Grade 8 Science Worksheets

Learning Objectives

• Understand what scientific models are
• Identify different types of models used in science
• Learn how models help explain scientific concepts and predict outcomes+ Show more

Learning Objectives

• Understand key principles of ecological restoration and mitigation techniques in Alberta.
• Identify different approaches used for habitat reclamation and species reintroduction.
• Explain the importance of monitoring recovery metrics and expected timeframes for ecosystem recovery.+ Show more

Learning Objectives

• Use quantitative evidence to argue how population growth and per-capita consumption can change Earth systems.
• Explain cause-and-effect links among resource use, land-cover change, greenhouse gas emissions, and water or nutrient cycles.
• Synthesize multiple lines of evidence to support a claim about impacts on climate, biodiversity, and water availability.

Learning Objectives

• Identify key abiotic factors that influence ecosystems and species distributions.
• Understand how seasonal and microhabitat variations create different ecological niches.
• Explain how abiotic conditions interact with biological traits to affect survival and community composition.+ Show more

Learning Objectives

• Explain how collisions transfer and transform energy between objects and into internal energy.
• Compare elastic and inelastic collisions using kinetic energy and mechanical energy ideas.
• Use momentum conservation to predict motion changes even when kinetic energy changes.

Learning Objectives

• Understand the role of cell membranes in controlling exchange of substances.
• Identify how membrane composition and surface area influence diffusion and signaling.
• Explain how membrane transport processes support cell energy balance and communication.+ Show more

Learning Objectives

• Understand different types of graphical and tabular data representations.
• Interpret trends, slopes, and patterns in line graphs.
• Identify appropriate data representations for different variables.+ Show more

Learning Objectives

• Explain why models are used to study problems before building or testing a full design.
• Identify common types of models (physical, graphical, and computational) and describe what each can represent.
• Use a model to make predictions about how design changes may affect results.

Learning Objectives

• Explain how ballast tanks change a submarine’s buoyancy by altering displaced volume and internal mass
• Describe neutral buoyancy and why it matters for submerged navigation and depth control
• Evaluate how stability (trim) and external pressure affect safe ballast operation

Learning Objectives

• Identify different forms of energy present in mechanical systems.
• Explain the roles of kinetic and potential energy in system behavior.
• Describe energy storage methods such as springs and elevated masses.+ Show more

Learning Objectives

• Understand different types of species interactions such as predation, competition, mutualism, and parasitism.
• Explain how species interactions influence population sizes and community structure.
• Identify examples of positive and negative relationships among organisms.+ Show more

Learning Objectives

• Understand how multiple organ systems coordinate to maintain homeostasis.
• Identify key interactions between respiratory, circulatory, excretory, and endocrine systems.
• Explain the role of cellular structures and inter-system communication in systemic regulation.+ Show more

Learning Objectives

• Describe the processes involved in Earth's material cycles, including the rock cycle and mantle convection.
• Explain how Earth's surface interactions and energy sources influence geosphere, hydrosphere, and atmosphere.
• Model the transfer of Earth's materials and energy over different time scales using schematic and physical representations.+ Show more

Learning Objectives

• Understand what pH and chemical indicators are
• Identify how chemical reactions can change properties like pH, conductivity, density, and refractive index
• Distinguish between physical changes and chemical reactions based on property shifts+ Show more

Learning Objectives

• Identify success criteria in engineering design problems
• Recognize constraints within engineering tasks
• Understand the difference between criteria and constraints+ Show more

Learning Objectives

• Explain how climate variability and change can alter water systems through precipitation, snowpack, and evapotranspiration
• Describe how changes in runoff timing can affect flood frequency, drought risk, groundwater recharge, and reservoir storage
• Connect land-use change and feedbacks to regional hydrology with consequences for aquatic ecosystems and water infrastructure

Learning Objectives

• Represent forces on a free-body diagram using correct vector directions for normal, gravity, friction, and tension.
• Resolve forces into components for motion on inclined planes and compute net force qualitatively or quantitatively.
• Explain how the resultant (net) force determines acceleration, and compare static versus kinetic friction.

Learning Objectives

• Distinguish heterogeneous and homogeneous mixtures based on observable properties
• Explain how solute dissolves in a solvent to form a solution and describe saturation and solubility
• Use separation techniques such as filtration, evaporation, and distillation to separate mixture components

Learning Objectives

• Explain the structure and function of various human organ systems.
• Identify how organs collaborate within systems to perform complex functions.
• Describe the importance of cellular specialization and communication pathways in maintaining internal stability.+ Show more

Learning Objectives

• Understand the concept of homeostasis and its importance in maintaining internal stability.
• Explain how negative and positive feedback mechanisms regulate body processes.
• Identify examples of homeostatic control such as thermoregulation and blood glucose regulation.+ Show more

Learning Objectives

• Understand what craters indicate about the age of planetary surfaces.
• Identify features of cratered and resurfaced terrains.
• Explain how erosion and atmospheric effects influence surface features.+ Show more

Learning Objectives

• Identify kinetic energy and gravitational potential energy and describe how they depend on an object’s speed, mass, and height.
• Use relationships and graphs to predict how changing speed or elevation affects stored energy.
• Explain how observable motion (such as a roller coaster crest and dip) connects to energy changes in an ideal system.

Learning Objectives

• Understand the principles of thermal conduction, convection, and radiation.
• Describe strategies for minimizing or maximizing thermal energy transfer in systems.
• Explain how material properties and system geometry influence heat flow.+ Show more

Learning Objectives

• Explain how changing magnetic flux can induce an electromotive force (emf) in a closed circuit
• Describe how induced voltage depends on the rate of flux change and the number of turns in a coil
• Connect electromagnetic induction to real devices such as transformers and generators

Learning Objectives

• Understand how cells develop unique structures and roles to perform specific biological tasks.
• Identify examples of specialized cells and their structural features.
• Explain how modifications at the cellular level support cell function and organism performance.

Learning Objectives

• Explain how models can be used to test design ideas and predict outcomes.
• Describe how model results provide evidence that supports refining design features.
• Compare alternative designs using model-based outputs to improve performance.

Learning Objectives

• Explain how relative positions of the Moon, Earth, and Sun produce lunar phases and relate these to the synodic period and sidereal period.
• Describe the geometry and conditions required for lunar and solar eclipses, including orbital alignment.
• Model how the Moon and Sun’s differential gravity creates ocean tides, and distinguish spring tides from neap tides.

Learning Objectives

• Understand the purpose of physical and computational models in generating quantitative data.
• Identify different types of models used in scientific investigation, including scale models and simple simulations.
• Explain the importance of consistent input conditions, repeatability, and proper data recording practices.+ Show more

Learning Objectives

• Understand the concept of speciation and reproductive isolation
• Identify causes that contribute to the formation of new species
• Explain how genetic variation and natural selection influence divergence+ Show more

Learning Objectives

• Understand the distribution and proportions of freshwater and saline reservoirs globally.
• Describe how climate, topography, and geology influence water storage patterns.
• Analyze the implications of uneven freshwater distribution for human use and regional water security.+ Show more

Learning Objectives

• Identify major organelles in a cell
• Understand energy conversion processes in mitochondria
• Describe the function of the nucleus and ribosomes+ Show more

Learning Objectives

• Explain how human activities can change Earth systems by altering energy and matter in the atmosphere, hydrosphere, and geosphere.
• Describe how greenhouse-gas emissions can influence temperature patterns, precipitation, and storm behavior.
• Analyze how land-use change can affect runoff, erosion, and water quality.+ Show more

Learning Objectives

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

Learning Objectives

• Explain the processes involved in nutrient cycling in ecosystems, including decomposition, mineralization, nitrogen fixation, and sedimentation.
• Identify the roles of decomposers and factors influencing nutrient cycling rates.
• Describe how human activities impact nutrient flow and ecosystem productivity in wetlands and river valleys.+ Show more

Learning Objectives

• Understand the fundamental concepts of measurement accuracy and precision.
• Identify appropriate SI units and convert between units using dimensional analysis.
• Estimate significant figures in measurements and report values with proper notation.+ Show more

Learning Objectives

• Define dynamic viscosity and kinematic viscosity and explain how they relate to fluid flow.
• Describe how temperature and shear affect viscosity and flow patterns.
• Explain, qualitatively, how viscosity influences flow rate through pipes and related engineering choices.+ Show more

Learning Objectives

• Define mechanical efficiency as useful output energy divided by input energy and interpret what it means when losses occur.
• Explain how frictional heating, sound emission, and material hysteresis reduce efficiency in mechanical systems.
• Identify practical ways engineers measure energy losses and choose design strategies to reduce dissipation while managing cost and complexity.

Learning Objectives

• Explain how innate and adaptive immune responses help protect the body from pathogens
• Describe the roles of phagocytic cells, antigen-presenting cells, and lymphocytes in immune defense
• Connect how immune cells travel and interact in lymphoid organs to effective responses during infection

Learning Objectives

• Explain how neurons transmit rapid signals in the nervous system.
• Describe cellular features such as myelination and synapses that enhance neural signaling.
• Understand how neuron networks form circuits controlling reflexes, movements, and gland secretion.+ Show more

Learning Objectives

• Understand the concepts of position and distance.
• Differentiate between scalar and vector quantities.
• Interpret simple distance–time and velocity–time graphs.+ Show more

Learning Objectives

• Understand the importance of clear, evidence-based scientific communication.
• Identify proper use of scientific conventions in graphs, tables, and citations.
• Apply claim–evidence–reasoning structures to scientific explanations.+ Show more

Learning Objectives

• Explain why total mass remains constant in a closed system during a chemical process.
• Interpret qualitative evidence for mass conservation using reactants and products in sealed/container examples.
• Use careful reasoning to connect macroscopic observations (mass changes, trapped gases/solids) to conservation of matter.

Learning Objectives

• Identify different types of adaptations in animals and plants
• Understand how adaptation influences population change
• Recognize examples of adaptation in real-world scenarios+ Show more

Learning Objectives

• Interpret graphical data and identify performance trends
• Analyze test results to determine effective design modifications
• Understand trade-offs among different design metrics+ Show more

Learning Objectives

• Classify levers into first-, second-, and third-class based on the locations of fulcrum, input force, and output force
• Explain how moment balance determines mechanical advantage in ideal levers
• Calculate mechanical advantage using distances from the fulcrum+ Show more

Learning Objectives

• Identify observable evidence of physical changes
• Distinguish between physical and chemical changes based on observable signs
• Apply understanding of physical change indicators to various examples

Learning Objectives

• Understand the concept of power as the rate of doing work measured in watts.
• Apply the relationship between torque, rotational speed, and output power in mechanical systems.
• Compare electrical motor power ratings with actual mechanical output considering efficiency and losses.+ Show more

Learning Objectives

• Understand criteria for developing and evaluating multiple solution concepts.
• Differentiate solutions based on measurable performance indicators.
• Apply trade-off matrices and qualitative versus quantitative assessment methods.+ Show more