Grade 9 Science Worksheets

Learning Objectives

• Explain the mechanisms of natural selection, including variation, inheritance, and selection pressures.
• Identify classic examples of natural selection, such as finch beak morphology and bacterial resistance.
• Describe how models of fitness and allele frequency determine different types of selection.+ Show more

Learning Objectives

• Understand the application of mathematical and computational methods in system modeling.
• Analyze how parameters and variables influence system performance.
• Develop and evaluate models using spreadsheets and simple code simulations.+ Show more

Learning Objectives

• Understand the tradeoffs involved in digital and analog communication systems.
• Analyze the impact of bandwidth constraints, signal-to-noise ratio, and sampling criteria on transmission quality.
• Evaluate error-correcting techniques and their effect on data integrity in noisy environments.+ Show more

Learning Objectives

• Understand how Earth's climate is influenced by various natural and external factors.
• Identify the roles of atmosphere, hydrosphere, cryosphere, lithosphere, and biosphere in climate systems.
• Explain the concept of energy balance and its significance in climate regulation.+ Show more

Learning Objectives

• Identify the three main types of chemical bonds: ionic, covalent, and metallic.
• Describe the electron arrangements involved in each bond type.
• Explain how bond types influence physical and chemical properties of substances.+ Show more

Learning Objectives

• Understand the principles of scaling laws and dimensional similarity.
• Apply proportional reasoning to construct models and interpret data across different scales.
• Analyze how nonlinearity and scale-dependent effects impact extrapolations in scientific contexts.+ Show more

Learning Objectives

• Interpret paleoclimate evidence from ice cores, tree rings, marine sediments, and speleothems using proxy indicators.
• Relate proxy records to past climate variability including glacial-interglacial cycles and abrupt events.
• Employ age models and quantify uncertainties to link proxy signals to climate forcing mechanisms.+ Show more

Learning Objectives

• Understand the concept of variability metrics and their application in data analysis.
• Identify various measures of variability such as range, variance, and standard deviation.
• Analyze data sets to calculate variability metrics and interpret their significance.+ Show more

Learning Objectives

• Define and distinguish between physical and chemical changes.
• Identify everyday examples of physical changes in various environments.
• Explain the reversibility of physical changes and how they conserve the identity of substances.+ Show more

Learning Objectives

• Describe how objects move using scalar and vector measures such as speed, velocity, and acceleration.
• Explain the differences between speed, velocity, and acceleration with real-world examples.
• Apply unit conversions and sign conventions to analyze and compare motion in different regional contexts.+ Show more

Learning Objectives

• Understand the concept of net force as the vector sum of forces acting on an object.
• Apply principles of vector addition to analyze forces in practical scenarios.
• Evaluate the effects of opposing forces such as friction and air resistance on motion.+ Show more

Learning Objectives

• Understand the geological processes involved in mountain formation, including crustal shortening, thickening, and metamorphism.
• Explain how isostatic adjustment influences mountain uplift and erosion patterns.
• Link plate convergence to changes in surface topography and regional climate effects.+ Show more

Learning Objectives

• Understand the concept of relative motion and how velocities combine in different reference frames.
• Describe how observed speed and direction depend on the observer's frame of reference.
• Apply vector addition principles to various motion scenarios involving boats, trucks, and aircraft.+ Show more

Learning Objectives

• Understand the concept of albedo feedback and its role in climate change.
• Identify factors that influence surface reflectivity and their effects.
• Analyze how changes in ice, snow, vegetation, and clouds contribute to climate feedbacks.+ Show more

Learning Objectives

• Understand the mechanisms that cause allele frequencies to change in populations such as selection, drift, migration, and mutation.
• Explain the Hardy-Weinberg equilibrium as a null model for population genetics.
• Describe how fitness landscapes, selection coefficients, and effective population size influence evolution.+ Show more

Learning Objectives

• Describe the mechanisms that drive different types of plate boundaries.
• Identify surface expressions associated with divergent, convergent, and transform margins.
• Analyze geologic evidence such as seafloor age patterns, paleomagnetic stripes, and seismic distributions to interpret plate motions.+ Show more

Learning Objectives

• Analyze different argument structures used in scientific reasoning.
• Identify premises and conclusions in argument-based texts.
• Evaluate the strength and validity of argument components.+ Show more

Learning Objectives

• Describe the processes involved in the rock cycle and how different rocks transform through geological mechanisms.
• Explain the role of tectonic settings such as mid-ocean ridges, subduction zones, and continental interiors in rock formation.
• Identify the physical and chemical processes that drive changes in rocks and their link to landscape evolution.+ Show more

Learning Objectives

• Explain how collision frequency, activation energy, and reaction pathways influence reaction rates.
• Describe how temperature, concentration, and catalysts alter energy distributions and affect reaction speeds.
• Interpret rate laws and determine reaction order from experimental data.+ Show more

Learning Objectives

• Describe the chemical structures of DNA and RNA and the role of nucleotides.
• Explain the significance of double helix formation, antiparallel strands, and base pairing in DNA.
• Differentiate between DNA and RNA in terms of structure and function.+ Show more

Learning Objectives

• Understand the sequence and causes of lunar phases.
• Identify the relationship between the Sun, Earth, and Moon in lunar cycles.
• Describe how lunar phases influence tides and nocturnal illumination.+ Show more

Learning Objectives

• Understand the construction principles of phylogenetic trees and their significance in evolutionary biology.
• Interpret branching diagrams to identify common ancestors and shared derived characters.
• Learn different methods of tree-building such as parsimony and molecular distance analyses.+ Show more

Learning Objectives

• Explain how the fossil record supports gradual change over time.
• Use anatomical and genetic evidence to support the idea of common ancestry.
• Differentiate homologous traits from analogous traits and relate them to evolutionary processes.+ Show more

Learning Objectives

• Analyze spatial and temporal climate datasets to identify trends and anomalies.
• Apply statistical trend analysis and composite mapping techniques.
• Interpret potential climate drivers by comparing datasets with external forcings.+ Show more

Learning Objectives

• Compare and evaluate different energy and mineral resource options.
• Analyze impacts of resource extraction methods on environment and society.
• Understand trade-offs related to resource management, sustainability, and lifecycle costs.+ Show more

Learning Objectives

• Explain the wave and photon descriptions of electromagnetic signals across the spectrum.
• Relate frequency to photon energy and their interactions with matter.
• Identify characteristic phenomena such as atomic emission and absorption lines, and spectral attenuation.+ 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 graph slopes and areas.
• Identify curved segments in graphs that indicate changing acceleration.+ Show more

Learning Objectives

• Describe the main sources of heritable genetic variation such as point mutations, chromosomal rearrangements, and recombination.
• Explain how mechanisms like crossing-over and independent assortment contribute to allelic and phenotypic diversity.
• Connect molecular changes to effects on gene expression, protein function, and trait variation at the population level.+ Show more

Learning Objectives

• Explain the process of seafloor spreading at mid-ocean ridges.
• Identify the evidence supporting episodic seafloor spreading rates.
• Describe how magnetic striping patterns provide evidence for oceanic crust formation.+ Show more

Learning Objectives

• Explain how energy is transferred among organisms in a food chain.
• Describe the concept of energy transfer efficiency and its impact on biomass.
• Interpret evidence like population sizes, biomass trends, and nutrient concentrations to analyze trophic levels.+ Show more

Learning Objectives

• Understand the basic concepts of forces, including contact and non-contact forces.
• Identify and describe real-world examples of forces in Alberta settings.
• Apply qualitative reasoning to analyze opposing forces before numerical calculation.+ Show more

Learning Objectives

• Explain power as the rate of energy transfer or work done over time
• Compare situations using the relationship between energy transferred and time
• Interpret everyday wattage ratings in terms of energy per second

Learning Objectives

• Understand how forces and energy interactions affect complex mechanical systems.
• Analyze net forces and predict system motion during collisions and assemblies.
• Evaluate energy transfers and dissipative forces within interconnected systems.+ Show more

Learning Objectives

• Explain how scientific knowledge changes through new evidence, improved measurement, and revised models
• Identify how evidence, models, and measurement work together to support scientific conclusions
• Evaluate the role of transparency about assumptions and limitations in scientific reasoning

Learning Objectives

• Explain the concept of centripetal force and its role in circular motion.
• Describe how speed and radius affect the acceleration in circular motion.
• Analyze the forces, such as tension and friction, that keep objects moving in a circular path.+ Show more

Learning Objectives

• Explain the concept of friction and how it opposes motion.
• Differentiate between static and kinetic friction.
• Describe factors influencing the magnitude of frictional force.+ Show more

Learning Objectives

• Understand the structure of evidence-based reasoning linking observations, analyses, and claims.
• Identify criteria for sufficiency, consistency, and alternative explanations in scientific reasoning.
• Use multiple representations—graphs, summaries, diagrams—to support inferences.+ Show more

Learning Objectives

• Describe the processes involved in energy transfer within the atmosphere and ocean.
• Interpret how differential heating influences circulation patterns and weather.
• Identify various energy fluxes using diagrams and tables, and relate them to climate indicators.

Learning Objectives

• Explain the formation and features of subduction zones.
• Describe the processes of slab dehydration and arc volcanism.
• Identify hazards associated with subduction zones, including earthquakes and tsunamis.+ Show more

Learning Objectives

• Explain the geological processes responsible for mountain formation, including plate convergence and continental collision.
• Identify the types of geological features produced by mountain building processes, such as fold-and-thrust belts.
• Describe the effects of weathering and erosion on mountain landscapes over time.+ Show more

Learning Objectives

• Define and explain the concepts of power and efficiency in mechanical systems.
• Describe how energy is transferred and how systems lose energy through heat, sound, or deformation.
• Analyze the significance of power and efficiency in real-world applications such as vehicles and lifting loads.+ Show more

Learning Objectives

• Understand the conditions that produce solar and lunar eclipses
• Recognize the orbital relationships among Sun, Earth, and Moon during eclipses
• Explain how orbital inclinations limit eclipse occurrences+ Show more

Learning Objectives

• Understand 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 various scenarios.+ Show more

Learning Objectives

• Explain how climate variability differs from short-term weather changes
• Describe how ocean-atmosphere interactions (El Niño and La Niña) can redistribute heat and moisture
• Analyze how long-term forcings can shift climate baselines using temperature and precipitation evidence+ Show more

Learning Objectives

• Describe the basic principles of Mendelian inheritance, including dominance, segregation, and independent assortment.
• Use Punnett squares to predict genotype and phenotype ratios of monohybrid and dihybrid crosses.
• Interpret pedigree charts to analyze inheritance patterns.+ Show more

Learning Objectives

• Understand the principles of mole ratios in balanced chemical equations.
• Apply molar mass conversions to relate mass and moles in reactions.
• Analyze limiting reagents and determine theoretical yields in chemical reactions.+ 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

• Explain the difference between an organism’s habitat and its ecological niche.
• Describe how resources, feeding relationships, and tolerance limits shape ecological niches.
• Analyze how competition and changing environmental conditions can reorganize communities.