Grade 8 Science Worksheets

Learning Objectives

• Explain how genetic variation arises from recombination during sexual reproduction and from mutations
• Describe how alleles inherited from parents can produce new trait combinations in offspring
• Connect trait variation in populations to the role of natural selection under different environmental conditions

Learning Objectives

• Understand the basic definition of speed as distance divided by time.
• Differentiate between constant speed and average speed.
• Apply proportional reasoning to understand how doubling or halving speed affects travel time.+ Show more

Learning Objectives

• Explain Newton’s three laws of motion and identify inertia and action–reaction force pairs in mechanical situations.
• Use Newton’s second law (F = ma) to calculate acceleration and interpret how mass affects motion.
• Apply Newton’s laws to single-object and two-object systems, including key assumptions and common limitations.

Learning Objectives

• Understand how height affects gravitational potential energy
• Identify different types of stored energy such as elastic and magnetic
• Explain how changes in position or configuration alter stored energy+ Show more

Learning Objectives

• Describe the functions and structural features of major cell organelles.
• Explain how organelles work together to perform cellular processes such as energy production, protein synthesis, and intracellular transport.
• Identify the consequences of organelle dysfunction on overall cell performance.

Learning Objectives

• Identify observable indicators of chemical reactions from experimental evidence
• Distinguish chemical reactions from physical mixing using observed properties
• Interpret qualitative and quantitative evidence from reaction observations+ Show more

Learning Objectives

• Explain how invasive species can disrupt native species through competition, predation, and disease.
• Describe how changes in community composition can alter energy flow and nutrient cycling in ecosystems.
• Use evidence from a passage to identify main ideas and interpret scientific statements.

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

• Identify different measures of variability such as range and standard deviation
• Calculate the range of a data set
• Interpret variability and what it indicates about experimental data+ Show more

Learning Objectives

• Understand the structure and function of the circulatory system
• Identify key components such as blood, heart, and vessels
• Explain how tissues form organs involved in circulation+ Show more

Learning Objectives

• Understand how pollution alters ecosystem chemistry and nutrient cycles.
• Identify the consequences of excess nutrients and persistent contaminants.
• Trace pollution sources, pathways, and bioaccumulation in ecosystems.+ Show more

Learning Objectives

• Choose appropriate statistics (center and spread) to summarize experimental data and explain what they mean
• Interpret correlation values and describe how scatterplots relate to the strength and direction of relationships
• Use basic hypothesis-testing logic to support conclusions from data, without advanced inference tools

Learning Objectives

• Understand different types of friction, including static and kinetic friction.
• Analyze how surface texture and normal force influence frictional forces.
• Evaluate the effects of aerodynamic drag on system performance.+ Show more

Learning Objectives

• Explain how Pascal’s principle allows pressure to be transmitted through a confined fluid
• Calculate and interpret force multiplication using piston area and hydraulic pressure
• Describe how hydraulic systems apply force remotely and why seals and fluid properties matter+ 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

• Identify and classify independent, dependent, and controlled variables in experiments.
• Understand the importance of fair testing and proper control selection.
• Describe how instrumentation and procedural constraints affect reproducibility.+ 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

• Understand predator-prey relationships and their importance in ecosystems
• Identify examples of predation and its effects on populations
• Analyze the role of predators in maintaining ecological balance

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

• Calculate and interpret mean, median, mode, percent change, and rates from data
• Use slope and basic linear regression to quantify relationships between variables
• Estimate and communicate uncertainty and explain how it affects conclusions

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

• Understand geological processes like plate tectonics, sedimentation, and metamorphism that influence resource formation.
• Identify different types of resource reservoirs such as coal basins, oil traps, and aquifers.
• Analyze how resource accessibility and quality vary based on geological and structural factors.+ Show more

Learning Objectives

• Explain how hydraulic systems use confined fluids to transmit pressure and produce larger output forces.
• Use force-area relationships to calculate required input pressure and identify mechanical advantage in piston assemblies.
• Evaluate design constraints such as fluid viscosity, seal effectiveness, and compressibility that affect performance and reliability.

Learning Objectives

• Describe how mechanical and chemical processes work together in digestion
• Identify tissue types involved in digestion and their functions
• Explain how nutrients are transported through the circulatory system to cells+ Show more

Learning Objectives

• Understand the molecular basis of inheritance by linking DNA sequence to proteins and traits.
• Explain gene structure, including coding sequences, transcription, and translation.
• Describe how mutations affect amino acid sequences and protein function.+ Show more

Learning Objectives

• Understand how pressure varies with depth on submerged surfaces
• Learn methods to determine net force and pressure distribution
• Apply pressure concepts to practical structures like dams and bulkheads

Learning Objectives

• Explain how models can be used to test design ideas and compare results to expectations.
• Use evidence from model outputs to refine a design and justify which features are likely to improve performance.
• Describe how comparing alternatives in a model can reveal causes of performance changes.

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 particle motion relates to temperature and states of matter.
• Describe phase changes such as melting, boiling, and condensation based on microscopic particle behavior.
• Explain how heat transfer causes changes in the energy of particles during state transitions.+ 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

• Understand how natural resources are transformed into synthetic materials like plastics.
• Recognize the relationship between source materials, molecular structure, and material properties.
• Evaluate environmental considerations associated with sourcing and processing materials.

Learning Objectives

• Explain how faults generate earthquakes and identify different fault types.
• Describe how seismic waves propagate and how they are recorded.
• Differentiate between earthquake magnitude and intensity.+ Show more

Learning Objectives

• Understand how body systems work together to maintain homeostasis.
• Identify the functions of circulatory, respiratory, digestive, nervous, and endocrine systems.
• Explain key processes such as gas exchange, nutrient distribution, and blood glucose regulation.+ 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

• Identify and describe the key features of plant cells.
• Understand the differences between plant and animal cells.
• Explain how cellular structures support specific physiological functions like photosynthesis.

Learning Objectives

• Understand the principles of ecological restoration in Alberta contexts.
• Identify different restoration methods such as habitat reclamation and species reintroductions.
• Explain the processes of soil amendment and land recontouring in ecosystem recovery.+ Show more

Learning Objectives

• Define dynamic viscosity and kinematic viscosity and describe how they relate to fluid flow.
• Explain how viscosity affects whether flow in a pipe is smooth (laminar) or more chaotic (turbulent).
• Predict how temperature and shear (forces between layers) can change viscosity and pumping needs.+ Show more

Learning Objectives

• Explain the difference between fixed, movable, and compound (block-and-tackle) pulley systems in terms of how they change input force and direction of pull
• Calculate and interpret the ideal mechanical advantage of common pulley arrangements and relate it to the number of rope segments supporting the load
• Describe how friction and rope stretch reduce real mechanical advantage compared with ideal calculations+ 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

• Describe how gravitational and elastic potential energy depend on position or deformation in a system.
• Explain how magnetic interactions change stored energy when magnets’ relative positions change.
• Connect changes in configuration to the amount of energy that is available to convert during motion or interaction.

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

• Explain how electric forces and magnetic forces can be described using field interactions.
• Use Coulomb-like and distance-orientation ideas to predict how force magnitude changes with separation.
• Identify how charge, pole orientation, and current/circuit details affect the direction of forces.