Grade 9 Science Worksheets

Learning Objectives

• Differentiate between heterogeneous mixtures and homogeneous solutions.
• Explain the roles of solute and solvent in a solution.
• Describe methods of separating mixture components based on physical properties.+ Show more

Learning Objectives

• Understand patterns of chemical reactions to predict likely products.
• Apply conservation principles and reactant identities in product prediction.
• Analyze industrial examples such as oxidation of hydrocarbons and neutralization reactions.+ Show more

Learning Objectives

• Identify observable signs that indicate a chemical change has occurred.
• Distinguish between physical and chemical change markers in environmental and industrial contexts.
• Understand examples of chemical change such as rusting, combustion, and scale formation.

Learning Objectives

• Understand how to interpret and use coefficient ratios in balanced chemical equations.
• Learn to relate mass measurements of reactants and products through proportional relationships.
• Apply relative mass concepts to practical scenarios involving chemical reactions.+ Show more

Learning Objectives

• Explain how magnetic fields are generated by permanent magnets and moving electric charges.
• Describe the concept of magnetic field lines and their directional properties.
• Connect regional phenomena like compass navigation and magnetic sensing in industry to magnetic fields.+ Show more

Learning Objectives

• Describe how hormones are synthesized, transported, and act on cells through receptor-mediated actions.
• Explain the roles of negative and positive feedback loops in hormonal regulation.
• Analyze mechanisms of glucose homeostasis involving insulin and glucagon.+ Show more

Learning Objectives

• Understand how orbital parameters like eccentricity, tilt, and precession affect climate patterns.
• Explain tidal forces from the Moon and Sun in terms of gravity and geometry.
• Connect orbital dynamics to observable phenomena such as day length, tides, and climate changes over millennia.

Learning Objectives

• Understand how nerve impulses provide quick responses to stimuli
• Identify the role of the nervous system in maintaining homeostasis
• Explain the interaction between neural responses and hormonal regulation

Learning Objectives

• Understand the concept of inertia and its relation to mass.
• Identify real-world examples that demonstrate inertia.
• Explain how force overcomes inertia to change an object's motion.+ Show more

Learning Objectives

• Explain how inclined planes decompose gravitational force into components parallel and perpendicular to the surface.
• Describe the concept of mechanical advantage and how it reduces applied force at the expense of distance.
• Analyze the effects of slope angle and friction on the motion, acceleration, and energy transfer of objects on inclined planes.+ Show more

Learning Objectives

• Understand the concepts of power and how it measures the rate of energy transfer in systems.
• Explain the meaning of efficiency and how it compares useful output energy to input energy.
• Recognize factors that cause energy loss in real systems and how they reduce efficiency.+ Show more

Learning Objectives

• Understand the relationship between net force, mass, and acceleration.
• Analyze how changes in force or mass affect acceleration.
• Apply vector concepts to force and acceleration in different directions.+ Show more

Learning Objectives

• Describe the concept of energy profiles and their purpose in analyzing chemical reactions.
• Distinguish between exothermic and endothermic reactions based on enthalpy changes.
• Identify the significance of activation energy and transition states in reaction pathways.+ Show more

Learning Objectives

• Explain how mass influences acceleration under a given net force.
• Distinguish between inertial mass and gravitational effects in response to forces.
• Apply the force–acceleration relationship in practical problems involving mass.+ Show more

Learning Objectives

• Understand how multiple bodies and forces interact within complex mechanical systems.
• Apply Newton’s laws, net force analysis, and energy accounting to predict system motion.
• Analyze internal and external forces, energy transfer, and energy loss in systems during events like collisions.+ Show more

Learning Objectives

• Explain the types of intermolecular forces and how they affect physical properties of molecules.
• Compare London dispersion, dipole–dipole, and hydrogen bonding in terms of strength and molecular influence.
• Relate molecular structure and polarity to the strength of intermolecular forces and properties like boiling point and viscosity.+ Show more

Learning Objectives

• Explain how friction opposes motion between surfaces and converts kinetic energy to heat.
• Differentiate between static and kinetic friction and understand their roles.
• Describe factors affecting the magnitude of frictional forces.+ Show more

Learning Objectives

• Identify different types of chemical bonds: ionic, covalent, and metallic.
• Explain how electron arrangements influence bond formation and material properties.
• Distinguish between ionic, covalent, and metallic bonds based on their characteristics.+ Show more

Learning Objectives

• Understand the structure and function of different types of crystal lattices.
• Identify the characteristics and properties associated with ionic, metallic, and covalent network lattices.
• Explain how atomic arrangements influence the macroscopic properties of solids.+ Show more

Learning Objectives

• Understand the principle of conservation of mass in chemical reactions.
• Identify factors affecting measured mass during experiments.
• Explain the importance of system boundaries in mass measurements.+ Show more

Learning Objectives

• Explain the basic principles of oxidation and reduction in redox reactions.
• Identify oxidation states of elements in chemical equations.
• Track electron transfer to determine oxidizing and reducing agents.+ Show more

Learning Objectives

• Understand the role of centripetal force in circular motion.
• Identify the effects of inward acceleration on moving objects.
• Connect force components, mass, and acceleration in analyzing circular motion.+ Show more

Learning Objectives

• Describe the components involved in chemical reactions and their transformations.
• Interpret chemical formulas and symbolic equations to understand reactions.
• Explain how bonds break and form, releasing or absorbing energy.+ Show more

Learning Objectives

• Understand the purpose and importance of balancing chemical equations.
• Learn how to correctly balance chemical equations using coefficients.
• Identify the roles of coefficients and state symbols in chemical equations.+ Show more

Learning Objectives

• Understand how mole relationships connect reactants and products in chemical equations.
• Calculate masses and amounts of substances using molar mass and balanced equations.
• Interpret mole ratios and convert between grams and moles in chemical reactions.+ Show more

Learning Objectives

• Understand the concept of limiting reactants and how they determine product formation.
• Calculate theoretical, actual, and percent yields in chemical reactions.
• Apply conservation of mass principles to reaction calculations.+ Show more

Learning Objectives

• Describe how impulse relates force, contact duration, and change in an object's momentum during collisions.
• Differentiate between elastic and inelastic collisions based on energy transformations.
• Analyze force-time profiles involved in collisions to predict resulting velocities and energy changes.+ Show more

Learning Objectives

• Understand the purpose and components of free body diagrams.
• Identify and sketch external forces acting on an object in various scenarios.
• Calculate net force vectors from individual force components.+ Show more

Learning Objectives

• Understand the principle of conservation of mass during chemical reactions.
• Interpret balanced chemical equations in terms of atoms and mass.
• Apply the law of conservation of mass to solve quantitative problems in chemistry.+ Show more

Learning Objectives

• Understand the principles of allele frequency and genetic variation in populations.
• Explain the assumptions of Hardy-Weinberg equilibrium and factors disrupting it.
• Describe the effects of genetic drift, bottlenecks, and founder effects on genetic diversity.+ Show more

Learning Objectives

• Explain how greenhouse gases, albedo changes, aerosols, and land-use feedbacks can alter Earth’s energy balance.
• Use basic radiative transfer and energy-budget ideas to describe how atmospheric composition affects surface temperature.
• Connect human emissions to carbon-cycle changes and to likely climate responses under different emission pathways.+ Show more

Learning Objectives

• Understand the concept of mechanical advantage and how it is expressed as a ratio.
• Calculate mechanical advantage for different machine types such as levers, pulleys, and wheel systems.
• Analyze trade-offs between force reduction and displacement increase in simple machines.+ Show more

Learning Objectives

• Understand the role of computational simulations and models in forecasting.
• Identify how sensitivity analysis influences prediction accuracy.
• Describe how ensembles and visualizations convey uncertainty in simulation outputs.+ Show more

Learning Objectives

• Understand the principles of dimensional analysis and unit consistency.
• Apply unit checking to identify algebraic errors and validate models.
• Demonstrate how units constrain plausible relationships and assist in measurement transformations.+ Show more

Learning Objectives

• Understand the definition of chemical properties and how they differ from physical properties.
• Identify common chemical properties such as flammability, reactivity, oxidation, and stability.
• Interpret observations indicating chemical reactions, including gas evolution, precipitate formation, and color change.+ Show more

Learning Objectives

• Understand the concept of adaptive radiation and its role in biodiversity.
• Identify key factors that drive rapid species diversification.
• Recognize examples and processes involved in adaptive radiation.+ Show more

Learning Objectives

• Describe how different organelles in a cell coordinate to maintain cellular functions.
• Explain the flow of genetic information and protein trafficking from the nucleus to secretion.
• Identify the roles of mitochondria, lysosomes, and peroxisomes in energy production and recycling.

Learning Objectives

• Explain how major organ systems (circulatory, respiratory, digestive, renal, nervous, endocrine) work together to maintain homeostasis
• Describe how feedback communication helps coordinate body functions under changing external conditions
• Use evidence from a reading passage to connect organ system roles with specific physiological outcomes

Learning Objectives

• Understand the importance of balancing chemical equations to obey the conservation of atoms and mass.
• Identify the correct coefficients to balance chemical reactions.
• Relate formula notation to measurable mass relationships in chemical reactions.+ Show more

Learning Objectives

• Understand the mechanisms of energy loss in electrical systems.
• Identify strategies to improve system efficiency and reduce environmental impact.
• Compare different device options and design considerations for energy-efficient systems.+ Show more

Learning Objectives

• Understand the fundamental mechanisms driving evolution, including natural selection, genetic drift, mutation, and gene flow.
• Describe how these mechanisms influence allele frequencies and lead to change in populations over time.
• Explain how populations adapt, diverge, and show long-term genetic and trait changes due to evolutionary processes.

Learning Objectives

• Explain Mendelian inheritance and its principles of segregation and independent assortment.
• Identify and differentiate between Mendelian and non-Mendelian inheritance patterns.
• Recognize how environmental factors and gene linkage influence phenotypic traits.+ Show more

Learning Objectives

• Explain the basic mechanisms of natural selection and how it contributes to evolution.
• Identify examples of natural selection in nature, such as beak variation in finches and antibiotic resistance in bacteria.
• Describe different types of selection: directional, stabilizing, and disruptive.+ Show more

Learning Objectives

• Describe Mendelian patterns like segregation and independent assortment.
• Identify and compare non-Mendelian inheritance patterns such as incomplete dominance and codominance.
• Recognize how environmental factors and gene linkage influence trait expression.+ Show more

Learning Objectives

• Describe the basic components and organization of the phospholipid bilayer.
• Explain the roles of integral and peripheral proteins in membrane function.
• Understand how cholesterol and carbohydrate chains influence membrane fluidity and recognition.+ Show more

Learning Objectives

• Understand how to interpret coefficient ratios in balanced chemical equations
• Relate chemical equation coefficients to quantities of reactants and products
• Apply proportional reasoning to real-world chemical problems involving mass

Learning Objectives

• Identify the symbols of common elements.
• Understand how chemical formulas represent compounds.
• Learn the significance of element symbols in scientific communication.+ Show more

Learning Objectives

• Understand the chemical processes involved in acid deposition
• Identify the environmental impacts of acid rain on limestone formations
• Analyze real-world examples of acid rain effects in regional contexts+ Show more