Grade 9 Science Worksheets

Learning Objectives

• Explain how Earth’s magnetic field is generated in the core and how field lines behave near Earth’s surface
• Describe declination and dip and predict how they affect compass use, surveying, and magnetic instruments
• Connect Earth’s magnetism to ionospheric phenomena such as auroras and to real-world navigation and monitoring needs

Learning Objectives

• Simplify mixed (series-parallel) circuit networks by identifying equivalent resistances
• Apply Ohm’s law and series/parallel rules to determine current and voltage trends in combined circuits
• Trace current paths through branches to analyze how loads behave in real systems

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

• 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

• Identify major sources of genetic variation, including mutation, recombination, gene flow, and chromosomal rearrangements.
• Explain how these processes change allele combinations and allele frequencies within and between populations.
• Evaluate how human actions (e.g., introductions, managed breeding, hybridization) can affect genetic diversity and evolutionary outcomes.

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 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 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

• 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 forces can change motion using push or pull effects
• Differentiate contact forces (like friction and normal force) from non-contact forces (like gravity)
• Describe how force direction and magnitude combine using vector reasoning+ Show more

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

• 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

• 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

• 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 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

• Use constant-acceleration (kinematics) equations to relate displacement, velocity, acceleration, and time.
• Apply a consistent sign convention and unit analysis when solving physics motion problems.
• Solve numerical problems by substituting known values into standard kinematics equations and checking whether results are physically reasonable.+ Show more

Learning Objectives

• Explain mechanical advantage as a ratio of load force to input force and connect it to how machines move loads.
• Calculate and interpret mechanical advantage for lever and pulley systems, noting the force–distance trade-off.
• Use real-world examples (e.g., bale lifters and scaffold hoists) to predict how design choices affect safety and required input effort.

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 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

• 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

• Distinguish between speed, velocity, and acceleration and describe what each quantity measures
• Apply sign conventions to interpret motion direction in one-dimensional kinematics problems
• Use unit conversions and algebraic relationships to compare motion quantities

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

• 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

• 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

• 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

• 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 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

• 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

• 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 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 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

• 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

• 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 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

• Explain how friction opposes motion and how normal force and surface texture affect frictional force.
• Describe how aerodynamic drag depends on air density, object shape, and relative speed.
• Use quantitative ideas (coefficients and drag concepts) to estimate resistance forces in real-world contexts.

Learning Objectives

• Explain how DNA structure (double helix and base pairing) supports accurate heredity.
• Describe how chromosomes organize genes using loci and how karyotypes display chromosome features.
• Compare nuclear DNA and organelle genomes (e.g., mitochondrial DNA) in terms of packaging and inheritance.

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 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 how the arrangement of particles affects the properties of different types of solids.
• Identify the differences between ionic lattices, covalent networks, and molecular solids based on their structure and properties.
• Analyze how electrical forces influence melting point, conductivity, hardness, and solubility in various materials.+ Show more

Learning Objectives

• Understand how potential and kinetic energy change during chemical reactions.
• Differentiate between endothermic and exothermic processes.
• Interpret energy diagrams and relate them to molecular interactions.+ Show more

Learning Objectives

• Explain how molecular, cellular, and organ-level interactions contribute to organismal health and disease.
• Interpret data from biochemical assays, histology, and organ function metrics to understand physiological properties.
• Link genetic variations to cellular responses and organ system performance in clinical and natural contexts.+ Show more

Learning Objectives

• Explain the biochemical pathways involved in cellular respiration and energy production.
• Describe the roles of mitochondria and chloroplasts in metabolism.
• Analyze the relationship between energy flow, ATP synthesis, and organismal energy balance.+ Show more

Learning Objectives

• Explain how nucleic acid sequences determine amino acid chains and protein structures.
• Connect molecular coding and folding to organelle architecture such as ribosomes, endoplasmic reticulum, and mitochondria.
• Describe the relationship between macromolecular structure and cellular functions like transport and catalysis.+ Show more

Learning Objectives

• Describe the levels of biological organization from cells to organism.
• Explain how tissues, organs, and organ systems interact to maintain organism functions.
• Identify examples of system interactions such as circulatory-respiratory coupling and nervous-endocrine integration.+ Show more

Learning Objectives

• Describe the mechanisms of molecular signaling pathways and how they regulate gene expression and protein activity.
• Explain how intercellular communication affects cellular functions and systemic physiological outcomes.
• Analyze the effects of mutations and pharmacological inhibition on molecular pathways and organism health.+ 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

• Explain how solar flux, albedo, greenhouse gases, and ocean heat transport influence Earth's climate.
• Interpret observational data and paleoclimate proxies to understand climate variability.
• Describe the processes involved in surface-atmosphere interactions affecting regional weather patterns.+ Show more