Grade 9 Science Worksheets

Learning Objectives

• Identify mitochondria within a cell diagram
• Explain the function of mitochondria in energy production
• Understand how organelles coordinate to support cell activity+ Show more

Learning Objectives

• Describe the main layers of Earth and their properties.
• Understand how seismic waves and gravity inform about Earth's interior.
• Compare the mechanical behavior of Earth's lithosphere and asthenosphere.+ Show more

Learning Objectives

• Understand the mechanisms of energy losses in electrical systems.
• Identify strategies to improve energy efficiency and reduce operational costs.
• Evaluate the impact of device selection and system design on overall efficiency.+ Show more

Learning Objectives

• Understand the roles of producers and consumers in the ecosystem.
• Explain how photosynthesis and cellular respiration transfer energy and cycle carbon and oxygen.
• Identify examples of autotrophs and heterotrophs and their contributions to biomass and energy flow.+ Show more

Learning Objectives

• Understand the characteristics of solids, liquids, and gases.
• Identify the behavior and properties of each state.
• Describe the phase transitions between different states.+ Show more

Learning Objectives

• Understand how resource extraction impacts ecosystems through habitat change and pollution.
• Evaluate the effects of mineral mining, fossil fuel extraction, and water withdrawal on landforms and cycles.
• Assess criteria for sustainability including resource renewability, environmental effects, and reclamation.+ Show more

Learning Objectives

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

Learning Objectives

• Understand how scientists communicate uncertainty in data and results.
• Identify different methods used to express uncertainty.
• Evaluate the importance of transparency and clarity when communicating scientific findings.+ Show more

Learning Objectives

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

Learning Objectives

• Characterize different types of models such as mathematical formulae, graphs, schematic diagrams, and computational approximations.
• Explain the roles of various models in capturing system behavior and predicting outcomes.
• Evaluate criteria for selecting an appropriate model based on fidelity, parsimony, and scope.+ Show more

Learning Objectives

• Understand the concept of variability metrics and their application in data analysis.
• Identify various measures of variability such as range, variance, and standard deviation.
• Analyze data sets to calculate variability metrics and interpret their significance.+ Show more

Learning Objectives

• Understand the principles of metric measurement and instrument resolution.
• Recognize the importance of calibration in obtaining reliable data.
• Connect raw measurements to data representations and assess measurement uncertainty.+ Show more

Learning Objectives

• Understand how to quantify and interpret random and systematic uncertainties in measurements.
• Learn to apply statistical descriptors such as standard deviation, standard error, and confidence intervals.
• Explore procedures for propagating uncertainty through calculations and combined data.+ Show more

Learning Objectives

• Understand the structure of evidence-based reasoning linking observations, analyses, and claims.
• Identify criteria for sufficiency, consistency, and alternative explanations in scientific reasoning.
• Use multiple representations—graphs, summaries, diagrams—to support inferences.+ Show more

Learning Objectives

• Understand the key criteria used to establish control and comparability in causal inference.
• Describe how variable isolation, replication, and baseline characterization contribute to causal analysis.
• Evaluate how control considerations influence data collection and model credibility.+ Show more

Learning Objectives

• Understand methods for assessing the fit between models and empirical data.
• Identify diagnostic patterns indicating systematic divergence, heteroscedasticity, or missing variables.
• Explain the significance of residual analysis and goodness-of-fit measures in model validation.+ Show more

Learning Objectives

• Understand the fundamental principles of unit analysis in scientific measurements.
• Apply dimensional analysis to solve multi-step transformation problems.
• Evaluate the accuracy and precision of measurement results using unit conversions.+ Show more

Learning Objectives

• Identify various types of graphical representations used in data analysis.
• Construct accurate and effective graphs such as scatterplots, histograms, and line graphs.
• Interpret visual patterns, outliers, and trends in data visualizations.+ Show more

Learning Objectives

• Understand the different types of chemical bonds: ionic, covalent, and metallic.
• Recognize how bonding influences molecular structure and properties.
• Interpret Lewis structures and models of electron sharing and transfer.+ Show more

Learning Objectives

• Understand the definitions of speed, velocity, and acceleration and how they differ.
• Apply scalar and vector measures to describe object motion.
• Interpret real-world examples of motion using kinematic measures.+ Show more

Learning Objectives

• Understand the concept of work in relation to force, displacement, and energy transfer.
• Distinguish between positive and negative work and their effects on energy.
• Apply the work-energy theorem to simple physics problems.+ Show more

Learning Objectives

• Understand how temperature, pressure, concentration, and catalysts influence reaction rates and equilibrium.
• Analyze the role of equilibrium constants and reaction-rate expressions in predicting product yields.
• Apply principles of kinetics and equilibrium to optimize chemical processes like Haber synthesis and esterification.+ Show more

Learning Objectives

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

Learning Objectives

• Understand how DNA, RNA, and protein sequences are compared to infer evolutionary relationships.
• Explain the concept of homologous genes and sequence divergence as molecular clocks.
• Recognize the significance of conserved genetic patterns in understanding lineage relationships.+ Show more

Learning Objectives

• Understand the key criteria used to establish control and comparability in causal analysis.
• Identify the importance of variable isolation, replication, and baseline characterization.
• Recognize how control considerations influence data collection and the interpretation of causal claims.+ Show more

Learning Objectives

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

Learning Objectives

• Understand how DNA, RNA, and protein sequences are used to infer evolutionary relationships.
• Explain the concept of homologous genes and sequence divergence as molecular clocks.
• Identify patterns of shared genetic changes, gene duplications, and conserved elements that inform lineage relationships.+ Show more

Learning Objectives

• Compare prokaryotic and eukaryotic cell structure, including key organelles and chromosomes
• Explain how cell architecture affects cell size, complexity, and possible metabolic roles
• Apply knowledge of cell type differences to classify features and evaluate statements

Learning Objectives

• Describe and compare mean, median, and mode as measures of central tendency.
• Explain how skew, outliers, and multimodality affect which central tendency is most informative.
• Choose an appropriate measure of center based on assumptions about the data-generating process.+ Show more

Learning Objectives

• Explain the origin of magnetic fields from permanent magnets and moving electric charges.
• Describe the concept of magnetic field lines and their directional properties.
• Connect the practical applications of magnetism such as compass navigation and industrial sensing.+ Show more

Learning Objectives

• Define electric current, voltage, and resistance.
• Explain the role of these quantities in electrical systems.
• Identify units and symbols used to measure electrical quantities.+ Show more

Learning Objectives

• Understand the concepts of negative and positive feedback in physiological processes.
• Identify examples of feedback systems such as thermoregulation, blood glucose control, and osmoregulation.
• Learn how sensors and effectors work together to maintain internal stability.+ Show more

Learning Objectives

• Explain the movement of elements such as carbon, nitrogen, and phosphorus among Earth's reservoirs.
• Identify key processes like photosynthesis, decomposition, nitrogen fixation, and weathering in biogeochemical cycles.
• Analyze how fluxes and reservoir sizes influence ecosystem responses to environmental disturbances.+ Show more

Learning Objectives

• Use VSEPR ideas to predict the 3D molecular shape from electron-pair arrangement and bond order.
• Relate molecular geometry to molecular polarity and expected intermolecular forces.
• Explain how molecular shape helps predict properties such as boiling point, solubility, and reactivity.

Learning Objectives

• Explain how intermolecular forces influence physical properties such as boiling point and viscosity
• Differentiate between London dispersion forces, dipole–dipole interactions, and hydrogen bonding
• Relate molecular polarity and molecular size to the strength of intermolecular attractions+ Show more

Learning Objectives

• Classify common chemical reactions into synthesis, decomposition, single displacement, double displacement, and combustion.
• Predict typical products by recognizing patterns in reactants and understanding bond/ion reorganization.
• Explain how oxidation and redox ideas relate to combustion reactions.

Learning Objectives

• Define and differentiate between physical changes and chemical transformations.
• Identify examples of reversible physical changes in everyday scenarios.
• Analyze the effects of phase shifts like melting and freezing in natural and engineered processes.+ Show more

Learning Objectives

• Differentiate between heterogeneous mixtures and homogeneous solutions based on their properties.
• Identify key components of mixtures and solutions, such as solute and solvent.
• Understand how concentration affects the appearance and behaviour of mixtures.+ Show more

Learning Objectives

• Understand how to interpret and apply coefficient ratios from balanced chemical equations.
• Calculate mass relationships among reactants and products in chemical reactions.
• Relate symbolic chemical equations to real-world mass measurements and conservation laws.+ Show more

Learning Objectives

• Understand the principle of conservation of mass in chemical reactions.
• Explain how mass remains constant in closed systems during chemical processes.
• Apply the conservation of mass concept to real-world regional contexts such as emissions and resource processing.+ Show more

Learning Objectives

• Understand how to apply patterns of chemical behaviour to predict reaction products.
• Recognize common reaction types such as synthesis, decomposition, and neutralization.
• Identify the significance of conservation principles in predicting outcomes.+ Show more

Learning Objectives

• Understand the concept of element symbols and their formation.
• Identify common chemical formulas and interpret their meaning.
• Connect symbolic representations to real-world chemical substances.+ Show more

Learning Objectives

• Understand the observable signs indicating chemical changes in substances.
• Identify real-world examples of chemical change evidence, such as rusting and combustion.
• Differentiate between physical and chemical changes based on observable evidence.+ Show more

Learning Objectives

• Understand the principle of conservation of atoms and mass in chemical equations.
• Learn how to balance chemical equations to reflect accurate reactant and product ratios.
• Link formula notation to measurable mass relationships in chemical reactions.+ Show more

Learning Objectives

• Describe the basic components of an atom: protons, neutrons, and electrons.
• Explain how atomic number and mass number relate to isotopes and element identity.
• Understand the Bohr model of electron shells and nuclear composition.+ Show more

Learning Objectives

• Understand the different types of chemical bonds and their properties.
• Identify examples of ionic, covalent, and metallic bonding in real-world materials.
• Distinguish between the characteristics and behaviors of different bonding types.+ Show more

Learning Objectives

• Understand the principles of mass conservation in environmental systems.
• Identify chemical processes involved in regional environmental issues such as acid rain and nutrient cycling.
• Interpret observable evidence of environmental change using particulate and atomic explanations.+ Show more

Learning Objectives

• Describe common observable properties used to classify substances.
• Identify examples of observable properties in real-world contexts.
• Differentiate materials based on their observable traits using measurable criteria.+ Show more