Grade 9 Science Worksheets

Learning Objectives

• Understand the concepts of center of mass and how it affects the stability of rigid bodies.
• Calculate the center of mass for composite systems and analyze their stability.
• Apply torque and equilibrium conditions to determine tipping thresholds for structures.+ Show more

Learning Objectives

• Understand the flow of energy through trophic levels in an ecosystem
• Identify the structure and components of food webs
• Describe concepts of biomass distribution, production-to-biomass ratios, and ecological efficiency+ Show more

Learning Objectives

• Understand the different types of eclipses and how they occur
• Identify the celestial bodies involved in solar and lunar eclipses
• Explain the role of orbital inclination and paths of totality in eclipse visibility+ Show more

Learning Objectives

• Understand energy transfer across trophic levels in ecosystems.
• Identify the structure and function of food webs and trophic pyramids.
• Explain ecological efficiency and biomass distribution in different ecosystems.+ Show more

Learning Objectives

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

Learning Objectives

• Understand the roles of producers and consumers in ecosystems.
• Analyze how photosynthesis and cellular respiration transfer energy and cycle carbon and oxygen.
• Evaluate the impact of net primary productivity and biomass accumulation in autotrophs.+ Show more

Learning Objectives

• Understand the factors that influence population size and dynamics.
• Explore models such as logistic growth and predator-prey cycles.
• Analyze empirical data from fisheries and wildlife management.+ Show more

Learning Objectives

• Describe the processes involved in nutrient cycling, including microbial decomposition, fixation, mineralization, and sedimentation.
• Explain how human activities such as fertilizer runoff impact nutrient fluxes and ecosystem health.
• Analyze mass-balance considerations and how alterations in cycling rates affect ecosystems.+ Show more

Learning Objectives

• Understand the principles of allele frequency and Hardy-Weinberg equilibrium.
• Explain the effects of genetic drift, bottlenecks, and founder effects on genetic diversity.
• Analyze how gene flow, selection, and stochastic processes influence evolution and conservation.+ Show more

Learning Objectives

• Explain Mendelian inheritance patterns including dominant and recessive alleles.
• Distinguish between genotype and phenotype in genetic traits.
• Use Punnett squares to predict inheritance ratios for single-gene traits.+ Show more

Learning Objectives

• Understand the ecological, economic, and health risks and benefits associated with genetic technologies.
• Evaluate potential consequences such as gene flow, resistance development, and market impacts.
• Analyze therapeutic opportunities and the importance of risk assessment and mitigation strategies.+ Show more

Learning Objectives

• Understand the concept of natural selection and how it influences adaptation in populations.
• Identify examples of selective pressure and adaptive trade-offs in Alberta ecosystems.
• Differentiate between natural selection and artificial selection in shaping species traits.+ Show more

Learning Objectives

• Explain the principle of conservation of mass in closed systems during chemical reactions.
• Identify examples where mass remains constant despite apparent changes.
• Distinguish between gas exchange effects and true mass conservation in experiments.+ Show more

Learning Objectives

• Describe the mechanisms linking oceanic and atmospheric variability in climate systems.
• Explain phenomena such as ENSO and how sea surface temperature anomalies influence global weather patterns.
• Analyze time-series data, lag-correlation maps, and energy-budget perspectives related to ocean–atmosphere interactions.+ Show more

Learning Objectives

• Explain the processes of coastal erosion, sediment transport, and shoreline response to various natural forces.
• Analyze how sea-level change influences coastal morphology and habitats.
• Evaluate quantitative indicators such as shoreline retreat rates and beach volume changes.+ Show more

Learning Objectives

• Quantify surface and subsurface water flows using water-budget frameworks, hydrographs, and groundwater level records.
• Relate precipitation inputs, evapotranspiration, and human withdrawals to streamflow variability and aquifer sustainability.
• Analyze how altered hydrologic fluxes impact geomorphic responses such as channel adjustments and sediment yield.+ Show more

Learning Objectives

• Understand the components and interactions within coupled environmental models.
• Identify key parameters and sensitivities in integrated models.
• Evaluate how uncertainties propagate through complex environmental scenarios.+ Show more

Learning Objectives

• Analyze human activities affecting natural resources using quantifiable indicators.
• Interpret resource trends considering natural variability and system thresholds.
• Assess sustainability implications through comparative datasets and ratio-based measures.+ Show more

Learning Objectives

• Explain the mechanisms behind the three main types of plate boundaries: divergent, convergent, and transform.
• Identify surface expressions and characteristic features associated with each boundary type.
• Analyze geologic evidence such as seafloor age patterns, paleomagnetic stripes, and earthquake distribution to interpret plate movements.+ Show more

Learning Objectives

• Describe the processes involved in the transformation of igneous, sedimentary, and metamorphic rocks.
• Explain the physical and chemical mechanisms driving changes in rock types within various tectonic settings.
• Connect petrologic evidence and diagrams to the understanding of landscape evolution and resource distribution.+ Show more

Learning Objectives

• Describe interactions among geosphere, hydrosphere, atmosphere, and biosphere using models and diagrams.
• Analyze material and energy exchanges such as nutrient transport, gas fluxes, and ocean upwelling effects.
• Use spatial schematics, mass-balance thinking, and causal chains to interpret environmental phenomena.+ Show more

Learning Objectives

• Explain the different magmatic systems and their influence on volcanic eruptive styles.
• Describe how volcanic gas emissions are linked to magma composition and tectonic setting.
• Contrast effusive shield volcanism with explosive stratovolcano behavior based on magma viscosity and volatile content.+ Show more

Learning Objectives

• Analyze spatial and temporal climate datasets to identify trends and anomalies.
• Understand the application of statistical trend analysis and composite mapping in climate science.
• Interpret potential climate drivers by comparing datasets with external forcings such as greenhouse gases and volcanic aerosols.+ Show more

Learning Objectives

• Describe the geologic processes involved in mountain building, including crustal shortening and isostatic adjustment.
• Explain how structural cross sections, uplift rate estimates, and thermochronology contribute to understanding mountain formation.
• Analyze the influence of mountain-building episodes on regional climate, erosion, and sediment delivery.

Learning Objectives

• Identify various types of graphical representations used in data analysis.
• Construct accurate and effective graphs such as scatterplots, histograms, and line graphs.
• Interpret visual patterns, outliers, and trends in data visualizations.+ Show more

Learning Objectives

• Understand 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 internal composition.
• Explain how temperature gradients and density contrasts drive mantle convection and material cycling.+ Show more

Learning Objectives

• Identify and describe the subatomic particles within an atom.
• Explain how protons, neutrons, and electrons determine an atom's properties.
• Understand the concept of isotopes and their effect on atomic stability.+ Show more

Learning Objectives

• Explain how computational models use assumptions, variables, and parameters to predict system behavior.
• Use algebraic performance objective functions to compare design scenarios and justify parameter choices.
• Describe and interpret results from sensitivity analysis to understand how outputs change with inputs.

Learning Objectives

• Explain how the Moon, Sun, and Earth’s orbital motion produce tidal forces
• Describe how spring and neap tides form from the relative alignment of the Moon and Sun
• Analyze how local ocean depth and coastline geometry can change tidal range and current strength+ Show more

Learning Objectives

• Explain how bulk material structures relate to the arrangement of particles.
• Differentiate between ionic lattices, covalent networks, and molecular solids based on their properties.
• Interpret observations of melting point, electrical conductivity, hardness, and solubility to determine lattice organization.+ Show more

Learning Objectives

• Interpret earthquake waveforms and travel-time curves to infer subsurface structures.
• Compare P- and S-wave arrivals, waveform amplitudes, and frequency content to distinguish earthquake depths and locations.
• Connect seismic activity patterns to tectonic environments and surface hazard phenomena such as tsunamis.+ Show more

Learning Objectives

• Understand how gene expression is controlled through regulatory mechanisms.
• Describe the roles of promoters, enhancers, silencers, transcription factors, and repressors.
• Explain epigenetic modifications and their impact on chromatin accessibility and transcription.+ Show more

Learning Objectives

• Understand the process of photosynthesis and its components.
• Identify inputs, outputs, and the steps involved in photosynthesis.
• Explain the role of chloroplasts, pigments, and electron transport in capturing light energy.+ Show more

Learning Objectives

• Understand the concepts of impulse, force, and energy dissipation in collision scenarios.
• Analyze force‑time graphs to evaluate impact mitigation methods such as crumple zones and airbags.
• Describe how materials deform and dissipate energy during collisions to reduce peak forces.+ Show more

Learning Objectives

• Explain how sex chromosomes (X and Y) influence inheritance of certain traits.
• Distinguish X-linked recessive traits from other inheritance patterns using hemizygosity in males.
• Describe how dosage compensation affects gene expression across sexes.+ Show more

Learning Objectives

• Understand the core principles of population genetics, including allele frequency and genetic drift.
• Describe the assumptions of Hardy-Weinberg equilibrium and factors that disrupt it.
• Explain the effects of bottlenecks, founder effects, and gene flow on genetic diversity.+ Show more

Learning Objectives

• Explain how magma composition, temperature, viscosity, and volatile content control eruptive styles.
• Compare effusive shield volcanism and explosive stratovolcano behavior using evidence such as gas emissions and eruption deposits.
• Interpret tectonic settings and petrologic indicators to connect volcanic activity with landscape and atmospheric change.

Learning Objectives

• Understand the concept of energy changes during chemical reactions, including endothermic and exothermic processes.
• Interpret energy diagrams to relate molecular interactions to observable temperature and phase changes.
• Identify and describe the role of bond breaking and formation in energy changes.+ Show more

Learning Objectives

• Explain the structure of ATP and how its components relate to storing usable cellular energy.
• Describe how ATP hydrolysis releases energy and how that energy powers cellular work.
• Compare ATP regeneration by phosphorylation with ATP breakdown, focusing on energy transfer.+ Show more

Learning Objectives

• Describe how energy flows through ecosystems from primary producers to consumers and decomposers.
• Explain the process of photosynthesis and its role in energy transfer.
• Identify different trophic levels and understand the energy loss at each level.+ Show more

Learning Objectives

• Explain the process of ecological succession and its different types.
• Identify factors influencing succession trajectories in ecosystems.
• Model succession incorporating species traits, dispersal, and environmental constraints.+ Show more

Learning Objectives

• Understand how human activities affect biodiversity and ecosystem services.
• Identify different types of human impacts on habitats and species.
• Evaluate the consequences of habitat fragmentation, pollution, and resource extraction.+ Show more

Learning Objectives

• Understand the components of trophic structure including producers, consumers, and decomposers.
• Explain how food chains and food webs illustrate energy flow within ecosystems.
• Describe the concepts of trophic efficiency and trophic cascades and their effects on ecosystems.+ Show more

Learning Objectives

• Explain how different species interact within a community and the effects on ecosystem stability.
• Identify and describe various types of species interactions such as competition, predation, and mutualism.
• Understand the roles of keystone species and ecosystem engineers in shaping community structure.+ Show more

Learning Objectives

• Explain the concepts of resilience and resistance in ecosystems.
• Identify factors that influence ecosystem recovery and stability.
• Describe ecological thresholds and regime shifts.+ Show more

Learning Objectives

• Define ecosystem services and their categories: provisioning, regulating, cultural, and supporting.
• Explain the role of biodiversity in ecosystem service provision, such as pollination and water purification.
• Evaluate how human activities like land-use change and pollution impact ecosystem services.+ Show more

Learning Objectives

• Understand the processes involved in nutrient cycling, including biological and physical mechanisms.
• Identify the roles of nitrogen and phosphorus in ecosystems.
• Explain how human activities influence nutrient flow and ecosystem health.+ Show more

Learning Objectives

• Explain the key concepts and factors affecting population growth and decline.
• Analyze how density-dependent and density-independent factors influence populations.
• Describe species interactions and their effects on community structure.+ Show more