Grade 9 Worksheets

Learning Objectives

• Explain how alleles are different forms of a gene and how inherited allele combinations influence traits.
• Describe how dominance relationships affect phenotype outcomes in offspring.
• Analyze how multiple genes and multiple alleles in a population contribute to continuous variation.

Learning Objectives

• Explain how work depends on force, displacement, and the angle between them.
• Use the work–energy theorem to predict how net work changes kinetic energy.
• Determine whether an object speeds up or slows down based on the direction of net force relative to motion.

Learning Objectives

• Explain how scientific knowledge depends on evidence, models, and measurement rather than a single method.
• Identify how technology, perspective, and uncertainty can influence scientific observations and conclusions.
• Describe why transparency, assumptions/limitations, and peer evaluation improve the reliability of scientific claims.+ Show more

Learning Objectives

• Explain how uncertainty arises from both random variation and systematic error in measurements.
• Use uncertainty and appropriate significant figures to communicate results in science.
• Judge whether two measurements are consistent by comparing them within reported uncertainty.

Learning Objectives

• Define and explain the concept of inertia and its relation to mass.
• Describe real-world examples of inertia in everyday life.
• Understand how forces are required to change an object's state of motion due to inertia.+ 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

• Explain what albedo feedback is and how it influences climate change.
• Identify surface changes that affect Earth's reflectivity.
• Describe the effects of melting ice, snow, vegetation shifts, and cloud cover on albedo.+ Show more

Learning Objectives

• Identify respectful discussion norms, including turn-taking, acknowledging perspectives, and staying focused on the purpose of the conversation.
• Analyze how listening and speaking work together to build shared understanding during a discussion.
• Practice responding to others by referencing ideas accurately and using evidence-based statements without dismissing or interrupting.

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 the principles governing molecular shape based on electron pair repulsion.
• Identify common molecular geometries such as linear, trigonal planar, tetrahedral, and bent.
• Explain how molecular shape influences polarity and intermolecular forces.+ 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

• 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 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 work quantifies energy transfer through force and distance.
• Describe how simple machines modify force and distance to improve work efficiency.
• Identify real-world examples of levers, pulleys, and inclined ramps in Alberta contexts.+ 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 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 concept of element symbols and their formation.
• Identify common chemical formulas and interpret their meaning.
• Connect symbolic representations to real-world chemical substances.+ Show more

Learning Objectives

• Understand how to interpret and apply coefficient ratios from balanced chemical equations.
• Calculate mass relationships among reactants and products in chemical reactions.
• Relate symbolic chemical equations to real-world mass measurements and conservation laws.+ 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

• Analyze societal and ethical dimensions of genetic technologies.
• Evaluate the responsibilities of stakeholders in genetic science.
• Discuss the role of policy, public dialogue, and ethical frameworks in responsible innovation.+ 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

• Understand how mole relationships connect masses of reactants and products through balanced equations.
• Learn to calculate molar masses and convert between mass and amount of substance.
• Recognize the significance of coefficients in balanced chemical equations for mole ratios.+ 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 basic principles of electric motors and generators.
• Identify different types of motors and their applications.
• Explain electromagnetic induction and how it is used in generators.+ 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

• 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 Mendelian and Non-Mendelian inheritance patterns.
• Identify different types of inheritance such as incomplete dominance, codominance, and sex-linked traits.
• Explain how environmental factors and gene linkage influence trait expression.+ Show more

Learning Objectives

• Describe the structure and function of ATP as the cell's energy currency.
• Explain the process of hydrolysis of ATP and how it releases energy.
• Understand the role of phosphorylation in regenerating ATP and coupling biochemical reactions.+ Show more

Learning Objectives

• Describe the process of electron transport chains in mitochondria and chloroplasts.
• Explain how proton gradients are generated and used to produce ATP via chemiosmosis.
• Compare and contrast mitochondrial and thylakoid electron transport mechanisms.+ 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

• Describe the processes of transcription and translation in gene expression.
• Identify key components involved in gene expression such as RNA polymerase, mRNA, tRNA, and ribosomes.
• Explain how regulation and modifications influence gene expression outcomes.+ Show more

Learning Objectives

• Understand the processes involved in light reactions within photosynthesis.
• Identify the role of pigment complexes and photosystems in capturing light energy.
• Explain how photon energy leads to electron flow, proton gradient formation, and energy carrier production.+ Show more

Learning Objectives

• Understand how catabolic and anabolic pathways connect to support organismal energy needs.
• Explain the role of hormones and nutrient availability in shifting metabolic priorities.
• Describe immediate and long-term metabolic adjustments at the molecular and organelle levels.+ 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

• 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

• 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

• 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 the relationship between net force, mass, and acceleration.
• Explain how vector quantities of force and acceleration influence movement.
• Analyze the effect of changing forces and mass on an object's acceleration.+ 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

• Explain how mechanical systems transfer energy through work, collisions, and friction.
• Describe how energy converts between kinetic, potential, and thermal forms in systems.
• Identify examples of energy transfer, such as braking a bicycle or compressing a spring.+ Show more

Learning Objectives

• Understand how to interpret displacement–time, velocity–time, and acceleration–time graphs.
• Identify the physical quantities represented by the slope and area in motion graphs.
• Recognize changing acceleration through curved segments on graphs.+ Show more

Learning Objectives

• Understand the concept of genetic drift and how it affects small populations.
• Identify different events that can lead to genetic drift such as bottlenecks and founder effects.
• Explain how chance events influence allele frequencies over time.+ Show more

Learning Objectives

• Understand how to quantify and interpret random and systematic uncertainties in measurements.
• Learn to calculate and interpret standard deviation, standard error, and confidence intervals.
• Apply error propagation methods to combined measurements and datasets.+ Show more

Learning Objectives

• Understand different measures of dispersion and distribution shape, including variance, interquartile range, range, and coefficient of variation.
• Interpret how each variability metric informs confidence in statistical estimates and comparisons.
• Relate measures of variability to sampling design, heterogeneity across groups, and theoretical models.+ 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

• Explain how light exhibits wave-like behavior in phenomena such as interference and diffraction
• Describe particle-like behavior of light using models based on discrete energy packets
• Apply the photoelectric effect to connect light frequency with electron emission

Learning Objectives

• Explain how momentum depends on mass and velocity and identify momentum units.
• Apply the idea that total momentum of a system is conserved when only internal forces act.
• Compare elastic and inelastic collisions by focusing on momentum conservation versus kinetic energy behavior.

Learning Objectives

• Explain Newton’s second law using net force, mass, and acceleration (Fnet = m a).
• Describe how unbalanced, vector forces determine both the direction and magnitude of acceleration.
• Predict changes in velocity over time using acceleration and the duration of a net force.