Grade 9 Science Worksheets

Learning Objectives

• Use conservation of mass and atom rearrangement to predict likely products of chemical reactions
• Identify common reaction types (synthesis, decomposition, neutralization) and their typical outcomes
• Apply balancing and bonding patterns to justify predicted chemical products

Learning Objectives

• Define biogeochemical cycles and identify the main Earth system reservoirs they involve.
• Explain how fluxes such as photosynthesis, decomposition, nitrogen fixation, and weathering move matter.
• Describe how reservoir size and cycle rate can affect ecosystem responses to change.

Learning Objectives

• Explain how fossil records preserve past life through different types of evidence.
• Identify how evidence from fossils supports claims about the timing of change in Earth’s history.
• Describe at least one factor that can limit what the fossil record shows.

Learning Objectives

• Explain how matter cycles through ecosystems using examples of carbon, nitrogen, and phosphorus.
• Describe how respiration, decomposition, and nutrient uptake connect organisms to air, water, and soil.
• Compare the movement of matter with the movement of energy in trophic transfers.

Learning Objectives

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

Learning Objectives

• Recognize the concept of iteration in the design process
• Understand how test evidence guides design improvements
• Identify examples of refining a product through repeated testing+ Show more

Learning Objectives

• Explain how energy flows through trophic levels in an ecosystem
• Describe how producers convert external energy into chemical energy
• Justify why energy availability decreases at higher trophic levels due to losses+ Show more

Learning Objectives

• Analyze how waves, tides, and storm surge reshape shorelines using cross-shore profiles and shoreline retreat rates.
• Explain sediment transport and sediment budgets to describe how beach volume changes over time.
• Evaluate how sea-level change and human structures alter coastal morphology and habitats.

Learning Objectives

• Understand how air pollutants influence cellular health
• Identify major types of air pollutants and their sources
• Learn the biological mechanisms by which air pollution can cause cellular and health effects+ Show more

Learning Objectives

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

Learning Objectives

• Identify the main function of the nucleus and ribosomes in eukaryotic cells.
• Use passage details to explain how genetic information leads to protein assembly.
• Connect structure (nucleus, ribosome) to function (gene storage, protein building).

Learning Objectives

• Explain how organs are built from multiple tissue types to perform specific functions
• Describe how organ systems connect to support body processes such as gas exchange and nutrient transport
• Compare structural features of organs with how those structures help organisms function

Learning Objectives

• Explain how systems thinking and decision models support comparing mitigation and adaptation strategies under uncertainty.
• Use scenario analysis and integrated assessment ideas to evaluate trade-offs among greenhouse gas reduction, public health, and economic development.
• Apply cost-benefit reasoning and lifecycle thinking to compare policy instruments (e.g., carbon pricing, land-use planning, and infrastructure investment) across time and space.

Learning Objectives

• Understand how potential energy stored in water can be transformed into kinetic and electrical energy.
• Explain the energy transfer process in hydroelectric dams.
• Describe how gravitational potential energy converts to kinetic energy in falling water and skiers.+ Show more

Learning Objectives

• Understand different methods of soil conservation
• Identify the impact of soil conservation on land health
• Recognize human activities affecting land and water interactions+ Show more

Learning Objectives

• Explain how inherited traits are passed from parents to offspring through genetic transmission and gamete formation.
• Describe how meiosis creates allele combinations and increases genetic variation.
• Differentiate sources of genetic variation, including recombination and heritable mutations.

Learning Objectives

• Explain how carbon records from ice cores, marine sediments, and terrestrial proxies preserve evidence of past atmospheric composition and climate.
• Describe how isotopes, gas ratios, and carbon flux information can be used to identify seasonal cycles, abrupt shifts, and long-term trends.
• Compare natural variability shown in proxy records with recent anthropogenic increases using concepts of timing and magnitude.

Learning Objectives

• Explain how relative scale and perspective help describe distances and sizes in the solar system.
• Relate apparent sky motion and brightness to real orbital motion and distances.
• Use reasoning about scale to compare observations across planets.

Learning Objectives

• Describe lunar phases based on Earth–Moon–Sun geometry.
• Differentiate between solar and lunar eclipses, including partial, total, and annular types.
• Explain the conditions necessary for eclipses, such as node alignment and orbital inclination.+ Show more

Learning Objectives

• Understand the concept of iteration and how it is used to refine solutions.
• Identify the design cycle steps related to testing and improvement.
• Explain how reliability and safety margins increase through iterative testing.+ Show more

Learning Objectives

• Understand the regulatory mechanisms that coordinate metabolic pathways, including allosteric control, covalent modification, and compartmentalization.
• Explain feedback inhibition and hormonal signals that shift metabolic flux between catabolism and anabolism.
• Model how enzyme kinetics and substrate concentrations influence pathway rates.+ Show more

Learning Objectives

• Understand how to apply systems and decision models for evaluating mitigation and adaptation strategies.
• Analyze trade-offs among environmental, economic, and social variables using scenario analysis.
• Evaluate policy instruments such as carbon pricing and land-use planning in balancing resilience and sustainability.+ Show more

Learning Objectives

• Describe how observable properties can be used to identify and classify substances
• Differentiate between physical properties and changes that require chemical evidence
• Use vocabulary (e.g., colour, hardness, solubility, density, conductivity) to explain material behavior

Learning Objectives

• Explain how balanced and unbalanced forces affect an object’s motion and velocity.
• Use the idea of net force to predict changes in speed and direction.
• Relate the direction of net force to the direction of resulting acceleration.

Learning Objectives

• Understand the process of fertilization in animals and plants.
• Differentiate between internal and external fertilization strategies.
• Identify factors influencing successful development in various habitats.+ Show more

Learning Objectives

• Explain the conservation of mass principle for closed chemical systems
• Use atom conservation to interpret and predict mass changes in gas and combustion scenarios
• Apply mass conservation to account for reactants and products using balanced particle ideas

Learning Objectives

• Distinguish climate from short-term weather using evidence from atmospheric patterns
• Explain how latitude, distance from water, elevation, and atmospheric circulation influence temperature and precipitation
• Use climate controls to predict how ecosystems and surface processes respond to typical ranges of conditions

Learning Objectives

• Use quantitative measurements and model predictions to evaluate claims about motion, forces, energy transfer, or wave behavior.
• Identify how models summarize patterns and state the assumptions or constraints behind them.
• Compare competing explanations by how well they match data and follow expected relationships.

Learning Objectives

• Identify key variables in constant-acceleration motion equations
• Understand basic formulas relating displacement, velocity, acceleration, and time
• Apply motion equations to real-world scenarios such as vehicle stopping distances and free fall+ Show more

Learning Objectives

• Explain how empirical evidence supports scientific claims using observable, measurable data.
• Differentiate patterns in data from personal beliefs when making scientific conclusions.
• Evaluate whether evidence corroborates, refines, or challenges earlier interpretations.+ Show more

Learning Objectives

• Define electric current as the rate of charge flow and distinguish it from charge itself
• Use unit knowledge (amperes) to interpret typical current magnitudes in simple contexts
• Connect changes in current to changes in how fast charge moves through a circuit

Learning Objectives

• Explain how kinetic and potential energy can change within mechanical systems.
• Describe energy transfers due to work, collisions, and friction, and predict how motion changes.
• Use conservation of energy ideas to account for where mechanical energy goes when heat is produced.+ Show more

Learning Objectives

• Describe how energy moves through ecosystems from producers to consumers and decomposers.
• Explain the concept of energy transfer inefficiency and its impact on food chain length.
• Identify the roles of producers, herbivores, carnivores, and decomposers in an ecosystem.+ Show more

Learning Objectives

• Understand the principles of scaling laws and how they relate to real-world models.
• Explain the concept of dimensional similarity and its importance in scientific modeling.
• Apply proportional reasoning to interpret data across different spatial and temporal scales.+ Show more

Learning Objectives

• Describe the directional flow of energy through different trophic levels in an ecosystem.
• Explain the roles of producers and consumers in energy transfer.
• Identify reasons for energy loss at each trophic level and its effects on biomass.+ Show more

Learning Objectives

• Compare prokaryotic and eukaryotic cell structures, including organelles and chromosomes.
• Explain how the presence or absence of membrane-bound organelles affects cell functions.
• Use structural differences to predict differences in size, complexity, and metabolic capabilities.

Learning Objectives

• Understand the factors that influence the speed of chemical reactions.
• Identify how temperature, concentration, and catalysts affect reaction rates.
• Describe the concepts of rate laws, reaction order, and activation energy.+ Show more

Learning Objectives

• Understand the processes involved in nutrient cycling within ecosystems.
• Identify the roles of microbes and human activities in nutrient pathways.
• Analyze how alterations in nutrient fluxes affect ecosystem productivity and long-term nutrient availability.+ Show more

Learning Objectives

• Describe how to relate acceleration to velocity-time graphs for braking scenarios.
• Use net-force reasoning to connect forces to changes in motion.
• Apply the work-energy idea to predict how stopping distance changes with slope and friction.

Learning Objectives

• Explain how solar energy enters Earth's atmosphere
• Describe the processes by which Earth loses energy
• Identify the factors affecting Earth's surface temperatures+ Show more

Learning Objectives

• Identify different types of constraints relevant to engineering challenges.
• Analyze how social, environmental, and economic factors influence project planning.
• Participate in problem framing by prioritizing functional requirements and constraints.+ Show more

Learning Objectives

• Explain how incoming solar radiation and outgoing infrared radiation drive Earth’s energy cycle.
• Describe how energy moves among the atmosphere, hydrosphere, geosphere, and biosphere.
• Compare radiation, conduction, convection, and latent heat as mechanisms of energy transfer.+ Show more

Learning Objectives

• Understand how insulin and glucagon regulate blood glucose levels.
• Describe the role of pancreatic hormones in metabolic homeostasis.
• Explain the interplay between liver, muscle, and adipose tissues in glucose regulation.+ Show more

Learning Objectives

• Understand the difference between weather and climate.
• Identify factors that influence long-term climate patterns.
• Explain how latitude and atmospheric circulation affect climate.+ Show more

Learning Objectives

• Explain how Earth's axial tilt and orbital eccentricity influence seasons and climate patterns.
• Describe the lunar phases and their predictable cycle.
• Understand how gravitational forces between Earth, Moon, and Sun create tides.+ Show more

Learning Objectives

• Identify different lines of evidence supporting evolutionary history.
• Understand how fossil, anatomical, and molecular evidence contribute to the study of evolution.
• Analyze how multiple evidence types reinforce scientific conclusions about population changes over time.

Learning Objectives

• Define electric current, voltage, and resistance using correct SI units and symbols
• Compare typical magnitudes of current, voltage, and resistance in household and farm equipment contexts
• Use relationships between voltage, current, and resistance to interpret measurements and select appropriate components

Learning Objectives

• Determine genotypes and phenotypes from monohybrid Punnett squares
• Predict genotype and phenotype ratios for dihybrid crosses
• Interpret pedigrees to identify inheritance patterns and carrier genotypes+ Show more