Grade 9 Science Worksheets

Learning Objectives

• Explain how light energy is converted into chemical energy during the light reactions of photosynthesis.
• Describe the roles of thylakoid membranes, photosystems, and electron carriers in photochemistry.
• Relate electron flow to proton gradient formation and ATP synthase activity.+ Show more

Learning Objectives

• Explain how kinematic descriptions, force balances, and energy considerations integrate to analyze complex motion scenarios.
• Apply graphs, equations, and net-force reasoning to predict motion outcomes in transport contexts.
• Interpret combined physical principles in real-world Alberta transportation and recreational situations.

Learning Objectives

• Describe how fossil records provide evidence of past life and evolution.
• Identify key methods used to date fossils and determine their ages.
• Explain how taphonomy and preservation bias affect the fossil record.+ Show more

Learning Objectives

• Understand the structure and function of neuroendocrine pathways in the body.
• Explain how the hypothalamus and pituitary gland coordinate hormonal responses.
• Identify key anatomical features that support neuroendocrine regulation.+ Show more

Learning Objectives

• Understand the concept of mechanical advantage and how it is calculated.
• Identify different types of machines that utilize mechanical advantage.
• Analyze the trade-offs between force reduction and displacement in pulley and lever systems.+ Show more

Learning Objectives

• Explain how oceanic lithosphere subducts and why deep trenches and volcanic arcs form
• Describe how slab dehydration influences melting and arc volcanism
• Relate megathrust earthquakes to tsunamis at subduction interfaces+ Show more

Learning Objectives

• Identify dominant and recessive traits in Punnett squares
• Understand Mendel's laws of segregation and independent assortment
• Analyze genetic crosses to predict genotype and phenotype ratios+ Show more

Learning Objectives

• Understand the difference between power and energy in system analysis.
• Calculate energy demand over time considering efficiency and system losses.
• Compare the power ratings of household appliances and their impact on energy consumption.+ Show more

Learning Objectives

• Understand the factors that influence population sizes and dynamics.
• Explain models such as logistic growth and predator-prey cycles.
• Analyze the impact of human activity on population regulation and resilience.+ Show more

Learning Objectives

• Understand the flow of energy through different trophic levels in an ecosystem.
• Analyze and interpret food web structures including biomass distribution and ecological efficiency.
• Evaluate predator-prey relationships and the concepts of top-down and bottom-up control.+ Show more

Learning Objectives

• Understand how land-use change, invasive species, pollution, and resource extraction impact biodiversity and ecosystems.
• Analyze case studies such as deforestation, coral reef degradation, and agricultural runoff to evaluate environmental impacts.
• Interpret empirical data to assess trade-offs between conservation efforts and socioecological outcomes.+ Show more

Learning Objectives

• Understand the roles of producers and consumers in ecosystems.
• Explain the processes of photosynthesis and cellular respiration.
• Analyze how energy flows through food webs and affects biomass.+ Show more

Learning Objectives

• Understand the principles of Mendelian genetics, including dominant and recessive inheritance
• Identify different inheritance patterns such as incomplete dominance and codominance
• Recognize the role of non-Mendelian patterns in phenotypic variation+ Show more

Learning Objectives

• Understand how impulse and force-time tradeoffs are used in engineering design to reduce collision impacts.
• Identify materials and structures used in safety features such as crumple zones, airbags, helmets, and padding.
• Analyze force‑time graphs to evaluate the effectiveness of different collision mitigation strategies.+ Show more

Learning Objectives

• Explain how impulse relates to change in momentum, including the role of net force and time interval
• Use the idea of impulse to predict how different force–time combinations can produce the same momentum change
• Determine how direction affects impulse and momentum change+ Show more

Learning Objectives

• Describe the differences between catabolic and anabolic pathways.
• Explain how energy is harvested or stored during metabolic reactions.
• Identify mechanisms regulating pathway activity such as feedback inhibition and substrate availability.+ Show more

Learning Objectives

• Understand how organelle structures vary among different cell types and taxa.
• Relate cellular morphology to specialized functions and ecological strategies.

Learning Objectives

• Understand how the body maintains internal temperature through thermoregulation.
• Identify key mechanisms such as sweating, shivering, and blood flow adjustments.
• Explain the role of the hypothalamus in temperature regulation.+ Show more

Learning Objectives

• Understand construction and critique of scientific arguments using claim-evidence-reasoning structures.
• Identify coherence, relevance, and consideration of alternative explanations in scientific arguments.
• Evaluate how quantitative evidence and model comparisons strengthen arguments.+ Show more

Learning Objectives

• Understand the basic types of simple machines and their roles in modifying force and displacement.
• Explain the concepts of mechanical advantage, including ideal mechanical advantage and real-world constraints.
• Identify and compare different simple machines such as levers, pulleys, inclined planes, wedges, wheels and axles, and screws.+ Show more

Learning Objectives

• Understand how blood glucose levels fluctuate after eating.
• Identify hormones involved in glucose regulation.
• Describe the negative feedback mechanism maintaining energy balance.

Learning Objectives

• Explain the key drivers of climate change including greenhouse gases, albedo effect, and aerosols.
• Describe the basic concepts of radiative transfer and Earth's energy budget.
• Analyze human influence on the carbon cycle and climate projections.+ Show more

Learning Objectives

• Understand how cellular organization supports functions within various tissues.
• Identify different tissue types and their microscopic features.
• Explain the roles of epithelial, connective, muscle, and nervous tissues in organ systems.+ Show more

Learning Objectives

• Describe how the hypothalamus interfaces with the pituitary gland to regulate hormones.
• Identify anatomical features supporting neuroendocrine signaling.
• Explain how hormonal responses influence metabolism, growth, and stress.+ Show more

Learning Objectives

• Describe how hormonal feedback regulates blood glucose levels.
• Explain the roles of insulin and glucagon in maintaining energy balance.
• Identify the effects of insulin and glucagon on liver and muscle tissues.+ Show more

Learning Objectives

• Understand the components and functions of homeostatic feedback loops.
• Distinguish between negative and positive feedback mechanisms.
• Identify the signaling pathways and transport processes involved in feedback loops.+ Show more

Learning Objectives

• Describe the major organ systems and their functions.
• Explain how organ systems collaborate to maintain physiological stability.
• Identify cross-system communication mechanisms involved in homeostasis.+ Show more

Learning Objectives

• Describe the processes of glomerular filtration, tubular reabsorption, and secretion in the kidneys.
• Explain how hormones like antidiuretic hormone and the renin-angiotensin-aldosterone system regulate fluid and electrolyte balance.
• Understand the mechanisms the body uses to maintain blood pressure and osmolarity through renal control.

Learning Objectives

• Describe how receptor proteins bind ligands to initiate cell signaling.
• Identify different types of cell signaling pathways and their functions.
• Explain how signal transduction pathways alter cellular responses like gene expression and metabolism.+ Show more

Learning Objectives

• Understand how the cardiovascular and respiratory systems work together to deliver oxygen and remove carbon dioxide.
• Identify the roles of chemoreceptors in regulating breathing and circulation.
• Describe the physiological responses to changes in blood gas levels.+ Show more

Learning Objectives

• Describe passive and active processes of molecular transport across membranes.
• Explain the role of various transport mechanisms in maintaining cellular homeostasis.
• Identify examples of vesicular transport such as endocytosis and exocytosis.+ Show more

Learning Objectives

• Identify dominant and recessive phenotypes from a simple inheritance cross.
• Explain how a monohybrid cross produces a predictable phenotypic ratio.
• Use evidence from genotype to infer expected outcomes in offspring.

Learning Objectives

• Identify major organelles of eukaryotic cells and their functions.
• Explain how structural features like membrane folding and compartmentalization influence cell activity.
• Relate the features of cell components to their specific roles in metabolism and exchange processes.+ Show more

Learning Objectives

• Understand how DNA, RNA, and protein sequences are compared to infer evolutionary relationships.
• Identify the significance of homologous genes and conserved sequences in evolutionary history.
• Describe how sequence divergence rates serve as molecular clocks to estimate divergence times.+ Show more

Learning Objectives

• Understand the geometric relationship between the Sun, Earth, and Moon during different lunar phases.
• Describe the cycle of lunar phases and what causes the sequence from new to full and back.
• Explain how lunar phases influence nocturnal illumination and tides.+ Show more

Learning Objectives

• Explain how births, deaths, immigration, and emigration affect population size over time
• Distinguish density-dependent and density-independent factors and predict their effects on growth
• Describe how carrying capacity shapes population trajectories and community interactions

Learning Objectives

• Explain the gravitational interactions that cause tidal forces among the Moon, Sun, and Earth.
• Identify the conditions that lead to spring and neap tides.
• Describe how local geographic features can influence tidal amplitudes.+ Show more

Learning Objectives

• Understand how land-use change, invasive species, pollution, and resource extraction impact biodiversity and ecosystems.
• Interpret empirical data from case studies like deforestation and coral reef degradation to evaluate ecological consequences.
• Assess trade-offs among conservation efforts, provisioning services, and socioecological outcomes.+ Show more

Learning Objectives

• Explain the factors that influence population growth and size, including carrying capacity, predation, competition, and resource availability.
• Analyze mathematical models such as logistic growth and predator-prey cycles to understand population dynamics.
• Evaluate the impact of human activities on natural populations and discuss conservation strategies related to population regulation.

Learning Objectives

• Understand the key processes involved in nutrient cycling within ecosystems, including microbial decomposition, fixation, mineralization, and sedimentation.
• Explain how human activities, such as fertilizer runoff, disrupt nutrient cycles and lead to phenomena like eutrophication.
• Analyze the role of reservoirs and fluxes in nutrient cycling and how alterations affect primary productivity and long-term ecosystem health.+ Show more

Learning Objectives

• Explain the roles of producers and consumers in energy transfer within ecosystems.
• Analyze how photosynthesis and cellular respiration impact carbon and oxygen cycling.
• Evaluate factors that affect net primary productivity and biomass accumulation.+ Show more

Learning Objectives

• Describe the flow of energy through different trophic levels in an ecosystem.
• Explain the structure and function of food webs and trophic pyramids.
• Analyze how energy transfer efficiency affects biomass distribution and ecosystem productivity.+ Show more

Learning Objectives

• Analyze how resource extraction affects landforms, ecosystems, and material cycles.
• Identify environmental effects of mining, fossil fuel extraction, and water use.
• Evaluate sustainability criteria such as resource renewal, environmental effects, and reclamation.+ Show more

Learning Objectives

• Understand how surface currents are generated and their role in redistributing heat.
• Identify key features of ocean circulation such as gyres, upwelling zones, and boundary currents.
• Explain how ocean circulation influences regional climates and interacts with atmospheric systems.

Learning Objectives

• Explain the processes of seafloor spreading, subduction zones, and volcanic arc systems.
• Describe how mantle convection connects to surface features like mountain belts and ocean basins.
• Identify evidence such as seafloor magnetic anomalies and geologic cross-sections that support plate tectonics.+ Show more

Learning Objectives

• Understand the basic concepts of force and motion.
• Identify different types of forces such as contact and field forces.
• Interpret free-body diagrams and apply Newton's second law.+ Show more

Learning Objectives

• Understand the distinction between power, energy, and system efficiency in technological systems.
• Calculate energy demand over time using power ratings and operational durations.
• Assess the impact of conversion losses and system inefficiencies on overall energy throughput.+ Show more

Learning Objectives

• Understand the interactions between land use, water management, and ecosystem health.
• Identify indicators of soil and water ecosystem resilience.
• Evaluate sustainable agriculture practices and their trade-offs.+ Show more