Grade 8 Science Worksheets

Learning Objectives

• Explain the relationship between voltage, current, and resistance in simple circuits.
• Describe how material type, temperature, and geometry affect resistance.
• Use the idea of resistance to predict how components heat under load.+ Show more

Learning Objectives

• Calculate average speed for trips with multiple legs using total distance and total time.
• Explain how slower segments affect overall average speed in nonuniform motion.
• Use segmental thinking (distance-time pairs) to justify an average-speed result.

Learning Objectives

• Identify biotic and abiotic components of an ecosystem and describe how they interact
• Explain the roles of producers, consumers, and decomposers in cycling energy and matter
• Use evidence from ecosystem conditions (sunlight, water, soil, temperature) to predict where organisms can live+ Show more

Learning Objectives

• Explain how igneous, sedimentary, and metamorphic rocks form based on Earth processes.
• Describe how mineral properties relate to chemical composition and how minerals appear in different rock types.
• Use evidence from the rock record to connect tectonic activity with long-term Earth change.

Learning Objectives

• Understand the role of predation in shaping population dynamics and community structure.
• Identify behavioral adaptations and refuges that influence predator–prey interactions.
• Describe cascading effects resulting from the absence or recolonization of top predators.+ Show more

Learning Objectives

• Understand the concept of constant speed and how it is represented graphically.
• Calculate distance, speed, and time in uniform motion scenarios.
• Differentiate between instantaneous and average speed.+ 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

• 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

• 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

• 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

• 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 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

• 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

• 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

• 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 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

• 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 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

• 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

• 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

• Understand how gas particles move and collide.
• Explain the relationship between particle motion, pressure, and temperature.
• Describe how temperature affects the speed of gas particles.+ Show more

Learning Objectives

• Explain how reaction time and braking time combine to determine stopping distance.
• Describe how tire-road friction affects decelerating force and stopping distance in different road conditions.
• Compare how unbalanced forces and brake fade can increase the distance needed to stop.

Learning Objectives

• Explain how neurons convert stimuli into electrical signals and transmit them through axons.
• Describe how myelination and synaptic vesicles improve the speed and reliability of neural signaling.
• Connect neuron networks to reflexes, voluntary movement, and gland secretion.

Learning Objectives

• Understand factors influencing population change such as birth rates, death rates, immigration, and emigration.
• Identify patterns of population increase, stability, or decline.
• Explain how reproductive strategies, age structure, and resource availability affect growth rates.+ Show more

Learning Objectives

• Understand how to read and interpret line graphs
• Identify trends and patterns in data visualizations
• Learn the importance of proper labeling and scaling on graphs+ Show more

Learning Objectives

• Explain how invasive species establish and spread in new ecosystems.
• Identify ecological traits that make species invasive.
• Describe the impacts of invasive species on native biodiversity and ecosystem functions.+ Show more

Learning Objectives

• Explain how particle models represent chemical reactions by rearranging bonded atoms into new substances
• Use particle and energy models to predict observable evidence such as gas formation, color change, or temperature change
• Connect conservation of atoms to the idea that the total number of each type of particle is conserved during a reaction

Learning Objectives

• Understand the importance of calibration in measurement tools
• Identify how measurement uncertainty affects results
• Recognize the significance of units and significant figures+ Show more

Learning Objectives

• Understand how keystone species influence food webs and ecosystem stability.
• Analyze the interactions among organisms, abiotic factors, and human activities affecting populations.
• Evaluate the impact of environmental changes and human actions on biodiversity and ecosystem health.+ Show more

Learning Objectives

• Understand how multiple organ systems coordinate to maintain homeostasis.
• Identify the roles of respiratory, circulatory, excretory, and endocrine systems in systemic regulation.
• Explain how cellular structures support organ functions and system integration.+ Show more

Learning Objectives

• Define constant speed and explain its significance in motion.
• Identify constant speed on distance-time graphs.
• Describe real-life examples of constant speed.+ Show more

Learning Objectives

• Explain how intermolecular attractions affect melting point, boiling point, and solubility
• Use the ideas of stronger versus weaker intermolecular forces to predict changes in physical properties
• Connect molecular interactions to real Alberta examples such as freeze–thaw cycles and evaporation

Learning Objectives

• Identify the correct axes, units, and numerical scale for graphs that show relationships between variables.
• Compare scatter plots, line graphs, and bar graphs to determine which graph best matches a data pattern.
• Interpret graphs by describing trends and models without introducing new variables.

Learning Objectives

• Identify the different types of consumers in an ecosystem
• Understand the feeding habits of herbivores, omnivores, and carnivores
• Describe how feeding relationships influence energy flow within communities+ Show more

Learning Objectives

• Describe how herbivores, omnivores, and carnivores fit into trophic positions in food chains.
• Explain how feeding relationships affect energy transfer through a community.
• Compare how omnivory can blur discrete trophic levels compared with strict herbivory or carnivory.+ Show more

Learning Objectives

• Distinguish density-dependent from density-independent factors that change population size
• Explain how competition, disease transmission, and social behavior act as density-dependent regulators
• Describe how weather events and habitat fragmentation can affect populations through density-independent or altered density effects

Learning Objectives

• Explain how centripetal force is directed toward the center of a curved path
• Identify how speed, radius, and mass affect the required centripetal force
• Use force-balance reasoning to predict drift when the inward force is insufficient+ 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 signaling in systemic responses.+ Show more

Learning Objectives

• Explain how aerodynamic drag opposes motion through air as speed increases
• Analyze how vehicle or turbine shape choices change net force and efficiency
• Use drag-related vocabulary to describe practical design decisions

Learning Objectives

• Identify different types of energy involved in physical processes
• Describe how energy transforms from one form to another
• Illustrate real-life examples of energy transfer and transformation

Learning Objectives

• Explain how force and displacement connect to work on a moving object
• Describe how work can change an object’s kinetic and potential energy
• Use examples to identify when energy is transferred by work

Learning Objectives

• Use particle models to explain why atoms are rearranged but conserved during chemical reactions.
• Identify reaction evidence (color change, precipitate, gas formation) that indicates new substances form.
• Explain how conservation of matter applies to closed systems using mass relationships.

Learning Objectives

• Explain how resistance and current behave in series and parallel circuits
• Predict how voltage is distributed across components in series versus parallel arrangements
• Use circuit rules to anticipate brightness and power outcomes in real-world devices