Grade 8 Science Worksheets

Learning Objectives

• Identify and distinguish first-, second-, and third-class levers based on the positions of the fulcrum, input force (effort), and output force (load).
• Calculate mechanical advantage using the distances from the fulcrum and relate it to input/output forces.
• Explain trade-offs between force amplification and range of motion, including real-world limits such as friction and structural deformation.

Learning Objectives

• Explain how Pascal’s principle transmits pressure through confined fluids
• Calculate output force changes from differences in piston areas
• Predict pressure changes when input piston area changes+ Show more

Learning Objectives

• Describe the key differences between plant and animal cells.
• Identify the functions of cellular components like cell walls, chloroplasts, and lysosomes.
• Compare prokaryotic and eukaryotic cells in terms of organization.+ Show more

Learning Objectives

• Define what a force is and describe how it changes an object's motion.
• Identify different types of forces such as gravity, air resistance, and contact forces.
• Explain how multiple forces combine to produce a net force.+ Show more

Learning Objectives

• Compare plant and animal cell structures and explain how those structures support different functions
• Identify key differences between prokaryotic and eukaryotic cell organization and relate them to metabolism and complexity
• Explain how major organelles (cell wall, chloroplasts, vacuole, plasmodesmata, centrioles, lysosomes) affect cellular roles in living systems

Learning Objectives

• Explain how population growth depends on birth rates and death rates
• Identify cause-and-effect in descriptions of population change
• Describe why exponential growth cannot continue forever

Learning Objectives

• Represent simple molecules using element symbols and molecular formulas.
• Interpret subscripts to determine atom counts within molecular units.
• Compare discrete molecular units with extended ionic lattices.+ Show more

Learning Objectives

• Understand the principles of momentum exchange during collisions.
• Differentiate between elastic and inelastic collisions based on energy conservation.
• Apply the concept of impulse to analyze velocity changes in colliding objects.+ Show more

Learning Objectives

• Understand what structural adaptations are and identify examples in animals.
• Describe how physical features help animals survive in their environments.
• Differentiate between structural, behavioral, and physiological adaptations.+ Show more

Learning Objectives

• Describe constant speed as equal distances covered in equal successive time intervals
• Interpret distance-time graphs to identify constant speed and changes in speed
• Use the relationship distance = speed × time to solve problems involving constant speed

Learning Objectives

• Explain Bernoulli’s principle using the relationship between fluid speed and pressure in streamlined, incompressible flow.
• Use the continuity idea and Bernoulli’s equation qualitatively to predict how pressure changes as flow speed changes.
• Apply Bernoulli’s principle to real situations such as Venturi tubes and airplane wing lift.+ Show more

Learning Objectives

• Distinguish between static and kinetic friction
• Explain how surface texture, normal force, and material pairing affect friction
• Describe how friction opposes relative motion and leads to heat and wear

Learning Objectives

• Explain the process of phase transitions between solid, liquid, and gas states.
• Identify examples of phase changes in natural and urban environments.
• Describe how energy exchange and pressure influence phase changes.+ Show more

Learning Objectives

• Explain how organ systems help organisms obtain nutrients, exchange gases, balance water, and move materials
• Identify key structures in major organ systems and match them to their functions
• Use evidence from scenarios to predict how changes in organ systems affect survival+ Show more

Learning Objectives

• Describe how five body systems contribute to homeostasis
• Explain how feedback mechanisms maintain stable internal conditions
• Trace insulin–glucagon signaling as a homeostatic feedback process+ Show more

Learning Objectives

• Use appropriate tools and units to measure quantities in science accurately.
• Distinguish accuracy and precision and explain how procedures affect measurement quality.
• Record measurements with consistent significant figures and methods.+ Show more

Learning Objectives

• Understand the difference between static and kinetic friction.
• Identify factors that influence frictional force.
• Analyze how surface texture and normal force affect friction.+ Show more

Learning Objectives

• Understand the basic components of an atom: protons, neutrons, and electrons.
• Distinguish between elements and compounds based on atomic structure.
• Identify the organization of the periodic table and its significance.+ Show more

Learning Objectives

• Explain how particle motion relates to gas temperature and pressure
• Describe how higher temperature affects collision frequency and force in a container
• Use particle ideas to interpret real-world temperature and pressure observations

Learning Objectives

• Explain energy stored by the arrangement of objects interacting at a distance, including gravitational, elastic potential energy, and magnetic interactions.
• Describe how changes in relative positions affect stored energy in systems like compressed springs, elevated masses, and magnets.
• Relate potential energy magnitude to system variables such as height, spring compression, and magnetic distance, and discuss energy conversion when configurations change.

Learning Objectives

• Understand the purpose of physical and computational models in science.
• Identify various types of models such as scale models and simulations.
• Recognize the limitations and sources of measurement uncertainty in models.+ Show more

Learning Objectives

• Understand the concept of conservation of mass in closed systems.
• Identify the differences between open and closed systems in chemical reactions.
• Apply the principles of mass conservation to real-world chemical scenarios.+ Show more

Learning Objectives

• Explain how trophic positions (herbivores, omnivores, carnivores) determine feeding relationships in food chains and food webs.
• Describe how energy transfer patterns and feeding modes affect how organisms respond to environmental change.
• Use examples from Alberta (bison, songbirds, wolves) to classify consumers by trophic level.

Learning Objectives

• Identify sources of genetic variation in species
• Understand how variation influences natural selection
• Examine evidence for evolution such as fossil records and comparative anatomy+ Show more

Learning Objectives

• Explain the idea of a closed system and what counts as the system boundary.
• Identify key details about conservation of mass during physical and chemical changes.
• Use conservation of mass to reason about total mass before and after a change in a sealed setup.

Learning Objectives

• Understand the concept of magnetic fields and how they are visualized.
• Identify sources of magnetic fields and their properties.
• Describe how changing magnetic flux induces an electromotive force.+ Show more

Learning Objectives

• Explain particle theory using the ideas that matter is made of discrete particles and that particles have motion.
• Relate particle arrangement and motion to observable properties such as rigidity, flow, and compressibility.
• Use examples (like frozen rivers and prairie fog) to describe how temperature affects particle motion and state changes.

Learning Objectives

• Interpret earthquake and volcanic eruption history data
• Estimate recurrence intervals from natural hazard records
• Explain hazard risk using faults, tsunami records, and monitoring+ Show more

Learning Objectives

• Explain how net force is determined when multiple forces act in different directions.
• Predict how balanced and unbalanced forces affect an object’s acceleration and motion.
• Use weight and friction as examples of forces that can change an object’s motion.+ Show more

Learning Objectives

• Differentiate homogeneous mixtures from heterogeneous mixtures using macroscopic observations
• Explain how solubility and concentration affect the composition of a solution
• Apply the idea of uniform composition to sampling and environmental impact decisions

Learning Objectives

• Explain how physical and chemical weathering change rocks at Earth’s surface
• Describe how erosion transports material by wind, moving water, ice, and gravity
• Connect deposition and lithification to the formation of new sedimentary rock+ Show more

Learning Objectives

• Define and explain constant speed and its graphical representation.
• Calculate distance, speed, and time relationships during uniform motion.
• Identify practical examples of constant speed in everyday life.+ Show more

Learning Objectives

• Explain how temperature, concentration, and surface area affect reaction rate using the particle-collision model
• Describe the role of catalysts in changing reaction rate without being used up
• Connect macroscopic changes (what you measure) to microscopic particle behavior (collisions and rearrangements)

Learning Objectives

• Understand the basic features and functions of cell organelles
• Compare prokaryotic and eukaryotic cells
• Distinguish between single-celled and multicellular organisms+ Show more

Learning Objectives

• Explain what constant speed means using distance-time graphs and proportional reasoning.
• Interpret changes in slope on a distance-time graph as changes in speed and acceleration.
• Calculate distance using speed and time, and compare average speed in non-uniform motion.

Learning Objectives

• Describe the major tissue types and their cellular and extracellular components.
• Explain the structural-functional relationships in epithelial, connective, muscle, and nervous tissues.
• Understand how tissue organization contributes to organ functions such as transport, movement, and signal transmission.+ Show more

Learning Objectives

• Understand how abiotic factors influence the distribution and performance of species in various environments.
• Analyze the effects of abiotic variations such as temperature, water, and soil on ecosystems.
• Evaluate how changes in abiotic conditions can impact community composition and ecosystem functions.+ Show more

Learning Objectives

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

Learning Objectives

• Explain how energy moves through a food web using multiple feeding relationships.
• Describe direct and indirect effects when one population changes in an ecosystem.
• Use food-web pathway thinking to predict possible outcomes at different trophic levels.

Learning Objectives

• Compare hypothesis-driven, descriptive, and correlational inquiry models and identify what each model is meant to explain or predict.
• Describe how boundary conditions, underlying assumptions, and limitations affect what a scientific model can claim.
• Use empirical evidence to iteratively refine a model and justify testable predictions using conceptual and mathematical representations.

Learning Objectives

• Understand the structure and function of various organ systems in the human body.
• Explain how organs work together within systems to maintain internal stability.
• Identify the main organs involved in the respiratory, circulatory, and other key systems.+ Show more

Learning Objectives

• Represent forces using free-body diagrams, including normal, gravitational, frictional, and tension forces with correct vector directions.
• Decompose forces on inclined planes into components and use them to determine net force.
• Explain how static friction differs from kinetic friction and how friction affects motion outcomes.

Learning Objectives

• Explain how heat is transferred through conduction, convection, and radiation.
• Understand the concept of specific heat capacity and how it affects temperature change.
• Relate microscopic particle motion to macroscopic temperature measurements.+ Show more

Learning Objectives

• Understand the concept of forces as push or pull interactions
• Identify different types of forces, such as push and pull
• Learn how forces affect the motion of objects+ Show more

Learning Objectives

• Evaluate evidence for changes in global temperature over time using both modern observations and paleoclimate records
• Explain how greenhouse gas concentrations, volcanic aerosols, solar variability, and climate feedbacks act as climate drivers
• Distinguish natural drivers from human (anthropogenic) influences by interpreting lines of evidence and model comparisons

Learning Objectives

• Explain how matter cycles between living and nonliving parts of an ecosystem
• Describe how decomposition, gas exchange, and soil nutrient transformation return elements to the environment
• Trace how producers and consumers transfer the same atoms through multiple generations

Learning Objectives

• Formulate a testable hypothesis and identify independent and dependent variables in an experiment.
• Write operational definitions and choose measurable criteria for collecting reliable data.
• Design controls, replication, and measurement methods to reduce confounding factors and improve reproducibility.

Learning Objectives

• Understand the differences between renewable and nonrenewable resources.
• Identify various resource types and their environmental impacts.
• Learn the importance of sustainable resource use.