Grade 9 Worksheets

Learning Objectives

• Understand the principles of conservation of mechanical energy in ideal systems.
• Identify how non-conservative forces affect energy transfer and dissipation.
• Analyze height–speed relationships in roller-coaster models under gravity.+ Show more

Learning Objectives

• Understand the principles of mechanical energy conservation and energy transfers.
• Identify and describe real-world examples of energy conversions in Alberta contexts.
• Analyze the effects of non-conservative forces like friction on energy transfer.+ Show more

Learning Objectives

• Understand the hormonal feedback mechanisms involved in glucose regulation.
• Describe how insulin and glucagon maintain blood glucose levels.
• Explain the process of glycogenolysis and gluconeogenesis in energy balance.+ Show more

Learning Objectives

• Determine how a text’s central idea is built through connected events, explanations, and specific details.
• Distinguish what is explicitly stated from what is implied in a passage.
• Explain how key moments contribute to coherence and how the text’s information develops over time.

Learning Objectives

• Understand the relationship between the Sun, Earth, and Moon in creating lunar phases.
• Describe the sequence of lunar phases and what causes their appearance.
• Explain how lunar phases influence tides and nocturnal illumination.+ Show more

Learning Objectives

• Explain how DNA stores genetic information and how genes organize that information
• Describe how chromosomes carry genes and how chromosomes are passed to offspring during cell division
• Connect changes in genetic material to differences among individuals

Learning Objectives

• Explain how meiosis produces genetically different gametes.
• Describe how crossing over and independent assortment increase genetic variation.
• Connect meiosis variation to differences observed among siblings after fertilization.

Learning Objectives

• Understand the derivation and form of constant-acceleration kinematic equations.
• Apply kinematic equations to solve problems involving vertical free-fall and projectile motion.
• Interpret sign conventions and component-wise treatment in motion analysis.+ Show more

Learning Objectives

• Understand Newton's three laws of motion and their applications.
• Explain how forces affect the motion of objects in real-world contexts.
• Analyze and interpret motion patterns using Newtonian principles.+ Show more

Learning Objectives

• Revise sentences to correct grammar and usage errors, including subject-verb agreement and tense consistency.
• Apply punctuation rules to clarify relationships between ideas and clauses.
• Choose correct word forms to maintain precise meaning and reduce distraction.

Learning Objectives

• Understand the principle of conservation of mass during chemical reactions.
• Interpret balanced chemical equations to reflect mass conservation.
• Link measurable mass changes to molecular rearrangements in reactions.+ Show more

Learning Objectives

• Explain how quantitative measurements constrain scientific claims and models.
• Use model predictions to evaluate competing explanations for motion, forces, energy transfer, or wave behavior.
• Identify and justify assumptions in scientific models and describe how evidence supports them.

Learning Objectives

• Explain how conservation of matter applies to chemical reactions and balanced equations.
• Use atom counting to balance simple chemical equations with correct coefficients.
• Interpret coefficients as particle ratios while keeping subscripts unchanged.

Learning Objectives

• Explain how predation, competition, and mutualism connect species in an ecosystem network
• Analyze how environmental factors (water, temperature, nutrients) influence survival, growth, and population sizes
• Describe how changes in one species or resource can cascade through interaction networks and affect stability

Learning Objectives

• Explain how disturbances can change ecosystem stability through altered species interactions and environmental conditions
• Describe how resilience, recovery rate, and ecological thresholds influence whether an ecosystem returns to its prior state
• Use long-term population and community data to distinguish gradual change from rapid ecosystem shifts+ Show more

Learning Objectives

• Explain how alleles form genotypes and how genotypes determine phenotypes using dominant and recessive relationships
• Use genotype–phenotype reasoning to predict inheritance outcomes across generations
• Interpret heredity evidence (such as ratios and pedigrees) to support conclusions about dominant vs. recessive traits

Learning Objectives

• Explain how allele combinations in parents determine the possible genotypes of offspring
• Use probability to predict the expected proportions of phenotypes across multiple generations
• Interpret dominance and recessiveness to understand how recessive traits may be hidden

Learning Objectives

• Explain how cellular structures (nucleus, mitochondria, membranes) support specific functions
• Describe how organism-level structures (bones, muscles, plant tissues, skin) reflect their biological roles
• Use model-based reasoning to link a structure’s physical properties to what it does+ Show more

Learning Objectives

• Explain how Earth’s water cycle moves matter and energy among reservoirs such as oceans, clouds, land, groundwater, and ice
• Describe how carbon moves among the atmosphere, living things, oceans, and rocks through processes like photosynthesis and respiration
• Connect incoming solar radiation and outgoing Earth radiation balance to temperature and weather patterns

Learning Objectives

• Explain how constraints limit design options and how criteria define success in engineering choices.
• Analyze trade-offs among cost, time, materials, safety, and reliability when comparing design alternatives.
• Justify a design decision by connecting performance goals to the weight given to criteria under given constraints.

Learning Objectives

• Explain how scientific arguments connect evidence to reasoning when evaluating a claim.
• Use patterns in data to justify whether a proposed explanation is supported or weakened by measurements.
• Identify how uncertainty, incomplete data, and possible bias affect confidence in scientific claims.+ Show more

Learning Objectives

• Identify the independent, dependent, and controlled variables in a science investigation.
• Design an investigation by choosing controls, safety conditions, and an accurate measurement procedure.
• Explain how controlling variables supports valid conclusions from results.

Learning Objectives

• Explain what uncertainty in a graph represents and why it matters for interpreting data.
• Interpret error bars or uncertainty bands to judge whether differences between conditions are meaningful.
• Use overlap (or lack of overlap) of uncertainty ranges to support or question claims about trends.

Learning Objectives

• Understand the structure of evidence-based reasoning linking observations, analyses, and claims.
• Describe standards for evidence sufficiency, consistency, and evaluation of competing explanations.
• Learn to use multiple representations—graphs, summaries, diagrams—to support inferences.+ Show more

Learning Objectives

• Describe the fundamental principles of cell theory.
• Differentiate between unicellular and multicellular organisms.
• Explain the differences between prokaryotic and eukaryotic cells.+ Show more

Learning Objectives

• Describe the different types of seismic waves and their propagation characteristics.
• Explain how seismic wave travel times help us understand Earth’s interior structure.
• Identify how focal mechanisms reveal fault types and stress orientations during earthquakes.+ Show more

Learning Objectives

• Identify major eukaryotic cell structures and their functions.
• Connect organelle structure and molecular composition to cellular tasks.
• Describe the role of specific organelles in different tissue types.+ Show more

Learning Objectives

• Understand how multiple lines of evidence support evolutionary relationships.
• Identify the types of fossil, anatomical, and molecular data used in evolutionary studies.
• Analyze how fossil, anatomical, and molecular evidence are integrated to reconstruct past biodiversity.+ Show more

Learning Objectives

• Understand how compounds are represented by chemical formulas and names.
• Explain the difference between ionic and covalent bonding and their effects on properties.
• Learn the law of definite composition and how it relates to compound stoichiometry.+ Show more

Learning Objectives

• Understand how DNA, RNA, and protein sequences are used to infer evolutionary relationships.
• Explain the concept of homologous genes and sequence divergence as molecular clocks.
• Identify patterns of shared genetic changes, gene duplications, and conserved elements that inform lineage relationships.+ Show more

Learning Objectives

• Understand the key mechanisms affecting energy efficiency in electrical systems.
• Identify strategies used to minimize energy losses and optimize system performance.
• Compare different equipment and design choices for improving energy efficiency.+ Show more

Learning Objectives

• Explain the processes of glycolysis, the citric acid cycle, and oxidative phosphorylation.
• Describe how mitochondrial structure supports ATP synthesis.
• Contrast aerobic and anaerobic pathways and their tissue-specific roles.+ Show more

Learning Objectives

• Describe the dissolution processes and solute-solvent interactions.
• Identify factors affecting solubility such as temperature and agitation.
• Differentiate saturated, unsaturated, and supersaturated solutions with examples.+ Show more

Learning Objectives

• Understand the structure and purpose of phylogenetic trees in evolutionary biology.
• Identify monophyletic, paraphyletic, and polyphyletic groups within trees.
• Distinguish between rooted and unrooted phylogenetic trees and interpret branch lengths.+ 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

• Describe the major biogeochemical cycles and their role in ecosystems.
• Identify the key processes driving movement of elements like carbon, nitrogen, and phosphorus.
• Explain the impact of fluxes and reservoir sizes on ecosystem responses and climate change.+ 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

• 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 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 interconnected nature of metabolic pathways and enzyme catalysis.
• Differentiate between catabolic and anabolic pathways and their roles in energy management.
• Explain how energy regulation aligns pathway activity with cellular needs.+ Show more

Learning Objectives

• Understand the fundamental role of enzymes as biological catalysts.
• Describe how enzyme structures relate to substrate specificity and catalytic efficiency.
• Explain the concepts of activation energy and transition states in enzymatic reactions.+ Show more

Learning Objectives

• Understand the fundamental mechanisms of evolution, including natural selection, genetic drift, mutation, and gene flow.
• Explain how these mechanisms interact to produce long-term changes in populations.
• Identify examples of evolution in real-world scenarios.+ Show more

Learning Objectives

• Explain how molecules move across cell membranes through passive and active processes.
• Differentiate between diffusion, facilitated diffusion, osmosis, and active transport.
• Describe vesicular transport mechanisms such as endocytosis and exocytosis.+ Show more

Learning Objectives

• Revise sentences to reduce confusion by making relationships between ideas explicit
• Check pronoun references so they point to the correct nouns
• Strengthen paragraph clarity by aligning topic statements with supporting details+ Show more

Learning Objectives

• Explain how unequal solar heating creates pressure differences that drive atmospheric circulation and winds
• Describe how energy and water vapor transfers between the surface and atmosphere influence clouds and precipitation
• Use the idea of local energy balance (temperature, humidity, pressure) to predict short-term weather patterns

Learning Objectives

• Explain how homeostasis maintains stable internal conditions using feedback mechanisms
• Describe the components of a feedback loop (receptors, control center, effectors, and output)
• Distinguish negative feedback from positive feedback and predict their effects on a regulated variable+ Show more

Learning Objectives

• Describe the process of ATP production in cellular respiration and photosynthesis.
• Explain the coupling of catabolic and anabolic reactions in energy transfer.
• Compare the roles of photosynthetic and respiratory electron transport chains.+ Show more

Learning Objectives

• Describe the roles of major organelles such as mitochondria, chloroplasts, endoplasmic reticulum, and lysosomes in cellular processes.
• Explain how internal structures like folded membranes and stacks relate to their functions such as ATP production and light capture.
• Compare the functions of different organelles and how compartmentation optimizes reaction rates and metabolic pathways.+ Show more