Grade 9 Science Worksheets

Learning Objectives

• Understand the concept of phylogenetic trees and their purpose in illustrating evolutionary relationships.
• Interpret different types of phylogenetic trees, including rooted and unrooted trees.
• Identify monophyletic, paraphyletic, and polyphyletic groups within trees.+ Show more

Learning Objectives

• Understand the relationship between net force, mass, and acceleration as described by Newton's laws.
• Analyze free-body diagrams and force components in various motion scenarios.
• Apply proportionality between net force and acceleration to solve problems involving constant mass systems.+ 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 and their implications for Earth's composition and structure.
• Explain how density contrasts and mantle temperature gradients drive convective processes within Earth.+ Show more

Learning Objectives

• Understand different types of energy conversion devices and processes.
• Identify key examples of energy conversion such as photovoltaic cells, thermoelectric modules, and electrochemical cells.
• Analyze energy efficiency and account for losses during conversion.+ Show more

Learning Objectives

• Understand how molecular and cellular interactions influence organ system function.
• Link genetic variations to physiological responses and clinical outcomes.
• Interpret biochemical, histological, and organ performance data related to organism health.+ Show more

Learning Objectives

• Interpret paleoclimate evidence from various proxy indicators such as isotopic ratios, growth increments, and microfossil assemblages.
• Relate proxy records to past climate patterns including glacial-interglacial cycles and abrupt events.
• Employ age models and quantify uncertainty to link proxy signals to climate forcing mechanisms.+ Show more

Learning Objectives

• Describe how allele frequencies change under selection, drift, migration, and mutation.
• Explain the Hardy-Weinberg equilibrium as a null model for populations.
• Analyze the effects of bottlenecks and founder events on genetic variation.+ Show more

Learning Objectives

• Describe the molecular basis of photosynthetic light capture.
• Explain pigment absorption spectra and energy transfer among pigments.
• Discuss how reaction centers convert light energy into chemical energy.+ Show more

Learning Objectives

• Identify different lines of empirical evidence supporting evolution, including fossil, anatomical, and molecular data.
• Explain how comparative anatomy and genetic sequences provide evidence for common ancestry.
• Describe the significance of transitional fossils and biogeographic distributions in understanding evolution.+ Show more

Learning Objectives

• Understand how mechanical systems transfer energy through work, collisions, and friction.
• Explain how energy is gained or lost in motion and the transformation of energy into heat.
• Identify real-world examples illustrating energy conversion pathways and energy accounting.

Learning Objectives

• Understand the different types of natural hazards and their triggers.
• Analyze geologic and atmospheric indicators used to assess hazards.
• Interpret hazard maps, recurrence intervals, and paleoevidence to evaluate risks.+ Show more

Learning Objectives

• Explain the roles of producers and consumers in the ecosystem.
• Describe how photosynthesis and respiration transfer energy and cycle oxygen and carbon.
• Analyze the impact of net primary productivity and biomass on energy flow.+ Show more

Learning Objectives

• Analyze how land-use change, invasive species, pollution, and resource extraction affect biodiversity and ecosystems.
• Interpret empirical data from case studies such as deforestation and coral reef degradation.
• Evaluate trade-offs among conservation, ecosystem services, and socioecological outcomes.+ Show more

Learning Objectives

• Understand the mechanisms of gene expression regulation and signal transduction pathways.
• Identify key molecular components involved in intercellular communication.
• Analyze how mutations and pharmacological inhibitors affect cellular signaling and systemic functions.+ Show more

Learning Objectives

• Understand the hierarchical structure of biological classification systems.
• Identify key taxonomic ranks and their characteristics.
• Differentiate between traditional and modern classification approaches.+ Show more

Learning Objectives

• Define and differentiate among speed, velocity, and acceleration
• Apply unit conversions and sign conventions in motion analysis
• Describe real-world examples of kinematic measures in regional contexts+ Show more

Learning Objectives

• Understand the mechanisms that lead to new species formation, including reproductive isolation and genetic divergence.
• Identify and differentiate between allopatric and sympatric speciation models and their examples.
• Explain the significance of hybrid zones, polyploidy, and adaptive radiation in speciation.+ Show more

Learning Objectives

• Understand the origin and nature of Earth's magnetic field.
• Describe regional variation in magnetic declination and its implications.
• Explain how magnetic field measurements are used in geological and environmental monitoring.+ Show more

Learning Objectives

• Explain the process of natural selection and how heritable traits influence reproductive success.
• Distinguish between natural selection and artificial selection in shaping populations.
• Identify examples of adaptation in Alberta species such as prairie grass resilience and snowshoe hare camouflage.+ Show more

Learning Objectives

• Understand the composition and movement of Earth's tectonic plates.
• Identify the forces responsible for plate movements such as mantle convection, slab pull, and ridge push.
• Explain how plate interactions cause earthquakes, volcanoes, and mountain formations.+ Show more

Learning Objectives

• Describe the processes involved in the rock cycle, including melting, crystallization, weathering, transport, deposition, and metamorphism.
• Explain the physical and chemical mechanisms that drive transformations among igneous, sedimentary, and metamorphic rocks.
• Relate rock-forming processes to tectonic settings such as mid-ocean ridges, subduction zones, and continental interiors.+ Show more

Learning Objectives

• Understand the concepts of power, energy, and efficiency in technological systems.
• Calculate energy demand over time and assess system performance related to power output.
• Analyze energy loss and conversion efficiency in electrical systems.+ Show more

Learning Objectives

• Understand how wind and solar resources are integrated into the electrical grid.
• Identify challenges such as intermittency and balancing mechanisms.
• Analyze the environmental and economic implications of renewable energy sources.+ Show more

Learning Objectives

• Describe interactions among organisms and abiotic components that drive material cycling and energy flow in ecosystems.
• Explain the processes of carbon and nitrogen cycles, trophic transfer, and stoichiometric constraints.
• Analyze the impacts of perturbations such as nutrient enrichment, habitat alteration, and invasive species on ecosystem function.+ Show more

Learning Objectives

• Analyze the effects of human activities such as fossil fuel combustion, deforestation, and urbanization on climate variables.
• Interpret data trends from indicators like the Keeling Curve and vegetation loss satellites.
• Evaluate evidence linking emissions to regional and global ecosystem changes.+ Show more

Learning Objectives

• Understand the conventions for representing forces in free-body diagrams.
• Identify and label common forces such as weight, normal force, tension, and friction.
• Apply free-body diagrams to analyze situations involving equilibrium and acceleration.+ Show more

Learning Objectives

• Explain how enzymes act as biological catalysts and lower activation energy in metabolic reactions.
• Understand the role of enzyme structure and active sites in substrate specificity and catalysis.
• Describe the functions of cofactors and coenzymes in enzyme activity.+ Show more

Learning Objectives

• Understand how to interpret displacement–time, velocity–time, and acceleration–time graphs.
• Learn how the slope of a graph relates to physical quantities like speed and acceleration.
• Identify curved segments on graphs to recognize changing acceleration.+ Show more

Learning Objectives

• Understand that net force is the vector sum of all forces acting on an object.
• Describe how balanced and unbalanced forces affect motion.
• Solve problems involving resolving forces into components and calculating resulting acceleration.+ Show more

Learning Objectives

• Understand the mechanisms linking ocean surface temperatures and atmospheric variability.
• Identify phenomena such as ENSO and their impacts on regional and global climate patterns.
• Describe methods like time-series analysis and lag-correlation to study ocean-atmosphere interactions.+ Show more

Learning Objectives

• Identify and describe the different categories of chemical reactions.
• Recognize characteristic reactant patterns and products in various reactions.
• Classify reactions into synthesis, decomposition, displacement, and combustion based on their features.+ Show more

Learning Objectives

• Understand how electrical components exhibit characteristic behaviors such as resistance and nonlinear conduction.
• Identify real-world examples of electrical components and their behaviors.
• Analyze the effects of temperature and load changes on component performance.+ Show more

Learning Objectives

• Define chemical properties and identify examples in real substances.
• Describe how observations such as gas evolution and color change signify chemical reactions.
• Differentiate between physical and chemical changes based on reaction products.+ Show more

Learning Objectives

• Describe the main pathways involved in cellular respiration, including glycolysis, the citric acid cycle, and electron transport chain.
• Explain how substrate-level and oxidative phosphorylation contribute to ATP production.
• Compare aerobic and anaerobic respiration in terms of ATP yield and metabolic outcomes.+ Show more

Learning Objectives

• Differentiate between heterogeneous mixtures and homogeneous solutions.
• Identify key components such as solute and solvent in a mixture.
• Understand how concentration affects the appearance and behavior of solutions.+ Show more

Learning Objectives

• Understand how feedback loops, redundancy, and cross-regulation contribute to multi-system coordination.
• Describe how exercise affects respiratory, cardiovascular, and metabolic responses via neural, hormonal, and local signals.
• Explain the impact of disruptions in one organ system on overall homeostasis and health outcomes.+ Show more

Learning Objectives

• Understand the process of speciation and how it contributes to biodiversity.
• Identify different reproductive barriers and mechanisms involved in speciation.
• Differentiate between allopatric and sympatric speciation and their causes.+ Show more

Learning Objectives

• Interpret position–time and velocity–time graphs to describe motion.
• Understand the significance of slopes and areas under graphs in kinematics.
• Link graphical representations to algebraic formulas of velocity and acceleration.+ Show more

Learning Objectives

• Explain the role of simple computational simulations and numerical models in generating predictions.
• Identify how parameters influence simulation outcomes and the importance of scenario comparison.
• Describe how ensembles and visualizations represent forecast uncertainty.+ Show more

Learning Objectives

• Describe the main processes involved in energy transfer within the atmosphere and oceans.
• Interpret diagrams and tables illustrating the global energy budget and fluxes.
• Explain how differential heating influences atmospheric circulation and climate patterns.+ Show more

Learning Objectives

• Understand how greenhouse gases trap outgoing radiation and influence Earth's surface temperature.
• Identify natural and human sources of greenhouse gases and their effects on climate.
• Explain how small changes in atmospheric composition can alter the energy balance and climate responses.+ Show more

Learning Objectives

• Explain Newton's First Law as a statement about inertia and its relationship with external forces.
• Distinguish between rest and constant velocity states of motion.
• Describe how balanced forces contribute to static and dynamic equilibrium.+ Show more

Learning Objectives

• Understand the differences between series and parallel circuits.
• Identify how current and voltage behave in different circuit arrangements.
• Recognize real-world examples of series and parallel circuits.+ Show more

Learning Objectives

• Understand the principles of mechanical energy conservation in ideal systems.
• Identify conditions under which total mechanical energy remains constant.
• Explore the role of non-conservative work, such as friction, in energy dissipation.+ Show more

Learning Objectives

• Identify the organization of tissues within organs.
• Understand how organs and systems collaborate to sustain the organism.
• Describe the relationship between tissue types, organs, and organ systems.+ Show more

Learning Objectives

• Describe the biochemical pathways involved in cellular respiration, including glycolysis, the citric acid cycle, and electron transport.
• Explain how ATP is produced through energy coupling in cells.
• Relate mitochondrial and chloroplast functions to metabolic processes like respiration and photosynthesis.+ Show more

Learning Objectives

• Understand key observational evidence used to determine the age and expansion of the universe.
• Explain the significance of redshift surveys, Hubble's law, and cosmic microwave background measurements.
• Analyze how primordial element abundances help constrain cosmic history.+ Show more

Learning Objectives

• Explain how insulin and glucagon regulate blood glucose levels.
• Identify the roles of liver, muscle, and adipose tissues in glucose metabolism.
• Describe endocrine feedback loops involved in glucose homeostasis.+ Show more