Grade 9 Science Worksheets

Learning Objectives

• Identify observable evidence that indicates a chemical change
• Distinguish chemical changes from physical changes
• Explain how reactants become products through bond rearrangement+ Show more

Learning Objectives

• Understand how to represent forces as vectors including magnitude and direction
• Learn to resolve forces into components using graphical and analytical methods
• Calculate the resultant of combined forces and analyze their effects+ Show more

Learning Objectives

• Describe the processes involved in the rock cycle, including melting, crystallization, weathering, erosion, deposition, and metamorphism.
• Explain how plate tectonics influence the formation and transformation of rocks.
• Identify observable evidence in the field, such as foliated textures and layering, that supports the rock cycle.+ Show more

Learning Objectives

• Interpret chemical formulas to identify fixed elemental ratios
• Explain the law of definite composition using chemical formulas
• Compare ionic and covalent bonding using electron behavior+ Show more

Learning Objectives

• Explain how proton number determines an element's identity
• Identify elements using chemical symbols and atomic models
• Distinguish metallic and nonmetallic elements using physical traits+ Show more

Learning Objectives

• Define physical properties as observable or measurable characteristics that do not change chemical identity.
• Identify examples of physical properties such as density, melting point, boiling point, colour, hardness, and conductivity.
• Explain how physical properties are used to classify and separate materials.+ Show more

Learning Objectives

• Identify physical barriers that protect the body from pathogens
• Explain how macrophages and inflammation support innate immunity
• Describe how antigen recognition activates adaptive immune responses+ Show more

Learning Objectives

• Explain the law of conservation of mass and its significance in chemistry.
• Identify how balanced chemical equations reflect mass conservation.
• Relate measurable mass changes to molecular rearrangements during reactions.+ Show more

Learning Objectives

• Explain how balancing a chemical equation enforces conservation of atoms.
• Use coefficients to determine reactant and product atom counts on both sides of an equation.
• Connect balanced equations to measurable mass relationships in real-world reactions.

Learning Objectives

• Describe physical changes without altering chemical identity
• Classify common phase changes as reversible or irreversible
• Explain energy transfer during melting, freezing, and condensation+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Identify different types of epithelial tissue and understand their functions.
• Describe the structure and support roles of connective tissues.
• Explain how muscle tissues generate force and movement.+ Show more

Learning Objectives

• Distinguish static friction from kinetic friction during motion
• Apply the friction approximation F = μN to resistive forces
• Describe how speed, area, and density affect fluid drag+ Show more

Learning Objectives

• Explain why chemical equations must be balanced to reflect conservation of atoms and mass
• Interpret reactants, products, and coefficients in a chemical equation
• Balance simple equations using particle counts represented by coefficients+ Show more

Learning Objectives

• Use VSEPR electron-pair repulsion to predict the 3D shape of common molecules.
• Connect molecular geometry to polarity and intermolecular forces.
• Relate molecular shape to macroscopic properties such as boiling point and solubility.

Learning Objectives

• Use residual plots and graphical overlays to evaluate how well a model matches empirical data
• Interpret patterns in residuals to diagnose systematic errors, heteroscedasticity, and missing variables
• Select appropriate goodness-of-fit ideas and justify whether to accept, modify, or reject a model

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

• Explain how Earth’s rotation produces daily apparent sky motion
• Explain how Earth’s revolution produces yearly sky changes
• Interpret altitude and azimuth for rising celestial objects+ Show more

Learning Objectives

• Identify the major carbon reservoirs in the Earth's system
• Understand the fluxes that transfer carbon among different reservoirs
• Describe the importance of each reservoir in the global carbon cycle+ Show more

Learning Objectives

• Explain how disturbances can change ecosystem interactions and environmental conditions.
• Describe how feedback processes and recovery rates influence whether an ecosystem returns to its original state.
• Use evidence from population trends and community structure to argue for gradual versus rapid ecosystem shifts.+ Show more

Learning Objectives

• Identify external forces acting on an isolated object
• Draw force arrows using consistent direction and coordinate conventions
• Calculate net force from multiple forces acting on an object+ Show more

Learning Objectives

• Explain how the geometry between the Sun, Earth, and Moon determines lunar phase appearance from Earth.
• Describe how the synodic month relates to the predictable cycle of lunar phases.
• Use phase terminology (new, waxing, first quarter, waxing gibbous, full, waning) to interpret what fraction of the Moon’s disk is illuminated.+ Show more

Learning Objectives

• Understand what constitutes a chemical change and how it produces new substances.
• Identify various indicators of chemical change such as temperature change, gas production, precipitate formation, and colour change.
• Distinguish observable chemical evidence from physical rearrangement of matter.+ Show more

Learning Objectives

• Understand the structure and components of an atom, including protons, neutrons, and electrons.
• Identify how the number of protons determines the element identity.
• Explain the significance of electron arrangement in chemical behavior and bonding.+ Show more

Learning Objectives

• Interpret displacement–time, velocity–time, and acceleration–time graphs by using slope and area.
• Explain how changes in slope on a motion graph relate to changing acceleration.
• Choose correct axis labels and scales to compare different motion profiles accurately.

Learning Objectives

• Explain how particle motion, spacing, and forces account for the macroscopic properties of solids, liquids, and gases.
• Describe how temperature relates to average kinetic energy and how that affects diffusion and gas pressure.
• Use particle interactions to predict how matter changes state and responds to heating or cooling.

Learning Objectives

• Explain how the nephron supports filtration, reabsorption, and secretion to regulate water and electrolytes.
• Describe how ADH and the renin–angiotensin–aldosterone system respond to blood volume and osmolarity cues.
• Connect renal transport processes to changes in blood pressure and internal fluid balance.

Learning Objectives

• Understand the different types of interactions among species in ecosystems.
• Identify how environmental factors influence population dynamics.
• Explain how changes in one species can cascade through an ecosystem.+ Show more

Learning Objectives

• Explain how the water cycle moves water through interconnected reservoirs using evaporation, condensation, precipitation, and runoff.
• Describe how carbon shifts among the atmosphere, living things, oceans, and rocks through photosynthesis, respiration, and chemical exchange.
• Connect solar radiation and Earth’s radiation balance to weather and long-term temperature change.

Learning Objectives

• Understand how series and parallel circuit elements combine to form complex networks.
• Learn methods for simplifying mixed circuits by identifying equivalent resistances.
• Trace current and voltage distribution in combined circuits to analyze load sharing.+ Show more

Learning Objectives

• Explain the purpose of the Calvin cycle in carbon fixation during photosynthesis
• Describe how ATP and NADPH are used to drive reduction and regeneration steps
• Identify key inputs, outputs, and enzyme involvement in the light-independent reactions

Learning Objectives

• Understand the properties of waves—frequency, wavelength, and amplitude—and how they relate to wave energy.
• Explain how wave properties influence observable wave behavior.
• Identify the links between wave properties and the energy transferred by waves.

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

• Understand the differences between mean, median, and mode and their appropriate use cases.
• Explain how skewness, outliers, and multimodal distributions influence the choice of a measure of central tendency.
• Connect the selection of a central tendency to assumptions about data distribution and underlying processes.+ Show more

Learning Objectives

• Understand the differences between ionic lattices, covalent networks, and molecular solids.
• Analyze how particle arrangement affects properties like melting point and electrical conductivity.
• Interpret observations of material properties to infer lattice organization and interparticle forces.+ Show more

Learning Objectives

• Evaluate how urbanization, deforestation, agriculture, and infrastructure change watershed processes such as runoff, sediment load, nutrient fluxes, and groundwater recharge.
• Explain how watershed alterations affect channel morphology, flood frequency, and aquatic ecosystem health.
• Use measurement indicators (turbidity, discharge) to describe changes in watershed function.+ Show more

Learning Objectives

• Interpret speed-time and distance-time data to infer acceleration and its direction.
• Use changes in speed over equal time intervals to determine whether acceleration is roughly constant or changing.
• Explain how the shape or slope of data curves relates to acceleration.

Learning Objectives

• Understand the concept of limiting reactants and how they determine maximum product formation.
• Calculate theoretical yield using molar ratios and molar masses.
• Differentiate between actual yield and theoretical yield and compute percent yield.+ Show more

Learning Objectives

• Explain how genetic drift changes allele frequencies through chance events, especially in small populations
• Identify how bottlenecks and founder effects can reduce genetic diversity and alter evolutionary outcomes
• Compare the roles of genetic drift, natural selection, and gene flow in shaping allele frequencies

Learning Objectives

• Explain why chemical equations must be balanced to conserve atoms and mass
• Interpret balanced equations as particle-level ratios represented by coefficients
• Use reactant and product formulas to identify which substances are consumed and produced

Learning Objectives

• Explain how phylogenetic trees represent hypothesized evolutionary relationships using branching patterns and common ancestors.
• Differentiate monophyletic, paraphyletic, and polyphyletic groups and predict what each implies about sampling.
• Interpret rooted vs. unrooted trees and describe how characters (including synapomorphies) help determine tree topology.

Learning Objectives

• Explain how balanced chemical equations and mole ratios connect reactant amounts to product amounts.
• Use molar mass to convert between mass (grams) and amount of substance (moles).
• Apply conservation of mass reasoning to interpret why atoms are conserved in chemical reactions.

Learning Objectives

• Explain the relative positions needed for solar and lunar eclipses.
• Describe how orbital inclination limits eclipse frequency and helps predict eclipse paths.
• Use eclipse geometry to compare shadow direction and the visibility of totality.

Learning Objectives

• Identify the functions of key cell organelles involved in genetic information flow and protein trafficking.
• Understand how different organelles coordinate to maintain cellular homeostasis.
• Explain the roles of mitochondria, lysosomes, and peroxisomes in energy production and recycling processes.+ Show more

Learning Objectives

• Explain how explanatory models connect observable evidence to causal mechanisms within defined limits.
• Identify ways scientists refine models by adjusting assumptions, updating parameters, and revising relationships.
• Evaluate how new evidence changes a model and improves agreement with observations.+ Show more

Learning Objectives

• Explain major sources of genetic variation, including mutation, recombination during meiosis, gene flow, and chromosomal rearrangements.
• Describe how different mechanisms can increase or decrease genetic diversity in populations.
• Use real-world examples to predict how genetic variation affects evolutionary change and responses to environmental pressures.

Learning Objectives

• Identify and contrast static and kinetic friction, including how each relates to surface properties and normal force
• Explain how fluid drag depends on velocity, cross-sectional area, and medium density, including low-speed (linear) vs high-speed (quadratic) regimes
• Use coefficients of friction and resistive-force ideas to describe net force and energy dissipation in real situations

Learning Objectives

• Explain how Earth’s magnetic field originates and why it behaves like a giant dipole
• Describe how magnetic declination and dip affect navigation, mapping, and compass readings in real regions
• Interpret how auroras and ionospheric phenomena relate to charged particles and Earth’s magnetic environment+ Show more