Grade 9 Science Worksheets

Learning Objectives

• Understand the different types of force interactions in physics.
• Identify examples of forces and their effects.
• Explain Newton's third law of motion.+ Show more

Learning Objectives

• Explain how a design functions as part of a larger system using matter, energy, and information flows
• Identify feedback and unintended effects that can occur when system components interact
• Use systems thinking to evaluate boundary conditions and how system behavior changes over time+ Show more

Learning Objectives

• Describe the structure and function of the nephron in blood filtration and urine formation.
• Explain the process of glomerular filtration driven by hydrostatic and oncotic pressures.
• Analyze tubular mechanisms for reabsorbing water and solutes during urine concentration.+ Show more

Learning Objectives

• Explain how multiple simple machines combine to form compound machines and analyze their mechanical advantage.
• Calculate overall mechanical advantage using force and displacement relationships in compound systems.
• Differentiate between ideal and actual mechanical advantage, and understand the effects of friction and deformation.+ Show more

Learning Objectives

• Explain how work depends on force and distance and how units connect to energy transfer
• Describe how simple machines change force magnitude and/or direction
• Use mechanical advantage and trade-offs (force vs distance) to predict machine performance

Learning Objectives

• Identify the four principal tissue classes and their key features.
• Describe examples of specialized epithelial, connective, and muscle tissues.
• Explain how tissue architecture relates to organ function.+ Show more

Learning Objectives

• Identify and describe the four principal tissue classes: epithelial, connective, muscle, and nervous.
• Explain the cellular composition and extracellular matrix roles of each tissue type.
• Differentiate specialized epithelial tissues for absorption and secretion.+ 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

• Explain how distance and time relate to speed using data and graphs
• Describe how changing speed over time indicates acceleration
• Distinguish constant speed (linear distance–time pattern) from changing speed (nonlinear pattern)

Learning Objectives

• Explain how conservation of atoms applies to mass measurements during chemical reactions within a defined system boundary.
• Distinguish between open and closed systems and predict how gas escape affects observed (measured) mass.
• Evaluate how instrument sensitivity and external influences can change measured values while conserving total atomic mass in the system.

Learning Objectives

• Understand the concept of scale in the solar system and how sizes and distances vary.
• Analyze planetary motion and how relative scale properties relate to observations.
• Connect apparent brightness and movement to actual distances and orbital periods.+ Show more

Learning Objectives

• Explain how Earth’s rotation produces apparent diurnal motion of celestial objects across the sky.
• Describe how Earth’s revolution around the Sun leads to apparent annual changes in which stars are visible at night.
• Use celestial coordinate ideas (altitude and azimuth) to reason about rising and setting from an Earth observer’s viewpoint.+ Show more

Learning Objectives

• Identify the differences between primary and secondary succession
• Explain key processes and species changes during succession
• Understand factors influencing ecosystem recovery and stability

Learning Objectives

• Define and identify different trophic levels within an ecosystem.
• Describe how food chains and food webs illustrate energy flow.
• Explain the concepts of trophic efficiency and trophic cascades.+ Show more

Learning Objectives

• Understand and describe the key properties of waves, including amplitude, frequency, wavelength, and phase.
• Apply the wave speed formula: wave speed = frequency × wavelength to analyze wave scenarios.
• Explain how sinusoidal functions model wave behavior and describe interference and standing waves.+ Show more

Learning Objectives

• Understand the hierarchy from molecules to organisms
• Identify the properties of each level of biological organization
• Explain how emergent properties develop at higher levels+ Show more

Learning Objectives

• Describe the biochemical pathways involved in cellular respiration, including glycolysis, the citric acid cycle, and electron transport chain.
• Explain how ATP is produced and utilized in energy coupling within cells.
• Relate organelle functions of mitochondria and chloroplasts to metabolic processes like respiration and photosynthesis.+ Show more

Learning Objectives

• Distinguish chemical changes from physical changes by using evidence that new substances form.
• Identify observable indicators of chemical change such as temperature change, gas production, precipitate formation, and persistent color change.
• Explain reactant-to-product transformation using the idea of particles at the microscopic level.

Learning Objectives

• Understand the different components and transition pathways of energy systems.
• Analyze the role of renewable energy, storage, and carbon capture in reducing greenhouse gases.
• Evaluate trade-offs among reliability, cost, and environmental impacts in energy planning.+ Show more

Learning Objectives

• Describe the pathways involved in cellular respiration, including glycolysis, the TCA cycle, and electron transport.
• Explain the differences between aerobic and anaerobic respiration and their implications for ATP production.
• Connect substrate-level phosphorylation and oxidative phosphorylation to ATP yields and redox balances.+ Show more

Learning Objectives

• Understand how to construct and interpret phylogenetic trees using morphological and molecular data.
• Identify shared derived characters and their significance in evolutionary relationships.
• Compare different tree-building methods such as parsimony and molecular distance.+ Show more

Learning Objectives

• Understand the mechanisms that lead to the formation of new species.
• Identify examples of reproductive isolation and geographic separation in speciation.
• Explain models like allopatric and sympatric speciation and their significance.+ Show more

Learning Objectives

• Understand the mechanisms of gene expression regulation and signal transduction pathways.
• Identify canonical molecular pathways such as receptor-ligand binding and hormonal signaling.
• Explain how molecular regulation influences cellular functions and physiological outcomes.+ Show more

Learning Objectives

• Understand the organization of biological systems from cells to organism-level.
• Describe how tissues, organs, and systems interact to maintain organism functions.
• Identify canonical examples of system interactions such as circulatory-respiratory coupling and nervous-endocrine integration.+ Show more

Learning Objectives

• Explain how land-use change, invasive species, pollution, and resource extraction impact biodiversity and ecosystems.
• Interpret empirical data from case studies to evaluate environmental impacts and mitigation strategies.
• Identify trade-offs among conservation efforts and socioecological outcomes.+ Show more

Learning Objectives

• Explain how quantitative measurements constrain scientific claims about motion, forces, energy transfer, and waves.
• Use models to describe patterns and connect variables in a claim, then judge how well the model matches evidence.
• Compare competing explanations by using accuracy, expected relationships, and stated assumptions.

Learning Objectives

• Explain how circulatory, respiratory, digestive, and renal systems contribute to maintaining internal balance
• Describe how nervous and endocrine signaling help coordinate organ systems during changing conditions
• Use cause-and-effect reasoning to connect changes in one system to responses in other systems

Learning Objectives

• Analyze historical atmospheric carbon dioxide records, land-use change, and temperature trends related to human activities.
• Identify key indicators such as the Keeling Curve and satellite data showing ecosystem changes.
• Explain the impacts of fossil fuel combustion, deforestation, and urbanization on climate and ecosystems.+ Show more

Learning Objectives

• Understand the concept of adaptive radiation and its significance in evolution.
• Identify key factors that drive diversification of species in new environments.
• Analyze the processes of ecological speciation and niche partitioning.+ Show more

Learning Objectives

• Understand the transitions between different energy systems and their environmental impacts.
• Evaluate the role of renewable energy, energy storage, and grid technologies in reducing greenhouse gases.
• Analyze life-cycle emissions and trade-offs among reliability, cost, and environmental goals.+ Show more

Learning Objectives

• Understand the differences between solar and lunar eclipses
• Learn how the Sun, Earth, and Moon align to produce eclipses
• Identify the conditions necessary for each type of eclipse+ Show more

Learning Objectives

• Explain how unequal solar heating creates pressure differences that drive atmospheric circulation and winds
• Describe how energy and water vapor transfers between the surface and atmosphere influence clouds and precipitation
• Use the idea of local energy balance (temperature, humidity, pressure) to predict short-term weather patterns

Learning Objectives

• Identify the main idea of a biotechnology text and use details to support it.
• Explain how selective breeding and hybridization can change traits in crops or livestock over generations.
• Connect genetic technology choices to potential benefits and limitations.

Learning Objectives

• Understand the role of genes as DNA segments coding for proteins.
• Explain the processes of transcription and translation in protein synthesis.
• Identify how gene regulation influences phenotypic traits in crops and livestock.+ Show more

Learning Objectives

• Understand how fossils support the theory of evolution.
• Identify different types of fossil evidence.
• Explain how fossils demonstrate gradual change in species over time.

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 the key differences between prokaryotic and eukaryotic cells.
• Identify structural components unique to each cell type.
• Explain how cellular organization influences biological functions.+ Show more

Learning Objectives

• Describe the structure and function of the cardiovascular system.
• Explain how blood flow is regulated to meet tissue demands.
• Identify components of blood and their roles in transport.+ Show more

Learning Objectives

• Explain the concepts of negative and positive feedback in maintaining internal stability.
• Identify physiological examples of feedback loops such as thermoregulation and blood glucose regulation.
• Describe the role of set points, sensors, and effectors in feedback systems.+ Show more

Learning Objectives

• Explain how kinematics, net-force reasoning, and energy considerations work together to predict complex motion.
• Use force balance and energy ideas to determine acceleration and changes in speed during braking.
• Interpret how graphs and equations combine to estimate stopping distance under varying conditions.

Learning Objectives

• Explain how power relates to the rate of energy transfer in everyday and engineering systems
• Calculate and interpret efficiency as the fraction of input energy converted to useful output
• Identify major sources of energy loss and describe how they affect operational limits and design trade-offs

Learning Objectives

• Differentiate speed, velocity, and acceleration using scalar vs. vector ideas and direction conventions.
• Use basic kinematics relationships and unit conversions to compare motion in real contexts.
• Interpret sign conventions for motion and determine whether acceleration is increasing or decreasing velocity.

Learning Objectives

• Understand the processes involved in the rock cycle, including melting, crystallization, erosion, and metamorphism.
• Identify examples of rock transformations such as basalt formation, sandstone deposition, and regional metamorphism.
• Explain how rates, pressure-temperature conditions, and radiometric ages influence the sequencing of rock cycle events.+ Show more

Learning Objectives

• Describe the layered structure of Earth's interior as understood through seismic, gravity, and heat-flow evidence.
• Explain how seismic wave behavior and mantle temperature gradients inform models of Earth's internal processes.
• Identify the relationships between core composition, mantle convection, and planetary thermal evolution.+ Show more

Learning Objectives

• Identify the sequence of events in gene expression
• Explain how transcription and translation convert genetic information into a polypeptide
• Recognize the roles of mRNA, codons, and tRNA in building proteins

Learning Objectives

• Understand the concept of work as energy transfer by force and displacement.
• Identify how simple machines change the magnitude or direction of applied forces.
• Explain the relationships among force, distance, work, and mechanical advantage in practical contexts.+ Show more

Learning Objectives

• Understand how nucleic acid sequences determine amino acid chains and protein structures.
• Connect molecular coding and folding to the architecture and function of cellular organelles.
• Identify examples of proteins that influence cell function, such as hemoglobin and membrane transport proteins.+ Show more

Learning Objectives

• Describe how feedback loops contribute to multi-system coordination in the body.
• Explain the roles of neural, hormonal, and local signals in mediating organism responses.
• Analyze how disruptions in one component of system coordination can cascade to affect overall homeostasis.+ Show more