Grade 9 Science Worksheets

Learning Objectives

• Describe the role of genes as segments of DNA that encode proteins and regulatory elements.
• Explain the processes of transcription and translation in gene expression.
• Understand how gene regulation affects phenotype and trait variation.+ Show more

Learning Objectives

• Explain how photosynthesis converts light energy into chemical energy in plants.
• Describe the role of autotrophs as producers in ecosystems.
• Identify the process of cellular respiration and its importance for energy release.+ Show more

Learning Objectives

• Explain how biodiversity supports ecosystem stability and resilience.
• Describe how environmental change and human activities can alter biodiversity.
• Connect shifts in biodiversity to changes in ecosystem functions like matter and energy cycles.

Learning Objectives

• Explain how protons, neutrons, and electrons form an atom’s structure and determine atomic identity and behavior.
• Differentiate atomic number, atomic mass, and isotopes using the roles of nucleons (protons and neutrons).
• Use electron energy regions to predict why atoms form different bonding patterns.

Learning Objectives

• Explain how the number of protons determines an element’s identity and relates to its chemical symbol.
• Describe how atomic models represent atomic identity, including the meaning of subatomic particles in those models.
• Differentiate metallic and nonmetallic characteristics using representative elements (iron, carbon, oxygen).+ Show more

Learning Objectives

• Describe what makes up an organ and its tissue organization
• Explain the purpose of different organ systems and their coordination
• Identify examples of organs and system functions in humans+ Show more

Learning Objectives

• Explain how DNA sequence information flows to phenotype through replication, transcription, RNA processing, and translation.
• Predict how point mutations and regulatory changes can alter gene expression and protein function.
• Compare the likely effects of coding-region vs regulatory-region mutations in single-gene and polygenic contexts.

Learning Objectives

• Explain the particle model as a framework for understanding states of matter, diffusion, and temperature effects.
• Relate microscopic particle motion to observable macroscopic phenomena such as gas pressure and diffusion rate.
• Describe how particle arrangement and interactions determine phase stability and response to energy changes.

Learning Objectives

• Understand the concept of action–reaction force pairs in Newton's third law.
• Identify equal magnitude and opposite direction forces in various interactions.
• Analyze phenomena such as propulsion, gravitational attraction, and collisions through force pairs.+ Show more

Learning Objectives

• Understand the differences between series and parallel circuits in terms of current and voltage.
• Identify examples of series and parallel circuits in real-world settings.
• Explain how load distribution affects circuit performance and reliability.+ Show more

Learning Objectives

• Use kinematics, net-force reasoning, and energy ideas together to explain motion in Grade 9 physics problems.
• Connect free-body diagrams and force balances to acceleration and motion graphs.
• Apply energy and friction/grade effects to predict quantities such as stopping distance or speed.

Learning Objectives

• Explain how organelles coordinate to move genetic information and proteins through the cell.
• Describe how mitochondria, lysosomes, and peroxisomes contribute to energy use, recycling, and detoxification.
• Use cause-and-effect reasoning to connect organelle functions to cellular homeostasis.+ Show more

Learning Objectives

• Explain the difference between passive and active transport mechanisms across cell membranes.
• Identify the processes involved in vesicular transport such as endocytosis and exocytosis.
• Describe how membrane transport affects cell function and homeostasis.+ Show more

Learning Objectives

• Understand key ethical considerations in biotechnology, including privacy, consent, and ecological impact.
• Analyze societal implications and regulatory frameworks related to genetic manipulation.
• Evaluate risks and benefits associated with biotechnological advancements.+ Show more

Learning Objectives

• Explain how differences in organelle form and abundance relate to specialized cellular functions
• Use examples (smooth ER, mitochondria, vacuoles, cilia/flagella) to connect structure to function
• Compare cell adaptations in animals and plants using evidence from organelle structure+ Show more

Learning Objectives

• Understand the principles of algebraic and computational models in system analysis.
• Apply parameter estimation and numerical tuning techniques in modeling scenarios.
• Develop and evaluate performance objective functions for system optimization.+ Show more

Learning Objectives

• Understand how environmental exposures influence health outcomes.
• Identify key pollutants and their effects on cellular and organ systems.
• Explain dose-response relationships and vulnerability factors in environmental health.+ Show more

Learning Objectives

• Evaluate how environmental exposures and lifestyle choices can increase risk for chronic diseases using mechanistic and epidemiological reasoning.
• Explain how dose–response relationships and vulnerability factors influence the likelihood and severity of health outcomes.
• Analyze how pollutants and chemical toxicants can affect cellular and organ-system functions such as DNA integrity, endocrine signaling, and transport processes.

Learning Objectives

• Understand the formation of the solar system from a protoplanetary disk.
• Identify evidence supporting planetary formation theories.
• Describe the differences between inner rocky planets and outer gas giants.+ Show more

Learning Objectives

• Explain how simple machines change input force and displacement to achieve mechanical advantage
• Classify levers by fulcrum, effort, and load positions and predict how motion direction changes
• Compare ideal mechanical advantage with real performance by accounting for friction and deformation+ Show more

Learning Objectives

• Describe the daily and seasonal apparent movement of the Sun and stars in the sky.
• Identify the causes of diurnal and annual motion observed from Earth.
• Use celestial coordinate concepts such as altitude and azimuth to explain the position of celestial objects.+ Show more

Learning Objectives

• Describe the processes involved in solution formation and dissolution.
• Identify factors that affect solubility, such as temperature and agitation.
• Differentiate between saturated, unsaturated, and supersaturated solutions with examples.+ Show more

Learning Objectives

• Describe the layered structure of Earth's interior based on seismic, gravity, and heat-flow evidence.
• Interpret the behavior of P-waves and S-waves to understand Earth's internal composition.
• Explain how density contrasts and temperature gradients influence mantle convection and material cycling.+ Show more

Learning Objectives

• Understand the concept of centripetal force and its role in circular motion.
• Identify the relationship between speed, radius, and acceleration in uniform circular motion.
• Analyze how tension, friction, and normal force contribute to maintaining curved trajectories.+ Show more

Learning Objectives

• Identify observable signs that indicate a chemical change has occurred.
• Distinguish between physical and chemical changes based on evidence.
• Recognize real-world examples of chemical change in environmental and industrial contexts.+ Show more

Learning Objectives

• Analyze how multiple factors influence ecosystem responses and stability.
• Understand trophic interactions, feedback loops, and material fluxes in ecosystems.
• Evaluate the impacts of climate variability, land-use change, and species introductions.+ Show more

Learning Objectives

• Understand the concepts of electric current, voltage, and resistance
• Identify units and symbols associated with electrical quantities
• Relate electrical quantities to real-world household and regional electrical systems+ Show more

Learning Objectives

• Identify different inheritance patterns including Mendelian and non-Mendelian types.
• Understand how single-gene and complex traits are inherited and expressed.
• Differentiate between dominant, recessive, incomplete dominance, codominance, and other patterns.+ Show more

Learning Objectives

• Define inertia and explain its relation to an object's mass.
• Describe real-world examples of inertia in everyday life.
• Analyze how forces overcome inertia to change an object's motion.+ Show more

Learning Objectives

• Understand how mechanical energy converts into thermal energy through friction and air resistance.
• Identify examples of energy transformation in real-world scenarios.
• Explain the role of energy conservation in different systems.+ Show more

Learning Objectives

• Understand the concept of compound machines and how they are made of simple machines.
• Identify different types of simple machines such as gears, pulleys, levers, and inclined planes.
• Calculate the mechanical advantage of compound machines using force and displacement relationships.+ Show more

Learning Objectives

• Understand the origin and basic properties of magnetic fields.
• Identify the relationship between electric current and magnetic field orientation.
• Explain real-world applications of magnetic fields in navigation and industry.+ Show more

Learning Objectives

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

Learning Objectives

• Explain what work is as an energy transfer caused by a force acting through a displacement
• Determine the sign of work (positive, zero, or negative) based on the direction of force and displacement
• Use the relationship between work and changes in kinetic and potential energy to analyze real situations

Learning Objectives

• Explain the mechanisms of inheritance including meiosis, Mendelian patterns, and deviations.
• Use Punnett squares, pedigree analysis, and probability calculations to predict genotypic and phenotypic ratios.
• Understand how alterations in genes influence observable traits through dominance, penetrance, and gene interactions.+ Show more

Learning Objectives

• Explain the concept of natural selection and its role in evolution.
• Identify examples of natural selection in nature.
• Differentiate between types of selection: directional, stabilizing, and disruptive.+ Show more

Learning Objectives

• Understand how nucleic acid sequences determine amino acid chains and protein structures.
• Explain how macromolecular structures influence organelle architecture and cellular functions.
• Connect molecular coding and folding to specific cellular components like ribosomes, endoplasmic reticulum, and mitochondria.+ Show more

Learning Objectives

• Define what a crystal lattice is and explain its significance.
• Identify the different types of lattice structures such as ionic, metallic, and covalent networks.
• Understand how atomic arrangements influence the properties of solids.+ Show more

Learning Objectives

• Explain how scale models help connect observable features of the night sky to real distances and sizes in the solar system.
• Describe how perspective affects apparent motion and brightness of planets as Earth orbits the Sun.
• Use relative reasoning about orbital periods and repeating patterns to interpret sky observations.

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

• Explain how net external force relates to acceleration using Newton’s second law
• Use free-body diagrams to identify and sum all forces acting on an object
• Predict changes in motion for scenarios involving contact forces and field forces (including tension and friction)

Learning Objectives

• Explain the main stages in moving electricity from generation to consumers.
• Describe how voltage transformation supports long-distance power transmission.
• Use a simple sequence to predict how faults can spread through a network.+ Show more

Learning Objectives

• Explain how light can behave as a wave and as a stream of particles, depending on the interaction being observed.
• Describe how interference and diffraction support the wave model of electromagnetic radiation.
• Describe how the photoelectric effect supports the particle model of light energy.+ Show more

Learning Objectives

• Understand the purpose and components of free-body diagrams
• Identify forces acting on an object in different scenarios
• Learn the conventions for drawing force vectors including size, direction, and point of application+ Show more

Learning Objectives

• Understand the composition and characteristics of Earth's main layers: crust, mantle, and core.
• Explain how density, temperature, and pressure change with depth inside a planet.
• Distinguish between mechanical behaviors of lithosphere and asthenosphere.+ Show more

Learning Objectives

• Understand how microscopes provide visual models of cell structures and scales.
• Identify different types of microscopes and their uses in cell observation.
• Explain how diagrammatic and physical models help interpret microscopic observations.+ Show more

Learning Objectives

• Understand how air pollutants affect cellular health.
• Identify common air pollutants and their sources.
• Recognize the health risks associated with air pollution exposure.+ Show more

Learning Objectives

• Understand the ecological, economic, and health risks associated with genetic technologies.
• Evaluate potential consequences such as gene flow, resistance development, market impacts, and therapeutic opportunities.
• Analyze case examples like canola introgression and cattle genetics in Alberta.+ Show more