Grade 8 Science Worksheets

Learning Objectives

• Understand predator-prey relationships in ecosystems.
• Identify the roles of predators and prey through reading comprehension.
• Analyze how predator presence or absence affects community structure.+ Show more

Learning Objectives

• Understand the concept of conservation of mass
• Identify atoms and their role in chemical reactions
• Learn how balanced chemical equations reflect mass conservation+ Show more

Learning Objectives

• Understand the basic concepts of ecological succession
• Identify pioneer species and their roles
• Differentiate between primary and secondary succession+ Show more

Learning Objectives

• Understand how human land use impacts habitats and ecosystems.
• Identify various human activities that affect water systems and species interactions.
• Evaluate mitigation strategies used to restore ecological balance.+ Show more

Learning Objectives

• Define water potential and explain its importance in osmosis.
• Describe the effects of hypotonic, isotonic, and hypertonic environments on cells.
• Identify mechanisms that cells use to regulate volume and turgor pressure.+ Show more

Learning Objectives

• Understand the basic components of a food web and their roles
• Identify and describe species interactions within aquatic and terrestrial systems
• Recognize factors affecting food web stability and resilience+ Show more

Learning Objectives

• Identify physical change indicators such as form, state, and appearance.
• Differentiate physical changes from chemical changes based on evidence.
• Recognize examples of physical change in environmental phenomena.

Learning Objectives

• Identify and explain factors influencing population size and distribution.
• Recognize examples of population dynamics from Alberta ecosystems.
• Understand how resources, predation, disease, and climate impact populations.

Learning Objectives

• Identify the main structures within a cell and their functions.
• Describe how cell membranes regulate entry and exit of substances.
• Understand the roles of organelles like the nucleus, mitochondria, and chloroplasts.+ Show more

Learning Objectives

• Understand how atoms are depicted in particle diagrams.
• Describe how particles rearrange during chemical reactions.
• Explain how atomic models help interpret observable changes in matter.

Learning Objectives

• Identify different phase changes such as melting, freezing, vaporization, and condensation.
• Understand how phase transitions involve energy exchange and particle arrangement.
• Recognize examples of phase changes occurring in nature and urban settings.

Learning Objectives

• Identify reactants and products in chemical reactions.
• Understand basic principles of stoichiometry and mass conservation.
• Apply proportional reasoning to predict amounts of substances involved in reactions.

Learning Objectives

• Define what a closed system is in scientific experiments.
• Identify examples of closed systems in real-world scenarios.
• Explain the importance of closed systems in controlling variables during experiments.

Learning Objectives

• Understand the structure and function of key cellular organelles.
• Explain how mitochondria produce energy for the cell.
• Identify variations in organelle abundance based on cell type.+ Show more

Learning Objectives

• Understand how climate change impacts temperature regimes across different regions.
• Identify specific ways in which temperature shifts influence ecosystems and species behavior.
• Analyze the broader implications of climate-induced temperature variations on biodiversity and habitat.

Learning Objectives

• Identify potential and kinetic energy in various systems
• Describe the relationship between height, speed, and energy
• Understand how energy is conserved and dissipated in real-world systems

Learning Objectives

• Identify the main components of the solar system.
• Describe the characteristics of the Sun, planets, and other celestial bodies.
• Understand the relative scale and composition of different planets.+ Show more

Learning Objectives

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

Learning Objectives

• Define speed and understand its importance in science.
• Differentiate between constant speed and average speed.
• Apply the concept of proportional reasoning to speed, distance, and time.

Learning Objectives

• Describe particle arrangements in solids, liquids, and gases
• Identify the characteristics that differentiate each state
• Explain how particle energy affects the state of matter+ Show more

Learning Objectives

• Identify and describe key measurable physical properties of matter
• Compare density, solubility, melting point, boiling point, conductivity
• Understand how these properties are used to classify and separate materials+ Show more

Learning Objectives

• Understand the concept of inertia as described by Newton's First Law.
• Identify examples illustrating Newton's first law.
• Differentiate between objects in motion and at rest when no net force acts upon them.

Learning Objectives

• Understand the migration patterns of keystone species like migratory fish.
• Recognize the impact of abiotic factors and human activities on freshwater and marine ecosystems.
• Analyze the effects of environmental changes on fish populations and food web connections.+ Show more

Learning Objectives

• Understand how to identify forces acting on objects in two dimensions.
• Learn to draw free-body diagrams representing normal, gravitational, frictional, and tension forces.
• Analyze forces on inclined planes and decompose vectors into components.+ Show more

Learning Objectives

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

Learning Objectives

• Define density and understand its importance in science.
• Relate mass, volume, and density through numerical examples.
• Differentiate between density, relative density, and specific gravity.+ Show more

Learning Objectives

• Identify and classify different types of rocks: igneous, sedimentary, and metamorphic.
• Understand the processes involved in the rock cycle, such as melting, cooling, sedimentation, compaction, and metamorphism.
• Recognize how geological features like strata, fossils, and radiometric dating serve as evidence of Earth's history.+ Show more

Learning Objectives

• Identify different types of simple machines such as lever, pulley, inclined plane, wheel and axle, wedge, and screw.
• Describe the basic function and purpose of each simple machine.
• Understand how simple machines modify force and direction to make work easier.+ Show more

Learning Objectives

• Distinguish mass as an intrinsic measure of matter from weight as the gravitational force on that mass
• Use the relationship between mass, gravitational acceleration, and weight to explain how weight changes with location
• Apply mass-based and gravity-influenced ideas to real-world contexts such as vehicle load specifications and agricultural dosing

Learning Objectives

• Explain why velocity changes in circular motion even when speed is constant
• Use centripetal force ideas to predict how mass, speed, and radius affect the needed inward force
• Identify real-world examples of centripetal force and consequences when inward force is insufficient

Learning Objectives

• Explain how forces can change mechanical energy through work done on a system
• Describe qualitative relationships between applied force, displacement, and changes in kinetic and potential energy
• Identify energy transfers and transformations during motion, such as lifting, downhill motion, and braking

Learning Objectives

• Explain how exponential growth, logistic regulation, and cyclical fluctuations differ in population dynamics
• Use carrying capacity and time lags to interpret real-world population trajectories
• Describe how predation, food supply, and spatial heterogeneity create source–sink dynamics

Learning Objectives

• Describe how ecosystem models represent matter and energy using stocks, pools, fluxes, and trophic-level connections
• Interpret model outputs by relating assumptions and limitations to observable ecosystem features such as biomass and decomposition rates
• Apply conservation ideas when reasoning about changes in nutrients and energy in ecosystem model frameworks

Learning Objectives

• Explain how energy from primary sources moves through producers, consumers, and decomposers in ecosystems.
• Describe how energy is lost between trophic levels and why this limits population sizes.
• Model how detritivores (decomposers) return matter and energy to the ecosystem through decomposition.+ Show more

Learning Objectives

• Explain balanced and unbalanced force systems using net force and the motion of objects
• Use force symmetry and vector reasoning to predict whether an object remains at rest or accelerates
• Identify real-world examples (bridges, pipelines, tractors) where equilibrium or changing motion occurs

Learning Objectives

• Describe the main stages of the cell cycle, including interphase, mitosis, and cytokinesis.
• Explain how DNA is replicated and how chromosomes are separated during mitosis.
• Identify the roles of cyclins, kinases, and checkpoint mechanisms in preventing genomic instability.+ Show more

Learning Objectives

• Explain how geographic isolation can lead to allopatric speciation.
• Describe the role of environmental change in driving extinction and diversification.
• Identify types of evidence such as fossils and genetics that support models of speciation.+ Show more

Learning Objectives

• Identify forces in a real situation and represent them with correct vectors on a free-body (force) diagram
• Differentiate between balanced and unbalanced net forces and relate them to constant velocity and changing velocity
• Calculate the net force for straightforward one-dimensional systems by combining forces with sign and direction+ Show more

Learning Objectives

• Differentiate kinetic and potential energy and identify where each occurs in mechanical systems.
• Describe how energy can convert between potential and kinetic forms during motion.
• Recognize thermal and acoustic energy as common energy sinks in real mechanical systems.+ Show more

Learning Objectives

• Explain how negative and positive feedback help maintain internal stability (homeostasis).
• Describe how cells and organs use sensors, control centers, and effectors to regulate variables.
• Use examples such as blood glucose and thermoregulation to identify set points and feedback responses.+ Show more

Learning Objectives

• Analyze test data to identify performance trends in design modifications.
• Interpret graphical and statistical outputs to determine effective design characteristics.
• Evaluate trade-offs among various metrics such as efficiency, strength, and durability.+ Show more

Learning Objectives

• Understand the mechanisms of plate tectonics including subduction, rifting, collision, and uplift.
• Identify evidence supporting plate movements such as seafloor spreading and magnetic striping.
• Describe the processes that produce landforms like mountains, ocean basins, and volcanic arcs.+ Show more

Learning Objectives

• Explain Newton’s three laws using cause-and-effect relationships between forces and motion
• Use F = ma to calculate acceleration or interpret how changing mass affects acceleration
• Describe action–reaction pairs and inertia in everyday mechanical situations

Learning Objectives

• Describe the processes involved in the water cycle, including evaporation, condensation, precipitation, infiltration, runoff, and groundwater flow.
• Explain how energy from the Sun and gravity drive the water cycle processes.
• Connect the water cycle to weathering processes such as river incision, karst formation, and coastal erosion.+ Show more

Learning Objectives

• Explain torque using lever arm and moment of force, and determine when rotational equilibrium occurs
• Use the relationship between net torque, rotational inertia, and angular acceleration to predict rotational changes
• Apply rotational analogies of linear motion to gears, wheels, and levers in real situations

Learning Objectives

• Describe the key organelles of prokaryotic and eukaryotic cells and their functions.
• Compare single-celled and multicellular organisms in terms of cellular organization and specialization.
• Explain how microscopy and imaging techniques help to identify cell features and link structures to functions.+ Show more

Learning Objectives

• Describe how gravitational force depends on mass and distance between objects.
• Explain the inverse-square relationship governing gravitational attraction.
• Predict orbital characteristics based on mass and distance parameters.+ Show more

Learning Objectives

• Describe how climate variability affects water systems including precipitation, snowpack, and runoff.
• Explain the consequences of climate change on flood frequency, droughts, and groundwater recharge.
• Analyze the interactions between climate impacts and land-use changes on regional hydrology.+ Show more