Grade 8 Science Worksheets

Learning Objectives

• Understand the concept of genetic diversity and its importance for populations.
• Identify factors that influence genetic variation within species.
• Explain the consequences of low genetic diversity on species survival.+ Show more

Learning Objectives

• Explain how the water cycle moves water through Earth systems (atmosphere, land, oceans, and organisms).
• Use cause-and-effect reasoning to describe how temperature and energy influence evaporation and precipitation.
• Compare natural water pathways (runoff and infiltration) with human impacts on local water availability.

Learning Objectives

• Identify observable indicators of chemical reactions such as color change, gas evolution, precipitate formation, temperature change, and irreversibility.
• Differentiate between physical and chemical changes based on reaction signs.
• Understand real-life examples of chemical reactions like rusting, combustion, and effervescence.+ Show more

Learning Objectives

• Explain how work depends on the force component along displacement and how the sign of work relates to the direction of motion
• Use the work–energy theorem to connect net work to changes in kinetic energy
• Calculate work for constant forces and describe how to find work for variable forces+ Show more

Learning Objectives

• Describe the organization of cells from membranes to organelles and their functions.
• Explain the roles of the nucleus, mitochondria, and chloroplasts in maintaining cellular activity.
• Compare prokaryotic and eukaryotic cells to understand their structure and function differences.+ Show more

Learning Objectives

• Describe different types of population dynamics including exponential growth, logistic regulation, and cyclical fluctuations.
• Analyze case studies such as snowshoe hare–lynx cycles and forest insect outbreaks to understand real-world population patterns.
• Explain the concepts of carrying capacity, reproductive strategies, and time lags in shaping population trajectories.+ Show more

Learning Objectives

• Describe particle theory: matter is made of tiny particles.
• Explain how particle motion and spacing relate to the properties of solids, liquids, and gases.
• Use Alberta examples to connect temperature to particle motion and state changes.

Learning Objectives

• Identify and describe the layers of the Earth's atmosphere.
• Understand the characteristics and functions of each atmospheric layer.
• Explain the role of ozone, greenhouse gases, and atmospheric pressure in weather and climate.+ Show more

Learning Objectives

• Understand what physical models are and how they are used in science
• Learn about the different types of models such as scale models, force sensors, and simulations
• Recognize the limitations and sources of measurement uncertainty in models+ Show more

Learning Objectives

• Explain how interactions among organisms (predation, competition, disease, and mutualism) influence population size.
• Describe how changes in populations can affect ecosystem stability over time.
• Connect population interactions to changes in energy flow and matter cycling.

Learning Objectives

• Explain how net force is found by combining forces, including forces acting in opposite directions.
• Predict how net force affects acceleration, including changes in speed and direction.
• Use a real-world example (a cart on a smooth track) to justify the direction of motion and acceleration.

Learning Objectives

• Understand the structure and functions of epithelial tissue
• Identify major tissue types: epithelial, connective, muscle, nervous
• Describe cellular components and extracellular matrix in tissues+ Show more

Learning Objectives

• Understand the steps involved in the scientific method and inquiry process.
• Identify key components such as hypotheses, operational definitions, and evidence-based claims.
• Describe how controlled experiments support causal reasoning.+ Show more

Learning Objectives

• Explain how observations and measurements become evidence for a design or claim.
• Compare data from testing to stated criteria to judge whether a solution works.
• Use both quantitative and qualitative evidence to strengthen confidence in results.

Learning Objectives

• Explain how contact time and force magnitude during a collision affect changes in motion
• Describe how deformation can absorb energy during short collisions
• Identify observable effects that relate to the peak force during contact

Learning Objectives

• Describe the relative positions of the Earth, Sun, and Moon during different phases.
• Explain how axial tilt and orbital motion cause seasonal changes.
• Identify the causes of lunar phases, solar eclipses, and lunar eclipses.+ Show more

Learning Objectives

• Explain mechanical energy as the sum of kinetic and potential energy
• Describe how energy transfers occur when forces do work
• Identify how friction and air resistance can convert mechanical energy into thermal energy

Learning Objectives

• Understand the mechanisms of conduction, convection, and radiation in thermal processes
• Identify examples of energy transfer in real-world scenarios
• Explain how energy transfer influences phase changes and temperature changes+ Show more

Learning Objectives

• Analyze the components of forces acting on slopes by resolving gravity into perpendicular and parallel components.
• Understand how slope steepness affects unbalanced forces and potential acceleration.
• Apply vector decomposition concepts to real-world inclined scenarios.

Learning Objectives

• Explain why calibration and instrument accuracy affect motion and force measurements.
• Estimate uncertainty and interpret results using significant figures.
• Compare repeatability and reliability when measurements change across trials.+ Show more

Learning Objectives

• Differentiate physical and chemical changes using particle-level reasoning.
• Identify observable chemical indicators such as gas production, color change, and precipitate formation.
• Use evidence-based claims to decide whether a new substance formed.

Learning Objectives

• Explain the three core statements of cell theory and how they apply to living things
• Describe how microscopy and imaging evidence helped scientists develop cell theory
• Use key cell theory vocabulary (cell, nucleus, organelle, pre-existing cells) to answer science questions

Learning Objectives

• Understand the processes involved in Earth's rock cycle.
• Identify different types of rocks and how they transform from one form to another.
• Explain how Earth's materials cycle through various Earth systems over time.+ Show more

Learning Objectives

• Understand the different design concepts for solutions such as helmets and lighting systems.
• Learn to evaluate and compare solutions using measurable performance indicators.
• Develop skills to create concept sketches, trade-off matrices, and assess solutions qualitatively and quantitatively.+ Show more

Learning Objectives

• Identify and use SI units for mass, length, volume, and temperature.
• Convert between common metric units and report measured values with appropriate significant figures.
• Distinguish accuracy from precision and explain how measurement uncertainty affects results.+ Show more

Learning Objectives

• Understand the definition of density as mass per unit volume.
• Learn how to calculate density using SI units.
• Identify the relationship between density, buoyancy, and object sinking or floating.+ Show more

Learning Objectives

• Define power as the rate of doing work.
• Explain units of power, specifically watts.
• Relate mechanical systems' performance to power output.+ Show more

Learning Objectives

• Identify the main idea and key details about atmospheric layers.
• Describe how pressure and temperature change with altitude.
• Explain why ozone and greenhouse gases matter in different layers.

Learning Objectives

• Explain how forces (pushes and pulls) change an object’s motion, including speed and direction
• Determine how balanced and unbalanced forces relate to stable motion or changes in velocity
• Use the idea of net force to predict the direction and effect of forces acting on an object

Learning Objectives

• Identify common forces in a free-body diagram and choose their correct vector directions.
• Explain how normal, gravitational, friction, and tension forces act in everyday motion.
• Describe how net force and friction affect acceleration on ramps and in hanging-mass situations.

Learning Objectives

• Explain how density-dependent factors affect population size through changes in competition, disease, and social behavior.
• Compare density-dependent and density-independent factors and predict how each can influence population change.
• Use examples from Alberta habitats to describe how weather and habitat conditions regulate populations.+ Show more

Learning Objectives

• Select appropriate variables and controls for a fair investigation in applied science contexts.
• Design a comparative procedure and collect reliable data while following safety and ethics guidelines.
• Use graphs and simple statistical summaries to support a conclusion based on evidence.

Learning Objectives

• Identify observable reaction signatures of chemical change (temperature change, precipitate, colour change, gas release).
• Explain how combining multiple indicators increases confidence that a chemical change occurred.
• Apply reaction-signature ideas to environmental and industrial examples.

Learning Objectives

• Represent forces acting on an object using a free-body diagram with correct directions and relative sizes
• Identify and interpret the gravitational, normal, frictional, and applied forces in real-world scenarios
• Determine the direction of net force by reasoning with vector arrows (without focusing on calculations)

Learning Objectives

• Define fluid pressure as force per unit area and identify its SI unit
• Explain how contact area affects surface pressure and how pressure acts within fluids
• Use the relationship between newtons per square metre and kilopascals+ Show more

Learning Objectives

• Explain how DNA sequence information is used to produce proteins and how proteins help determine observable traits.
• Describe the roles of genes, coding sequences, transcription, and translation in the inheritance of traits.
• Model how mutations (point mutations and frameshifts) can change amino acid sequences and affect protein function.+ Show more

Learning Objectives

• Explain the concept of power as energy transfer per unit time.
• Compare the efficiency of different electrical devices and systems.
• Identify loss mechanisms such as resistive heating, transformer losses, and transmission dissipation.+ Show more

Learning Objectives

• Identify observable indicators of chemical reactions such as color change, gas evolution, and precipitate formation.
• Differentiate between chemical and physical changes based on reaction evidence.
• Explain how conservation concepts relate to observable reaction indicators in closed systems.

Learning Objectives

• Understand how birth rates, death rates, immigration, and emigration influence population change.
• Identify and analyze factors that contribute to population increase, stability, or decline.
• Interpret demographic models and measures used to assess population dynamics.+ Show more

Learning Objectives

• Identify the basic units of matter: atoms and molecules.
• Recognize symbols and formulas used to represent atoms and molecules.
• Understand the role of atomic structure and bonding in chemical reactions.+ Show more

Learning Objectives

• Differentiate endothermic and exothermic reactions using evidence from the surroundings’ temperature changes.
• Explain energy changes using a particle and bonding model (breaking bonds vs. forming bonds) rather than an external energy “source.”
• Use correct vocabulary (thermal energy, surroundings, bonds, reactants, products) to describe energy flow in reactions.

Learning Objectives

• Explain how the hydrologic cycle links precipitation, surface water, and groundwater in a large basin
• Describe watershed connectivity and how nutrients, contaminants, and invasive species can move through water systems
• Analyze groundwater–surface water exchange and how monitoring supports adaptive management+ Show more

Learning Objectives

• Explain how technology choices can affect people and the environment across a product’s life cycle.
• Identify trade-offs between benefits and harms when evaluating technological solutions.
• Use evidence to justify whether a technology decision is responsible and sustainable.

Learning Objectives

• Identify physical, chemical, and biological water quality indicators.
• Interpret ranges of indicator parameters for aquatic health and water uses.
• Understand sources of variability and the importance of integrated assessments.+ Show more

Learning Objectives

• Explain what measurement uncertainty means and why it happens
• Identify how instrument resolution affects readings
• Describe how to report uncertainty using correct significant figures+ Show more

Learning Objectives

• Identify clues that show whether a change is physical or chemical.
• Classify described evidence from a text using the properties of matter.
• Explain how physical and chemical changes differ using evidence such as state, new substances, and observable energy or gas effects.

Learning Objectives

• Distinguish kinetic energy from potential energy and identify which one changes with motion or position.
• Explain how gravitational potential energy and kinetic energy shift during roller-coaster-like motion.
• Apply the idea of energy conservation (or near conservation) to predict what happens to total mechanical energy.

Learning Objectives

• Identify major organelles within a cell
• Describe the primary functions of the nucleus, mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, and vacuoles
• Understand how these organelles work together in energy conversion, protein synthesis, and intracellular transport