Grade 9 Worksheets

Learning Objectives

• Explain the role of sex chromosomes in determining gender.
• Understand how sex-linked inheritance affects trait expression.
• Differentiate between sex determination systems in mammals.+ Show more

Learning Objectives

• Explain how bandwidth, signal-to-noise ratio (SNR), and modulation affect transmission quality in digital and analog systems
• Use sampling criteria and channel capacity ideas to predict limits on data rates
• Compare error-detection/correction techniques and how coding reduces bit error rate+ Show more

Learning Objectives

• Identify what each major punctuation mark signals (end punctuation, commas, apostrophes, and quotation marks).
• Use commas correctly in introductory phrases, nonessential descriptions, and series.
• Choose punctuation that clarifies meaning and avoids confusing defining vs. nonessential information.+ Show more

Learning Objectives

• Explain how work relates to energy transferred by a force acting through a distance.
• Predict whether an object’s kinetic energy increases or decreases based on the net force direction relative to motion.
• Use the idea of net force doing work to interpret speed changes in real situations.

Learning Objectives

• Understand the mechanisms driving divergent, convergent, and transform plate boundaries.
• Identify surface expressions such as mid-ocean ridges, subduction zones, and transform faults.
• Analyze evidence like seafloor age patterns, paleomagnetic stripes, and earthquake distributions related to plate tectonics.+ Show more

Learning Objectives

• Explain how global trade and policies influence what foods people can access.
• Describe how food supply chains connect farms, processing, shipping, and markets.
• Analyze how climate change can affect food availability in different regions.+ Show more

Learning Objectives

• Understand the connection between catabolic and anabolic pathways in metabolism.
• Describe how hormonal signals and nutrient availability influence metabolic processes.
• Explain the systemic coordination of energy flow during high demand or scarcity in organisms.+ Show more

Learning Objectives

• Identify common chemical element symbols.
• Recognize and interpret basic chemical formulas.
• Understand how symbols and formulas communicate chemical composition.

Learning Objectives

• Understand the definition of physical changes and how they differ from chemical changes.
• Identify common examples of physical changes in everyday life and natural environments.
• Describe the processes involved in phase changes such as melting and freezing.+ Show more

Learning Objectives

• Differentiate between climate and weather
• Identify factors that influence climate, such as latitude and atmospheric circulation
• Understand how large bodies of water and local factors affect regional climate+ Show more

Learning Objectives

• Describe the hierarchy of biological organization from molecules to organisms.
• Explain the concept of emergent properties at each level of biological structure.
• Identify how components assemble hierarchically to form complex systems.

Learning Objectives

• Identify the key parts of an oral message: introduction, body, and conclusion
• Use signposting language to show how ideas connect in a speech
• Explain how structure improves audience comprehension+ Show more

Learning Objectives

• Identify whether a text is primarily literary or informational based on its purpose and features.
• Analyze how structure (organization, plot, and paragraphing) shapes meaning in literary and informational texts.
• Determine how authors use evidence such as events, details, definitions, and examples to guide the reader.+ Show more

Learning Objectives

• Identify a text’s theme by noticing recurring details and patterns in meaning.
• Evaluate how specific evidence supports (or does not support) a theme or claim.
• Analyze how tone and emphasis influence what a text values.

Learning Objectives

• Identify viewpoint bias by analyzing which details a narrator or author includes or omits.
• Explain how loaded wording and tone can guide a reader’s judgment.
• Compare perspectives by noting one-sided sourcing and contrasts between stated facts and minimized information.+ Show more

Learning Objectives

• Understand the hierarchical structure and purposes of biological classification systems.
• Identify shared traits and evolutionary relationships used in classifying organisms.
• Differentiate between traditional taxonomy and modern phylogenetic approaches.+ Show more

Learning Objectives

• Understand the concept of work as a dot product of force and displacement and its dependence on the angle between them.
• Differentiate between constant-force and variable-force work calculations.
• Apply area-under-the-curve methods to approximate work done by variable forces in common scenarios.+ Show more

Learning Objectives

• Understand the mathematical definition of work as the dot product of force and displacement.
• Apply the work formula involving force, angle, and displacement to various situations.
• Contrast methods for computing work when force is constant versus variable.+ Show more

Learning Objectives

• Understand the structure and function of cell organelles.
• Identify key components of a cell and their roles.
• Explain how cell structure relates to its function.+ Show more

Learning Objectives

• Define and identify sources of genetic variation including mutation, recombination, gene flow, and chromosomal rearrangements.
• Explain how different sources of variation contribute to genetic diversity and evolution.
• Analyze examples of genetic variation mechanisms in real-world or regional contexts.+ Show more

Learning Objectives

• Identify what an element symbol stands for in a chemical formula.
• Read subscripts as numbers that show relative proportions of atoms in a compound.
• Use correct element-symbol interpretation to explain composition of common substances.

Learning Objectives

• Define power as the rate of energy transfer.
• Explain how efficiency compares useful output energy to input energy.
• Use input power, output power, and losses to interpret real-world performance.

Learning Objectives

• Identify observable evidence of chemical change from acid deposition on limestone
• Explain particulate and atomic ideas for how acids affect carbonate minerals
• Use mass conservation ideas to describe measurable mass changes across a system boundary

Learning Objectives

• Define observable properties and explain why they are useful for identifying materials.
• Distinguish between physical properties and ways we measure or describe them.
• Use examples of colour, hardness, conductivity, density, and solubility to classify substances.

Learning Objectives

• Identify a frame of reference used to describe motion.
• Interpret velocity direction as measured in a chosen frame.
• Explain how changes in frame affect calculated displacement and velocity but not the physical facts of motion.

Learning Objectives

• Describe matter using a particulate model with discrete particles
• Explain how particle motion and spacing relate to diffusion
• Use kinetic energy and collisions to justify differences between solids, liquids, and gases+ Show more

Learning Objectives

• Describe how particle behavior differs in solids, liquids, and gases
• Identify evidence in a text that matches each state of matter to its particle model
• Explain phase changes using energy and particle motion

Learning Objectives

• Identify common standardized circuit symbols and what they represent.
• Use diagram conventions (nodes, wires, and polarity) to predict how current can flow.
• Explain how connection types in a circuit diagram affect the paths between components.

Learning Objectives

• Define work as energy transfer when a force acts through a distance
• Identify key terms: force, distance, direction, mechanical advantage
• Explain how changing distance and force affects work and machine performance+ Show more

Learning Objectives

• Distinguish series and parallel connections in a mixed (combined) circuit
• Predict how voltage and current behave within series vs. parallel branches
• Use circuit reasoning to trace where current can split and where it must remain the same

Learning Objectives

• Explain the relationship between voltage, current, and resistance for a linear resistor.
• Interpret a component description to predict how current changes when voltage changes.
• Identify correct limits and consequences of assuming linear behavior.

Learning Objectives

• Explain how genes (DNA segments) can encode proteins and include regulatory parts
• Describe transcription and translation as steps that connect DNA to proteins
• Identify how gene regulation and changes in expression can affect phenotype+ Show more

Learning Objectives

• Define electric current as the rate of charge flow and distinguish it from charge itself
• Use unit knowledge (amperes) to interpret typical current magnitudes in simple contexts
• Connect changes in current to changes in how fast charge moves through a circuit

Learning Objectives

• Describe how magnetic field lines show direction from a north pole to a south pole
• Explain how like poles and unlike poles affect magnetic attraction and repulsion
• Use basic field-mapping ideas to interpret magnets and compass behavior

Learning Objectives

• Identify cause-and-effect links between propagation choices and genetic diversity.
• Explain how chromosomes and Mendelian patterns can transmit selected traits.
• Describe variation sources and how selection can change trait frequencies in populations over generations.+ Show more

Learning Objectives

• Explain the main stages in moving electricity from generation to consumers.
• Describe how voltage transformation supports long-distance power transmission.
• Use a simple sequence to predict how faults can spread through a network.+ Show more

Learning Objectives

• Explain how natural selection acts on heritable traits over generations.
• Describe the role of selective pressure and fitness in changing populations.
• Identify an adaptive trade-off and give an example of camouflage or resilience.

Learning Objectives

• Explain why electrical safety standards exist and what hazards they reduce
• Identify what grounding, overcurrent protection, and insulation are meant to do
• Interpret basic device label terms (grounding, rating, and approved use) in everyday scenarios+ Show more

Learning Objectives

• Identify kinetic energy and gravitational potential energy in real situations
• Track total mechanical energy using energy accounting with work and non-conservative losses
• Explain how friction changes mechanical energy during motion

Learning Objectives

• Identify the main idea of a biotechnology text and use details to support it.
• Explain how selective breeding and hybridization can change traits in crops or livestock over generations.
• Connect genetic technology choices to potential benefits and limitations.

Learning Objectives

• Identify contact and non-contact forces in everyday situations
• Match forces to their push or pull effects
• Use opposing forces to predict how motion will change

Learning Objectives

• Explain how friction acts as a resistance force that opposes motion.
• Use vocabulary from a science text to interpret cause-and-effect relationships.
• Distinguish factors that increase or decrease friction in everyday situations.

Learning Objectives

• Define speed as distance travelled per unit time
• Identify speed in a description and choose correct distance-per-time units
• Use correct unit reasoning to compare speeds in familiar contexts

Learning Objectives

• Identify the main steps of binary fission and budding in asexual reproduction.
• Explain how asexual reproduction affects genetic similarity among offspring.
• Describe why asexual strategies can spread well in stable environments.

Learning Objectives

• Describe the structure of DNA as a double helix and explain how base pairing stabilizes it
• Identify how the sequence of DNA bases relates to the information carried by genes
• Explain why DNA structure affects how genetic information is passed on

Learning Objectives

• Define allele, genotype, and phenotype using correct science vocabulary
• Distinguish dominant and recessive alleles in single-gene crosses
• Use simple Punnett square logic to predict offspring outcomes

Learning Objectives

• Explain how conservation of atoms applies to chemical reactions
• Describe how balancing an equation fixes unequal atom counts
• Use a balanced equation to make correct predictions about relative amounts of reactants and products

Learning Objectives

• Identify corresponding sides, angles, and vertices in congruent triangles
• Write triangle congruence statements in the correct vertex order
• Apply SSS, SAS, ASA, AAS, and HL theorems+ Show more