Grade 9 Science Worksheets

Learning Objectives

• Define electric current, voltage, and resistance using correct symbols and SI units.
• Use quantitative reasoning to connect current, voltage, and resistance to circuit behavior and power.
• Interpret typical values and instrument readings related to electrical quantities in everyday Alberta contexts.

Learning Objectives

• Use observed symptoms and measurement data to infer likely electrical failure modes (open circuits, short circuits, or degraded components).
• Relate circuit topology (series/parallel paths and component placement) to diagnostic reasoning outcomes.
• Evaluate whether a given measurement pattern best supports an open circuit, a short circuit, or component degradation.

Learning Objectives

• Explain how magnetic field lines indicate direction and relative strength around magnets and currents
• Apply the right-hand rule to predict magnetic field orientation for a current-carrying wire
• Describe how magnetic forces and torque relate to magnetic devices such as motors and electromagnets+ Show more

Learning Objectives

• Explain how electric motors convert electrical energy into mechanical work using electromagnetic forces.
• Describe how generators use electromagnetic induction to convert mechanical work into electrical energy.
• Match motor/generator performance characteristics (voltage, current, torque, speed, flux) to typical load requirements.

Learning Objectives

• Explain how power distribution systems move electricity from transmission lines to consumers through substations and feeders
• Describe the role of voltage transformation in reducing losses and improving safe delivery
• Analyze how feeder topology and protection systems affect reliability and the spread of faults+ Show more

Learning Objectives

• Explain how grounding and overcurrent protection reduce electrical hazards
• Interpret the purpose of insulation, approved installation practices, and device labeling
• Apply Alberta-specific environmental considerations to evaluate whether an electrical installation is safer and more reliable

Learning Objectives

• Explain the relationship between kinetic energy, gravitational potential energy, and mechanical energy conservation.
• Use energy transfer and non-conservative losses (like friction) to predict whether a motion is feasible.
• Apply energy conservation ideas to real-world contexts such as hydroelectric dams and skiers on slopes.

Learning Objectives

• Interpret displacement–time and velocity–time graphs using slope and sign to determine velocity and acceleration.
• Use the area under a velocity–time graph to find displacement, including when velocity changes with time.
• Identify non-uniform acceleration from curved graphs and recognize discontinuities and direction changes from graph features.

Learning Objectives

• Interpret displacement–time, velocity–time, and acceleration–time graphs to describe motion qualitatively and quantitatively
• Use slope and area (where appropriate) to connect graphical features to physical meaning
• Select correct axes, labels, and units to compare motion profiles from empirical data

Learning Objectives

• Apply kinematics, net-force reasoning, and energy considerations together to explain complex motion.
• Use free-body diagrams and Newton’s 2nd law to predict acceleration for real-world scenarios.
• Use energy (work and the work-energy theorem) to check or refine predictions such as stopping distance.+ Show more

Learning Objectives

• Explain how net force is determined by adding forces as vectors with direction and magnitude
• Use Newton’s second law to predict how net force changes an object’s acceleration
• Identify situations where forces balance (net force equals zero) and where opposing forces reduce motion

Learning Objectives

• Explain how Newton’s laws relate forces to changes in motion (inertia, force–acceleration, and action–reaction).
• Use Newtonian reasoning to predict how real objects move in common situations such as snowplows, recoil mechanisms, and anchored structures.
• Interpret motion patterns in regional contexts (e.g., erosion control and playground apparatus) using cause-and-effect physics principles.

Learning Objectives

• Explain the relationship between power, energy transfer, and energy losses in real systems
• Calculate efficiency from input energy and useful output energy (or input power and useful output power)
• Analyze how design choices affect operational limits and practical performance compared with theoretical models

Learning Objectives

• Explain how simple machines transfer forces to reduce effort and/or change the direction of a force
• Compare ideal mechanical advantage with practical outcomes by accounting for friction
• Identify real-world examples of lever, wheel and axle, pulley, inclined plane, and screw used in everyday contexts+ Show more

Learning Objectives

• Explain how work depends on force and distance using the relationship between applied force and displacement
• Describe how simple machines (levers, pulleys, and ramps) change the magnitude or direction of an applied force
• Analyze trade-offs between force reduction and increased distance in real-world machine designs

Learning Objectives

• Describe how component I–V characteristics differ for resistors and diodes
• Explain how temperature affects resistance in devices such as thermistors
• Connect power ratings and operating limits to safe, reliable circuit operation+ Show more

Learning Objectives

• Explain how changing magnetic flux induces an emf in a conductor.
• Use Lenz’s law to predict the direction of the induced emf (and current).
• Relate transformer operation to step-up/step-down voltage changes in power systems.

Learning Objectives

• Explain how wind and solar intermittency affects electrical grid reliability and dispatch planning
• Describe grid balancing mechanisms used to coordinate variable renewable generation
• Evaluate how energy storage and infrastructure upgrades support renewable integration+ Show more

Learning Objectives

• Explain how sexual and asexual reproduction affect genetic variation in breeding programs
• Describe how chromosome behavior and Mendelian patterns determine inheritance of traits
• Predict possible outcomes of selection on beneficial and harmful linked traits+ Show more

Learning Objectives

• Explain how environmental chemical reactions can be analyzed using evidence, atomic/particulate explanations, and mass conservation.
• Apply system boundary ideas to track measurable mass flows in real environmental contexts (e.g., acid deposition, tailings chemistry, nutrient cycling).
• Use chemical and environmental vocabulary to describe how substances transform and where they go in an ecosystem.

Learning Objectives

• Assess how device ratings and intended function determine appropriate electrical system choices
• Identify protective measures that reduce electrical hazards in different contexts
• Evaluate energy efficiency and environmental impact when selecting electrical applications

Learning Objectives

• Explain how electrical systems waste energy through resistive losses and other loss mechanisms.
• Compare efficiency metrics and relate them to cost, environmental impact, and design choices.
• Identify strategies (e.g., device selection and control methods) that improve system performance.

Learning Objectives

• Interpret coefficient ratios in balanced chemical equations to relate reactant and product masses
• Use conservation of mass to reason about how much mass appears in products during real chemical processes
• Translate between symbolic chemical representations and real-world mass accounting scenarios

Learning Objectives

• Explain how the choice of reference frame affects observed velocity and displacement.
• Apply vector addition to relate velocities measured in different frames (e.g., boat, truck, and aircraft scenarios).
• Interpret real-world motion situations using consistent reference-frame language.

Learning Objectives

• Explain how natural selection works by linking heritable traits, selective pressure, and reproductive success
• Define fitness and describe how adaptive trade-offs affect survival and reproduction
• Compare natural selection with artificial selection and predict how traits can change over generations

Learning Objectives

• Describe major biotechnology methods used to alter organisms, including selective breeding, hybridization, genetic modification, and gene editing
• Explain how traits can be introduced or changed at both molecular and population levels
• Evaluate why regulation and monitoring are important when deploying biotechnology in agriculture

Learning Objectives

• Distinguish the roles of mitosis and meiosis in growth, tissue repair, and reproduction
• Explain key events in meiosis, including chromosome pairing, recombination, and segregation
• Identify consequences of chromosome segregation errors such as nondisjunction+ Show more

Learning Objectives

• Explain how fertilization leads to zygote formation and early embryonic development
• Compare internal and external fertilization strategies using real-world environmental examples
• Describe how temperature, moisture, and habitat quality can influence embryonic development and reproductive success+ Show more

Learning Objectives

• Explain how genes on DNA can determine protein structure and function
• Describe how transcription and translation work at a high level
• Analyze how gene regulation (including promoter function) can change phenotype+ Show more

Learning Objectives

• Explain how allele frequency changes under different evolutionary forces in a population
• Apply the Hardy-Weinberg equilibrium assumptions to predict genotype frequencies
• Analyze how genetic drift, bottlenecks, founder effects, and gene flow can change genetic diversity+ Show more

Learning Objectives

• Differentiate between sexual and asexual reproduction in terms of genetic outcomes and parent involvement
• Explain how reproductive strategies affect genetic diversity and population change over time
• Apply Alberta examples to identify whether a reproductive mode is primarily sexual or asexual

Learning Objectives

• Explain how sex chromosomes (X and Y) influence inheritance patterns.
• Distinguish X-linked recessive inheritance from autosomal inheritance in terms of risk to males and females.
• Describe dosage compensation and hemizygosity and how these mechanisms affect gene expression.+ Show more

Learning Objectives

• Differentiate series and parallel circuit arrangements by describing how current and voltage behave
• Use circuit rules to predict how brightness and load distribution change in series versus parallel circuits
• Interpret simple circuit scenarios involving household wiring and lighting strings

Learning Objectives

• Explain how element symbols represent elements and how subscripts in chemical formulas show relative numbers of atoms.
• Interpret chemical formulas to determine the kinds of atoms present and the proportions of each atom.
• Use correct scientific notation to communicate material identity and composition.

Learning Objectives

• Explain the conservation of mass principle and how it relates to atoms being conserved in chemical reactions
• Use particle reasoning to account for mass changes (or no net change) in sealed systems
• Interpret mass and gas-evolution measurements using balanced chemical ideas and matter accounting

Learning Objectives

• Differentiate ionic, covalent, and metallic bonding based on how electrons interact
• Predict common physical properties (such as melting point, conductivity, and solubility) from bonding type
• Connect molecular bonding concepts to real-world materials and applications

Learning Objectives

• Explain what a physical change is and how it differs from a chemical change
• Identify examples of physical changes in everyday and engineered processes
• Use particle/identity reasoning to describe how matter can change phase or form without forming new substances

Learning Objectives

• Use conservation of mass and atom rearrangement to predict likely products of chemical reactions
• Identify common reaction types (synthesis, decomposition, neutralization) and their typical outcomes
• Apply balancing and bonding patterns to justify predicted chemical products

Learning Objectives

• Describe the particle model for solids, liquids, and gases using lattice, fluidity, and compressibility ideas.
• Explain how temperature and pressure changes cause phase transitions between states of matter.
• Interpret real-world examples (freezing, evaporation, condensation) using energy and particle motion.

Learning Objectives

• Interpret common circuit diagram symbols to identify components, connections, and control elements.
• Translate a schematic into an understanding of current paths and node relationships.
• Use reference nodes and notation to predict voltage differences across components.

Learning Objectives

• Understand the criteria used for evaluating design solutions quantitatively and qualitatively.
• Apply decision frameworks and matrices to compare performance, costs, and environmental impacts.
• Analyze trade-offs and uncertainties in selecting optimal system designs.+ Show more

Learning Objectives

• Explain the processes of seafloor spreading, subduction, and volcanic arc formation.
• Describe how mantle convection influences surface features and tectonic activity.
• Interpret geologic cross-sections and magnetic anomaly patterns to understand plate movements.+ Show more

Learning Objectives

• Understand how temperature, pressure, concentration, and catalysts influence chemical reactions.
• Apply principles of equilibrium and kinetics to predict reaction outcomes.
• Analyze how reaction conditions affect yield, selectivity, and side reactions.+ Show more

Learning Objectives

• Understand the principle of conservation of linear momentum in isolated systems.
• Differentiate between elastic and inelastic collisions through quantitative analysis.
• Calculate total momentum before and after collisions using vector sums.+ Show more

Learning Objectives

• Understand how impulse and force-time tradeoffs affect collision outcomes.
• Identify engineering strategies like crumple zones, airbags, and padding to reduce peak forces.
• Analyze force-time graphs to evaluate impact mitigation methods.+ Show more

Learning Objectives

• Describe the processes involved in the transformation of rocks within the rock cycle.
• Identify examples of igneous, sedimentary, and metamorphic rocks and their formation pathways.
• Explain the environmental conditions, such as pressure and temperature, that influence rock transformation.+ Show more

Learning Objectives

• Describe the different types of chemical bonds: ionic, covalent, and metallic.
• Explain how electron sharing and transfer influence molecular structure and properties.
• Relate atomic electron configurations to macroscopic properties such as melting point and conductivity.+ Show more

Learning Objectives

• Understand how to calculate the center of mass for composite systems.
• Analyze the conditions for static equilibrium and rotational stability.
• Apply torque and moment concepts to real-world stability problems.+ Show more