in gases.
• Analyze how gases expand, compress, and diffuse under different conditions.+ Show more

Learning Objectives

• Describe how corrosion is a chemical change that produces new substances on materials.
• Explain how moisture, oxygen, and salt (salinity) can speed up corrosion in everyday infrastructure.
• Identify evidence that corrosion has occurred and predict how protective measures can reduce degradation.+ Show more

Learning Objectives

• Describe biodiversity at genetic, species, and ecosystem levels
• Explain how species richness, evenness, and diversity indices are used to measure biodiversity
• Evaluate how sampling methods and environmental variation can change biodiversity estimates+ Show more

Learning Objectives

• Explain the principle of conservation of mass in physical and chemical changes.
• Describe how mass remains constant in closed systems during reactions.
• Apply the concept of mass conservation to real-world Alberta contexts such as industrial processes and environmental assessments.

Learning Objectives

• Understand the difference between elastic and inelastic collisions.
• Explain how energy is transferred and transformed during collisions.
• Describe the role of momentum in collision outcomes.+ Show more

Learning Objectives

• Describe how electrical energy transforms into thermal, radiant (light), and mechanical energy in common devices
• Explain why efficiency matters by relating useful power output to total input power
• Identify where energy losses occur in circuits and power transmission+ Show more

Learning Objectives

• Identify the major parts of the respiratory system
• Understand the functions of the respiratory organs
• Explain how gas exchange occurs in the lungs+ Show more

Learning Objectives

• Understand how water movement shapes Earth's surface through erosion, transport, and deposition.
• Identify different landforms caused by water, such as valleys and deltas.
• Describe the role of groundwater and tectonic uplifts in landscape evolution.+ Show more

Learning Objectives

• Identify key features of a distance-time graph
• Describe what different graph shapes indicate about motion
• Calculate speed from a distance-time graph segment+ Show more

Learning Objectives

• Understand the basic principles of the particle theory of matter.
• Connect microscopic particle behaviour to observable properties of solids, liquids, and gases.
• Describe how temperature influences particle motion and state changes in different landscapes.+ Show more

Learning Objectives

• Identify and explain the Claim, Evidence, and Reasoning (CER) parts of a scientific argument.
• Use appropriate evidence (measurements, trends, and comparisons) to support a claim.
• Write reasoning that connects evidence to a claim using scientific principles and variable logic.+ Show more

Learning Objectives

• Distinguish short-term weather patterns from long-term climate patterns using data records
• Interpret simple data summaries (mean, variability, and frequency) to identify patterns and changes
• Explain how graphs and storm/precipitation records can reveal variability versus long-term change+ Show more

Learning Objectives

• Understand the hierarchical levels of cell organization in multicellular organisms.
• Identify the roles of tissues, organs, and organ systems in maintaining organismal function.
• Explain how similar cells combine to form tissues and how tissues integrate into organs.

Learning Objectives

• Explain how multiple organ systems coordinate to maintain homeostasis
• Describe how hormonal and nervous communication link cellular activity to whole-body responses
• Connect structural specializations in cells and tissues to organ function and system integration

Learning Objectives

• Understand how the nervous system transmits rapid signals through neurons.
• Identify cellular features like myelination and synaptic vesicles that enhance signaling speed.
• Describe how neuron networks control reflexes, movements, and gland secretions.+ Show more

Learning Objectives

• Explain how introduced species become invasive and describe the steps involved (establish, spread, outcompete).
• Identify ecological traits and missing predators that can make invasive species successful.
• Describe multiple ecosystem impacts of invasions, including changes to biodiversity, nutrient cycling, and habitat structure.+ Show more

Learning Objectives

• Understand how to interpret the slope and features of distance-time graphs.
• Calculate speed by dividing change in distance by change in time from graph points.
• Analyze segments of graphs to determine periods of constant, increasing, or decreasing speed.+ Show more

Learning Objectives

• Understand different separation techniques based on physical properties.
• Identify methods like filtration, evaporation, and distillation and their applications.
• Explain how separation methods are used in real-world contexts such as water treatment and mineral processing.+ Show more

Learning Objectives

• Identify the stages in a product's life cycle.
• Understand how different parts of a product's life cycle are interconnected.
• Recognize trade-offs involved in product design and disposal.+ Show more

Learning Objectives

• Understand how different organ systems coordinate to maintain homeostasis.
• Identify the functions of respiratory, circulatory, excretory, and endocrine systems.
• Explain cellular and tissue specializations that support organ functions.+ Show more

Learning Objectives

• Explain how epithelial, connective, muscle, and nervous tissues differ in structure and function.
• Identify which tissue type best matches a given description of role in the body.
• Describe how tissue arrangement supports mechanical properties such as protection, support, movement, and signal transmission.

Learning Objectives

• Identify and describe the four main tissue types: epithelial, connective, muscle, and nervous tissues.
• Explain the structural differences and roles of each tissue type.
• Compare cellular organization and extracellular components among tissue types.+ Show more

Learning Objectives

• Understand the factors that contribute to ecosystem resilience and stability.
• Identify the role of biodiversity and keystone species in ecosystems.
• Analyze how external disruptions affect ecological balance and recovery.+ Show more

Learning Objectives

• Explain how intermolecular forces affect melting point, boiling point, and vapour pressure.
• Connect intermolecular forces to solubility by comparing attractions between different particles.
• Use real-world Alberta examples to describe how force strength influences phase change and evaporation.

Learning Objectives

• Identify the roles of independent, dependent, and controlled variables in a scientific study.
• Describe methods for collecting data that align with research questions.
• Explain the importance of control variables in reducing bias and confounding factors.+ Show more

Learning Objectives

• Explain how abiotic factors and biotic interactions can change population dynamics and food-web relationships.
• Analyze how human activities can interact with environmental change to affect ecosystem resilience and biodiversity.
• Use evidence from an integrated case to support trade-off decisions in conservation.

Learning Objectives

• Explain how energy can change form during physical processes while still being conserved
• Describe examples of mechanical-to-thermal energy conversion due to friction
• Describe examples of electrical-to-light and electrical-to-thermal energy conversion in household devices+ Show more

Learning Objectives

• Explain how calibration, repeatability, and uncertainty affect precision in measurements of motion and force.
• Estimate uncertainty and interpret data using appropriate units and significant figures.
• Apply careful reasoning to compare measurements from different instruments and conditions.

Learning Objectives

• Describe how igneous, sedimentary, and metamorphic rocks form under different conditions.
• Identify key mineral properties and what they reveal about mineral composition.
• Explain how the rock record connects Earth’s tectonic activity to geological changes.+ Show more

Learning Objectives

• Explain how engineering models connect inputs to expected outputs and support predictions.
• Describe how comparing prototype measurements with model predictions leads to model refinement.
• Use evidence from testing to justify changes to a model and improve design decisions.

Learning Objectives

• Identify factors that influence population size and distribution
• Explain how abiotic and biotic factors affect populations
• Analyze examples of population dynamics in Alberta ecosystems+ Show more

Learning Objectives

• Understand how energy flows through food chains and webs.
• Identify the roles of producers, consumers, and decomposers.
• Explain how energy transfer affects population sizes and community structure.+ Show more

Learning Objectives

• Understand how climate variation impacts temperature and precipitation patterns.
• Identify the effects of climate change on ecosystems and species interactions.
• Analyze the consequences of shifting species ranges and phenology.+ Show more

Learning Objectives

• Explain how a pendulum transfers energy between gravitational potential energy and kinetic energy during its swing
• Describe how friction and air resistance affect the conservation of mechanical energy in real pendulums
• Relate changes in amplitude, mass, and length to a pendulum’s energy and/or period

Learning Objectives

• Describe the components and functions of the innate and adaptive immune systems.
• Identify cellular specializations involved in immune responses, such as phagocytes, lymphocytes, and antigen-presenting cells.
• Explain the role of lymphoid organs and circulatory pathways in organizing immune cell interactions.+ Show more

Learning Objectives

• Explain how species interactions such as predation, competition, mutualism, and parasitism affect survival and reproduction.
• Describe how different interactions can change population sizes and community structure over time.
• Use evidence-based reasoning to predict how environmental conditions influence which species persist.