Grade 9 Worksheets

Learning Objectives

• Identify and describe the basic parts and types of waves
• Explain wave behavior through amplitude, frequency, wavelength, and phase
• Understand the relationship between wave speed, frequency, and wavelength+ Show more

Learning Objectives

• Understand the concepts of kinetic and potential energy and their mathematical relationships.
• Describe work, power, and energy transfer in mechanical systems.
• Analyze phenomena such as pendulum motion and roller-coaster height-to-speed relationships using energy conservation principles.

Learning Objectives

• Understand the basic principles of VSEPR theory to predict molecular shapes.
• Identify common molecular geometries such as linear, trigonal planar, tetrahedral, and bent.
• Explain how molecular shape influences properties like polarity and reactivity.+ Show more

Learning Objectives

• Understand the role of kidneys in osmoregulation and fluid balance.
• Identify processes such as filtration, reabsorption, secretion, and concentration in the nephron.
• Explain how hormones like antidiuretic hormone (ADH) and aldosterone regulate fluid and ion balance.+ Show more

Learning Objectives

• Understand how surface temperature records are used to identify climate trends.
• Interpret spatial and temporal climate datasets, including temperature and precipitation maps.
• Apply basic statistical methods to analyze long-term climate data.+ Show more

Learning Objectives

• Understand how organelle morphology varies across different cell types and taxa.
• Identify examples of structural adaptations in cell organelles related to specialized functions.
• Relate cellular structure differences to organismal physiology and ecological strategies.+ Show more

Learning Objectives

• Describe the different types of simple machines and their functions.
• Explain how simple machines reduce effort and change the direction of force.
• Differentiate between ideal and actual mechanical advantage in systems involving simple machines.+ Show more

Learning Objectives

• Understand the major reservoirs of carbon and their roles in the Earth's carbon cycle.
• Describe the fluxes that move carbon among the atmosphere, biosphere, oceans, and geosphere.
• Quantify basic carbon exchanges and residence times.+ Show more

Learning Objectives

• Describe the apparent daily and yearly motion of celestial objects as observed from Earth.
• Explain how Earth's rotation and revolution create predictable sky patterns.
• Relate celestial coordinate concepts like altitude, azimuth, and rising/setting to observation.+ Show more

Learning Objectives

• Explain the geometric relationships that produce lunar and solar phases.
• Differentiate between partial, total, and annular eclipses.
• Identify the conditions necessary for eclipses to occur, including node alignment and orbital inclination.+ Show more

Learning Objectives

• Understand and interpret standardized symbols used in circuit diagrams.
• Translate physical circuits into schematic models for analysis and communication.
• Identify components, nodes, and connection types within circuit diagrams.+ Show more

Learning Objectives

• Understand the basic operating principles of electric motors and generators.
• Identify different types of motors and their applications.
• Match performance characteristics to load requirements in electromagnetic devices.+ Show more

Learning Objectives

• Understand the role of fossil evidence in understanding evolution
• Identify transitional fossils and their significance
• Compare anatomical features across species to infer common ancestry+ Show more

Learning Objectives

• Identify a text’s main idea and distinguish it from supporting details
• Analyze how details reinforce a central claim or concern in both literary and informational passages
• Use transitions and sentence connections to explain how ideas build across a passage+ Show more

Learning Objectives

• Understand the differences between fossil fuel extraction and renewable energy sources.
• Analyze the causes and consequences of energy system changes on society and environment.
• Evaluate the significance of energy transition for national security and local economies.+ Show more

Learning Objectives

• Explain key ethical concerns related to genetic technologies, including privacy, consent, and fair access to benefits.
• Analyze trade-offs between scientific innovation and potential harms in real-world contexts such as crops, veterinary care, and biobanking.
• Evaluate how policy and public dialogue can support responsible decision-making across different stakeholder groups.

Learning Objectives

• Understand the concept of center of mass and how it affects an object's stability.
• Apply torque and equilibrium principles to analyze static systems.
• Calculate the moments and tipping thresholds for various rigid bodies.+ Show more

Learning Objectives

• Understand the mathematical representation of gravitational and electrostatic forces and their inverse-square dependence.
• Apply force equations to calculate magnitudes and directions of forces between objects.
• Interpret vector directions in force interactions and predict net force outcomes.+ Show more

Learning Objectives

• Explain 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 given scenarios.+ Show more

Learning Objectives

• Describe the vector nature of electric and magnetic fields and how they interact with charges.
• Explain the concept of superposition in electric and magnetic fields.
• Apply the principles of Lorentz force to predict particle motion in combined electric and magnetic fields.+ Show more

Learning Objectives

• Understand how fossils provide evidence for evolution
• Recognize the significance of transitional fossils and homologous structures
• Learn how molecular sequences support common ancestry+ Show more

Learning Objectives

• Describe the processes involved in the dissolving of solutes in solvents.
• Explain how solute-solvent interactions influence solution types.
• Identify factors such as temperature and agitation that affect solubility.+ Show more

Learning Objectives

• Define circular motion and identify the key forces involved.
• Explain the concept of centripetal force and its role in circular motion.
• Analyze how speed and radius affect acceleration in circular motion.+ Show more

Learning Objectives

• Understand the mechanisms of gene regulation, signal transduction, and intercellular communication.
• Identify examples of molecular signaling pathways such as insulin-mediated glucose uptake and receptor tyrosine kinase cascades.
• Explain how molecular regulation affects cellular functions and physiological outcomes.+ Show more

Learning Objectives

• Understand how urbanization and deforestation influence watershed processes
• Identify environmental consequences of human modifications to watersheds
• Evaluate measurement indicators used to assess watershed health+ Show more

Learning Objectives

• Understand different types of scientific models: mathematical, graphical, schematic, and computational.
• Evaluate criteria for selecting appropriate models based on fidelity, simplicity, and predictive ability.
• Interpret how models link to measurable observables and empirical evidence.+ Show more

Learning Objectives

• Understand the concept of energy conservation within different systems.
• Learn to represent energy transfers using diagrams and mathematical models.
• Identify and trace energy reservoirs during physical and chemical processes.+ Show more

Learning Objectives

• Explain that compounds contain two or more elements in fixed ratios and how this is reflected in chemical formulas.
• Differentiate ionic and covalent bonding and predict how bonding affects macroscopic properties like melting point and conductivity.
• Apply the law of definite composition and use formulas to reason about predictable mass relationships in compounds.+ Show more

Learning Objectives

• Construct and interpret phylogenetic trees using morphological characters and molecular sequence data.
• Explain cladistic ideas such as shared derived characters and the role of outgroups in defining clades.
• Compare common tree-building approaches (parsimony and molecular distance) and describe how molecular clocks calibrate time.

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

• Describe the key biochemical pathways involved in cellular metabolism, including glycolysis, the citric acid cycle, and oxidative phosphorylation.
• Explain how ATP is produced and energy is conserved and transferred within cells during metabolic processes.
• Relate organelles such as mitochondria and chloroplasts to their roles in energy metabolism and photosynthesis.+ Show more

Learning Objectives

• Calculate the center of mass for simple composite systems and interpret what it means for balance
• Use moment and net-torque ideas to determine static equilibrium conditions
• Analyze tipping stability by comparing the line of action through the center of mass with a support base

Learning Objectives

• Understand key ethical considerations in biotechnology, including societal, environmental, and health impacts.
• Identify and evaluate issues related to genetic privacy, informed consent, and equitable access.
• Analyze how regulation and public engagement shape biotech policy decisions.+ Show more

Learning Objectives

• Differentiate climate from short-term weather and explain why climate is based on long-term patterns
• Describe how latitude, atmospheric circulation, and distance from water influence temperature and precipitation
• Explain how local factors (elevation and prevailing winds) shape regional climate and related ecosystems

Learning Objectives

• Identify examples of Indigenous–settler cooperation, alliances, and conflict.
• Explain how different worldviews influenced historical land agreements.
• Analyze how settlement expansion increased competition for resources.+ Show more

Learning Objectives

• Identify how rhetorical strategies (rhetorical questions, appeals to emotion and reason) shape an author’s message
• Analyze how evidence is used, including specificity and possible bias
• Evaluate how counterarguments are addressed and how that supports the author’s purpose

Learning Objectives

• Understand the core relationships among displacement, velocity, and acceleration in motion along a straight line.
• Interpret position–time and velocity–time graphs to analyze motion.
• Apply constant-acceleration equations to solve kinematic problems.+ Show more

Learning Objectives

• Identify key leadership traits that contribute to effective presidency.
• Analyze historical examples of presidential decision-making influenced by personal qualities.
• Reflect on the social-emotional qualities such as empathy and ethics in leadership.+ Show more

Learning Objectives

• Describe the geometry and conditions that produce lunar and solar eclipses.
• Distinguish between partial, total, and annular lunar and solar eclipses.
• Explain the relationship between lunar phases, tidal effects, and historical navigation uses.+ Show more

Learning Objectives

• Understand the different mechanisms that complicate inheritance beyond simple Mendelian ratios.
• Identify examples of polygenic traits, epistasis, and pleiotropy in genetic inheritance.
• Explain how environmental factors influence phenotypic expression.+ Show more

Learning Objectives

• Understand the concepts of ecological resilience and resistance in ecosystems.
• Identify factors that influence an ecosystem's ability to withstand disturbance and recover.
• Explain how crossing thresholds can lead to regime shifts and alternative community states.+ Show more

Learning Objectives

• Understand the factors contributing to air pollution caused by human activities.
• Analyze how different actions impact air quality and ecosystem health.
• Evaluate the tradeoffs involved in reducing air pollution while considering other environmental constraints.+ Show more

Learning Objectives

• Define and explain the key control criteria used in establishing causality and their importance.
• Analyze how variable isolation, replication, baseline characterization, and reference conditions influence causal interpretation.
• Evaluate the impact of residual confounding and uncontrolled variation on the strength of causal claims.+ Show more

Learning Objectives

• Define sex chromosomes and explain their functions.
• Describe how sex-linked traits are inherited.
• Distinguish between X-linked recessive and dominant traits.+ Show more

Learning Objectives

• Understand how to interpret displacement–time, velocity–time, and acceleration–time graphs.
• Learn how to determine physical quantities such as speed, acceleration, and displacement from graphs.
• Recognize the significance of slope and area under the curve in motion graphs.+ Show more

Learning Objectives

• Describe the types of intermolecular forces and their effects on physical properties.
• Differentiate between London dispersion forces, dipole–dipole interactions, and hydrogen bonding.
• Explain how molecular size and polarity influence the strength of intermolecular forces.+ Show more

Learning Objectives

• Analyze the societal uses, benefits, and risks associated with everyday chemicals.
• Evaluate how chemical properties influence environmental persistence and routes of exposure.
• Discuss the importance of safe handling, disposal, and regulation of chemicals in society.+ Show more

Learning Objectives

• Understand the genetic mechanisms that generate heritable diversity in populations.
• Identify how point mutations, chromosomal rearrangements, and meiotic processes contribute to phenotypic variation.
• Explain the connection between molecular changes and alterations in gene expression and protein function.+ Show more