Grade 9 Science Worksheets

Learning Objectives

• Analyze human–Earth interactions affecting water, soil, mineral, and energy resources using indicators such as extraction rates and land-use change metrics.
• Interpret resource trends considering natural variability and system thresholds, and evaluate their consequences like subsidence and soil erosion.
• Use comparative datasets and ratio-based measures to assess sustainability implications and connect local resource changes to Earth system responses.

Learning Objectives

• Describe the components of an atom, including protons, neutrons, and electrons.
• Explain electron configurations and energy levels.
• Understand how the periodic table organizes elements based on valence electrons.+ Show more

Learning Objectives

• Describe the hydrologic (water) cycle as water moves among atmosphere, surface, and subsurface reservoirs.
• Explain how evaporation, condensation, precipitation, infiltration, runoff, and groundwater flow affect water availability and timing.
• Analyze how watershed characteristics and human activities can change flow partitioning, fluxes, and residence time.

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

• Understand the basic concepts of solar and lunar eclipses.
• Identify the differences between solar and lunar eclipses.
• Learn how the positioning of the Sun, Moon, and Earth causes eclipses.+ Show more

Learning Objectives

• Explain the role of genes as DNA segments that encode proteins and influence traits.
• Describe the processes of transcription and translation in gene expression.
• Understand the impact of gene regulation, such as promoter function and regulatory changes, on phenotype.+ Show more

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

• Explain how constraints limit design options in engineering problems
• Identify criteria for success and describe how criteria weighting affects a final design choice
• Compare designs by describing trade-offs among cost, time, materials, safety, and reliability

Learning Objectives

• Explain how human actions can change air, water, and land systems and create tradeoffs.
• Evaluate environmental solutions by considering mechanisms of harm, benefits, side effects, and feasibility.
• Use scientific reasoning to predict how environmental changes can propagate through ecosystems, including uncertainty.

Learning Objectives

• Understand the principles of VSEPR theory and how electron pairs influence molecular shape.
• Identify common molecular geometries such as linear, trigonal planar, tetrahedral, and bent.
• Explain how molecular shape affects polarity, intermolecular forces, and reactivity.+ Show more

Learning Objectives

• Explain power as the rate of energy transfer and distinguish average power from instantaneous power.
• Use correct SI units for power and energy transfer, and relate them to real physical situations.
• Calculate and interpret mechanical efficiency by comparing useful output energy (or work) to input energy (or work).+ Show more

Learning Objectives

• Classify forces as contact or non-contact using everyday examples.
• Describe forces by magnitude, direction, and point of application.
• Identify action–reaction pairs acting on different interacting objects.+ Show more

Learning Objectives

• Explain phase changes using energy transfer, including how melting, vaporization, sublimation, and condensation relate to latent heat.
• Use qualitative heating/cooling curves to interpret temperature plateaus and characteristic transition temperatures.
• Describe how particle motion and potential energy change during phase transitions without changing chemical identity.

Learning Objectives

• Explain how electron behavior leads to ionic and covalent bond formation.
• Compare how ionic and covalent bonding affect material properties such as melting point and conductivity.
• Use an atomic model to predict how substances respond to stress (breaking apart).

Learning Objectives

• Explain how plate motions at divergent, convergent, and transform boundaries produce distinct surface features and hazards
• Describe how subduction and continental collision contribute to volcanism and mountain building
• Use earthquake and volcanic arc patterns to support the idea that lithospheric plates interact+ Show more

Learning Objectives

• Understand the concept of ionic bonding and electron transfer
• Identify properties of ionic compounds
• Differentiate between ionic and covalent bonds+ Show more

Learning Objectives

• Differentiate homogeneous and heterogeneous mixtures using particle-level descriptions
• Identify physical properties used by common mixture separation methods
• Match filtration, distillation, magnetic separation, and decanting to properties+ Show more

Learning Objectives

• Explain how environmental exposures can contribute to chronic disease
• Describe how dose–response relationships affect health risk
• Identify vulnerability factors that change health outcomes+ Show more

Learning Objectives

• Understand the different stages of star formation and evolution.
• Identify key features of the Hertzsprung-Russell diagram.
• Describe the processes leading to different stellar end states such as white dwarfs, neutron stars, and black holes.+ Show more

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

• Explain how temperature, humidity (dew point), wind, and air pressure relate to observable weather patterns.
• Use weather data trends and short-term variability to distinguish typical weather from changing climate signals.
• Interpret relationships in datasets using reasoning about air mass movement and energy exchange near Earth’s surface.

Learning Objectives

• Identify Earth’s main layers and their changing physical conditions
• Compare lithosphere and asthenosphere using mechanical behavior
• Explain how seismic waves reveal Earth’s internal structure+ Show more

Learning Objectives

• Understand the principles of mechanical energy conservation in ideal systems.
• Explain how kinetic and potential energies interconvert in systems with negligible non-conservative forces.
• Identify the effects of non-conservative forces like friction on energy dissipation.+ Show more

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

• Understand the role of systems and decision models in environmental science.
• Explore how scenario analysis, cost-benefit, and lifecycle assessments inform mitigation strategies.
• Analyze trade-offs among greenhouse gas reduction, health, and economic development.+ Show more

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

• Understand the mechanisms that cause allele frequencies to change in populations, including selection, drift, migration, and mutation.
• Explain the Hardy-Weinberg equilibrium as a null model for population genetics.
• Describe how fitness landscapes and selection coefficients influence evolution.+ 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

• Explain how climate variability differs from long-term climate trends
• Describe how ocean-atmosphere interactions (El Niño and La Niña) redistribute heat and moisture
• Use evidence from multiple timescales and regions to distinguish natural variability from sustained climate change+ 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 the mechanisms of seafloor spreading, subduction zones, and volcanic arc systems.
• Model Earth's internal processes, including mantle convection and crustal deformation.
• Analyze geologic cross-sections and seafloor magnetic anomaly patterns as evidence for plate tectonics.+ 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

• Understand the structure and components of DNA
• Explain how DNA transcribes into RNA
• Describe how proteins are assembled from amino acids+ 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