Grade 9 Science Worksheets

Learning Objectives

• Identify the main components of the solar system
• Describe the relative sizes and distances of planets from the Sun
• Understand the concept of scale in astronomical observations+ Show more

Learning Objectives

• Explain the purpose of the Calvin cycle in photosynthesis and what it produces
• Describe the main stages of the Calvin cycle (carbon fixation, reduction, and regeneration) and their key inputs
• Identify the roles of ATP, NADPH, and Rubisco in carbon assimilation+ Show more

Learning Objectives

• Explain how chemical elements like carbon, nitrogen, and phosphorus cycle between organisms and the physical environment.
• Describe how respiration, decomposition, and nutrient uptake connect living things to air, water, and soil.
• Distinguish matter cycling from energy flow in trophic transfers.

Learning Objectives

• Understand the types of simple machines and how they transfer force.
• Explore the concepts of mechanical advantage and energy distribution in simple systems.
• Differentiate between ideal and actual mechanical advantage considering friction and support geometry.+ Show more

Learning Objectives

• Understand how mass affects acceleration when a net force is applied.
• Distinguish between inertial mass and gravitational effects in response to forces.
• Apply the force–acceleration relationship to solve quantitative problems involving mass.+ Show more

Learning Objectives

• Explain the principles of gravitational interactions governing planetary and satellite trajectories.
• Describe Kepler's laws and Newton's law of universal gravitation as they relate to orbital motion.
• Analyze the relationships between orbital period, semi-major axis, and escape velocity using real-world examples.+ Show more

Learning Objectives

• Explain how the kidney forms urine through glomerular filtration, selective reabsorption, secretion, and urine concentration.
• Describe how hydrostatic pressure and oncotic pressure drive glomerular filtration.
• Analyze tubular mechanisms (including countercurrent multiplication) that reclaim water and concentrate solutes.+ Show more

Learning Objectives

• Explain how Earth’s rotation and orbital motion produce predictable day–night and sky-observed cycles.
• Distinguish sidereal and solar periods and describe how their differences affect what observers measure.
• Describe how Earth–Moon–Sun gravitational interactions lead to tidal phenomena with regular patterns.

Learning Objectives

• Identify the components of biogeochemical cycles.
• Understand the role of cycles in maintaining ecosystem health.
• Recognize the processes involved in the movement of elements such as carbon, nitrogen, and phosphorus.+ Show more

Learning Objectives

• Explain how gravity provides the centripetal force that keeps planets and moons in curved orbital paths.
• Describe how changing distance from the Sun affects orbital speed and orbital period.
• Use evidence from regular sky patterns to support the idea of predictable orbital motion.

Learning Objectives

• Explain how information flows from DNA to RNA to protein and how changes at each step can affect phenotype.
• Analyze how DNA replication fidelity and point mutations can influence transcription, RNA processing, and translation.
• Compare the potential phenotypic impact of regulatory-region mutations versus coding-region mutations in single-gene and polygenic contexts.

Learning Objectives

• Explain how the hypothalamus and thermoreceptors coordinate thermoregulation using feedback loops
• Describe how vasodilation, vasoconstriction, and sweating affect heat loss and heat gain
• Compare behavioral and metabolic responses (including shivering) during different environmental conditions

Learning Objectives

• Explain gas pressure, volume, and temperature using the particle model
• Describe how particle collisions and kinetic energy relate to observable pressure changes
• Predict qualitative changes in gas behavior when temperature or volume changes

Learning Objectives

• Understand and define physical properties as observable or measurable characteristics of materials.
• Identify common physical properties such as density, melting point, boiling point, colour, hardness, and conductivity.
• Interpret how physical properties are used to classify and separate different materials.+ Show more

Learning Objectives

• Describe the main pathways of cellular energy metabolism, including glycolysis, the citric acid cycle, and oxidative phosphorylation.
• Explain how mitochondrial structure supports ATP production and energy conversion.
• Differentiate between aerobic and anaerobic energy pathways and their tissue-specific applications.+ Show more

Learning Objectives

• Describe how catabolic and anabolic pathways are interconnected in metabolism.
• Explain how hormonal signals and nutrient availability influence metabolic priorities.
• Identify mechanisms controlling enzyme activity during immediate and long-term metabolic responses.+ Show more

Learning Objectives

• Understand the process of seafloor spreading at mid-ocean ridges.
• Identify how magnetic striping provides evidence for symmetrical reversals in Earth's magnetic field.
• Describe how oceanic crust age progression helps document plate movements and ocean basin cycles.+ Show more

Learning Objectives

• Explain how climate variability differs from long-term climate trends
• Describe how ocean-atmosphere interactions (El Niño and La Niña) can shift weather patterns
• Use evidence from multiple timescales to distinguish natural variability from sustained climate change

Learning Objectives

• Understand the composition of an atom, including protons, neutrons, and electrons.
• Identify how proton number determines the element type.
• Explain the significance of isotopes and atomic mass.+ Show more

Learning Objectives

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

Learning Objectives

• Understand the fundamental concepts of Newton's laws of motion.
• Analyze force diagrams, including free-body diagrams and force components.
• Apply Newton's second law to solve problems involving acceleration and net force.+ Show more

Learning Objectives

• Define alleles and understand their role in genetics.
• Explain how different combinations of alleles influence traits.
• Identify the concepts of dominance and recessiveness in inheritance.+ Show more

Learning Objectives

• Understand the key functions of cell membranes and energy use.
• Connect cell structures to their functions in maintaining internal balance, growth, and response.
• Interpret evidence like uptake rates and growth patterns to relate structure to function.+ Show more

Learning Objectives

• Identify and describe conduction, convection, and radiation as different modes of heat transfer
• Explain how particle motion, fluid motion, and electromagnetic waves relate to each heat transfer mode
• Apply heat transfer concepts to real-world situations involving everyday temperature change+ Show more

Learning Objectives

• Explain the interactions among organisms and abiotic components that drive material cycling in ecosystems.
• Describe the processes of the carbon and nitrogen cycles and their importance.
• Analyze how perturbations like nutrient enrichment and invasive species affect ecosystem structure and function.+ Show more

Learning Objectives

• Understand the concept of integrated environmental models
• Learn how models simulate interactions between the geosphere, hydrosphere, atmosphere, and biosphere
• Identify the importance of model structure, parameters, and uncertainty in environmental predictions+ Show more

Learning Objectives

• Understand the basic principles of scaling laws and proportional reasoning.
• Recognize how similarity and nonlinearity influence scientific models.
• Interpret data across different spatial and temporal scales.+ Show more

Learning Objectives

• Explain how genetic information flows from DNA to RNA to proteins.
• Describe how protein structure determines protein function in cells.
• Use DNA mutations to predict possible effects on protein sequences and cell traits.

Learning Objectives

• Explain how the direction of a net force relative to motion affects whether work increases or decreases kinetic energy.
• Apply the idea of work as energy transfer to everyday situations involving acceleration, slowing, and friction.
• Differentiate energy changes in kinetic energy versus stored gravitational potential energy during lifting at constant speed.

Learning Objectives

• Understand the key factors that influence Earth's climate.
• Describe how solar energy and internal heat drive climate systems.
• Identify the roles of different Earth systems in climate variability.+ Show more

Learning Objectives

• Understand different mechanisms of energy transfer
• Identify examples of work, thermal transfer, and radiation
• Learn the distinction between stored energy and transferred energy+ Show more

Learning Objectives

• Differentiate homogeneous and heterogeneous mixtures using particle-level evidence and everyday examples.
• Explain how distinct physical properties (particle size, solubility, boiling point, and density) allow separation without changing substances.
• Match separation methods (filtration, distillation, magnetic separation, decanting) to the property being used.

Learning Objectives

• Describe the processes involved in the rock cycle, including melting, crystallization, weathering, transport, deposition, and metamorphism.
• Explain how tectonic settings influence rock formation and transformation.
• Identify the types of rocks associated with different geological processes and settings.+ Show more

Learning Objectives

• Explain how the body’s organizational levels progress from cells to tissues, organs, and organ systems.
• Describe how organ systems interact to maintain coordinated body functions (homeostasis).
• Use examples such as circulatory-respiratory coupling, digestive-vascular nutrient distribution, and nervous-endocrine regulation to justify system interdependence.

Learning Objectives

• Explain how cell membranes regulate transport to maintain homeostasis.
• Describe how cells use energy (ATP) to power chemical reactions involved in growth and survival.
• Use evidence such as uptake rates and growth patterns to connect cell structure and function.+ Show more

Learning Objectives

• Understand the basic shapes of molecules such as linear, trigonal planar, tetrahedral, and bent.
• Learn how electron pair repulsion influences molecular shape.
• Identify how molecular geometry impacts properties like polarity and reactivity.

Learning Objectives

• Explain how energy flows through food chains in one direction and decreases at each trophic level.
• Describe how matter cycles through biological systems by rearranging atoms during processes like photosynthesis and cellular respiration.
• Use evidence such as trophic relationships and biomass changes to interpret energy transfer and matter cycling.

Learning Objectives

• Understand the concepts of endothermic and exothermic reactions and how energy is absorbed or released.
• Explain how bond breaking and formation relate to energy changes during chemical reactions.
• Interpret energy diagrams to connect molecular interactions with observable temperature and phase changes.+ Show more

Learning Objectives

• Explain what power means in terms of the rate of energy transfer or the rate of doing work.
• Compare power in two scenarios using the relationship between energy transferred and time.
• Apply power and rate reasoning to real-world devices such as motors and appliances.

Learning Objectives

• Calculate center of mass from component masses and positions
• Calculate torque using force and perpendicular moment arm
• Determine static equilibrium using net force and net torque+ Show more

Learning Objectives

• Understand how greenhouse gases trap outgoing radiation and influence Earth's surface temperature.
• Identify the natural and human sources of greenhouse gases.
• Analyze how small changes in atmospheric composition can impact climate patterns.+ Show more

Learning Objectives

• Explain how land conversion, pollution, resource extraction, invasive species, and greenhouse gas emissions can change biodiversity and ecosystem functioning.
• Describe how habitat fragmentation and chemical or nutrient changes can alter species interactions, community composition, and trophic relationships.
• Connect changes in species diversity to ecosystem services such as pollination, water purification, and soil formation.

Learning Objectives

• Define physical properties and understand their significance in classifying matter.
• Identify and describe examples of physical properties such as density, melting point, boiling point, colour, hardness, and conductivity.
• Distinguish between intensive and extensive properties and explain their roles in material assessment.+ Show more

Learning Objectives

• Explain the processes of ocean–atmosphere interactions and their impact on climate variability.
• Identify phenomena such as ENSO and understand their mechanisms and effects on regional weather patterns.
• Analyze time-series data and interpret lag-correlation maps related to ocean–atmosphere coupling.+ Show more

Learning Objectives

• Understand the basic principles of Mendelian inheritance.
• Identify dominant and recessive traits in organisms.
• Differentiate between Mendelian and non-Mendelian inheritance patterns.

Learning Objectives

• Understand the difference between series and parallel circuits
• Identify characteristics of each circuit type
• Apply basic principles to distinguish circuit configurations

Learning Objectives

• Understand the process of phase changes in terms of energy transfer and particle motion.
• Identify the energy involved in melting, vaporization, sublimation, and condensation.
• Explain how temperature remains constant during certain phase transitions despite energy transfer.+ Show more

Learning Objectives

• Use conservation of mass and typical chemical patterns to predict likely reaction products.
• Classify reactions by type (synthesis, decomposition, oxidation, neutralization) and connect each type to common outcomes.
• Justify predicted products by checking element balance, charge balance, and observable clues.