Grade 9 Science Worksheets

Learning Objectives

• Explain how DNA, RNA, and protein sequence comparisons can reveal evolutionary relationships.
• Describe how molecular clocks use sequence divergence rates to estimate divergence times.
• Evaluate how comparative genomics and gene duplication patterns complement fossil and morphological evidence.

Learning Objectives

• Explain how mechanical energy changes between kinetic and potential forms through work interactions
• Describe how non-conservative forces like friction convert mechanical energy into thermal energy
• Use energy bookkeeping to predict feasible speeds and heights for real situations+ Show more

Learning Objectives

• Distinguish when to use mean, median, and mode as measures of central tendency in different data contexts
• Explain how skewness, outliers, and multimodal distributions affect each central tendency measure
• Connect assumptions about an underlying data-generating process to the choice of a summary statistic+ Show more

Learning Objectives

• Distinguish systematic error from random error and identify how each affects measurements.
• Recognize common sources of error, including instrument bias, sampling limitations, confounding, and model mis-specification.
• Use evidence such as residual patterns, cross-method comparisons, and sensitivity analyses to detect bias.+ Show more

Learning Objectives

• Understand the differences between sexual and asexual reproduction.
• Identify examples of reproductive strategies used by organisms in Alberta.
• Compare ecological trade-offs related to reproductive methods.+ Show more

Learning Objectives

• Calculate velocity using constant-acceleration kinematic equations
• Select equations based on known variables and units
• Apply sign conventions to one-dimensional vertical free-fall+ Show more

Learning Objectives

• Explain hierarchical levels of organization from cells to systems using correct scientific vocabulary.
• Describe how cell specialization and extracellular matrices contribute to emergent organ functions.
• Interpret how tissue arrangement and transport at interfaces affect physiological capacity and constraints.

Learning Objectives

• Explain the components of trophic structure, including producers, consumers, and decomposers.
• Describe the roles of food chains and food webs in illustrating energy flow.
• Analyze how trophic efficiency influences biomass and ecosystem productivity.+ Show more

Learning Objectives

• Explain the relationship between net force, mass, and acceleration
• Distinguish mass from weight in force and acceleration contexts
• Calculate acceleration from net force and mass+ Show more

Learning Objectives

• Explain how magnets and moving electric charges create magnetic fields
• Use field line orientation to predict force direction on magnetic materials
• Relate current direction in a wire to magnetic field direction using right-hand rules

Learning Objectives

• Identify common sources of random and systematic error in scientific investigations.
• Distinguish between confounding and model mis-specification, and explain how each can affect results.
• Use evidence from cross-method comparisons, residual patterns, and sensitivity analyses to evaluate bias.+ Show more

Learning Objectives

• Explain the purpose of assessing model-data fit in scientific analysis.
• Identify graphical and quantitative methods used to evaluate the consistency between models and observations.
• Interpret residual plots and goodness-of-fit measures to diagnose potential issues in models.+ Show more

Learning Objectives

• Understand the basic concepts of Earth's orbital variations.
• Learn how Milankovitch cycles influence Earth's climate over long timescales.
• Identify the three main components of Milankovitch cycles: eccentricity, axial tilt, and precession.

Learning Objectives

• Explain how eccentricity, axial tilt, and precession affect seasonal insolation patterns.
• Describe tidal forcing by the Moon and Sun using ideas of gravitational gradients and relative geometry.
• Connect tidal locking, resonance, and observational effects such as day length and tidal range.

Learning Objectives

• Understand the components that make up an ecosystem.
• Recognize how disturbances can alter ecosystem stability.
• Learn about factors that influence ecosystems' ability to recover.+ Show more

Learning Objectives

• Explain how Earth's eccentricity influences seasonal weather patterns.
• Identify the effects of axial tilt on the distribution of sunlight during different seasons.
• Describe the concept of precession and its impact on long-term climate variability.+ Show more

Learning Objectives

• Explain how enzymes lower activation energy to increase reaction rates
• Describe how enzyme structure, active sites, and induced fit support substrate specificity
• Compare the roles of cofactors and coenzymes in enzyme-catalyzed reactions+ Show more

Learning Objectives

• Explain the process of pulmonary gas exchange at the alveolar–capillary interface.
• Describe how partial pressures, surface area, and membrane thickness influence diffusion of gases.
• Identify factors affecting oxygen uptake and carbon dioxide removal, including haemoglobin affinity and perfusion.+ Show more

Learning Objectives

• Understand the concept of significant figures and their importance in measurements
• Identify significant figures in various measurement readings
• Learn how to convert measurement units accurately+ Show more

Learning Objectives

• Understand the mechanisms of asexual reproduction such as binary fission, budding, spore formation, and vegetative propagation.
• Identify examples of asexual reproduction in Alberta's flora and fauna.
• Explain the genetic and ecological advantages and disadvantages of asexual reproduction.+ Show more

Learning Objectives

• Describe the three main states of matter: solid, liquid, and gas, and their key properties.
• Explain the processes of phase transitions such as melting, freezing, evaporation, condensation, and sublimation.
• Link energy changes to phase transitions and understand environmental influences on states of matter.

Learning Objectives

• Explain how inertia affects whether the motion of an object changes when forces are applied
• Use Newton’s second law to predict how acceleration changes with net force and mass
• Apply Newton’s third law to real situations involving recoil and anchored objects+ Show more

Learning Objectives

• Define evolution in terms of changes to heritable traits over generations.
• Identify key vocabulary related to evolution: allele, population, selection, drift, mutation, gene flow.
• Explain, using evidence from a text, how allele frequencies can change over time.

Learning Objectives

• Compare prokaryotic and eukaryotic cell structures, focusing on organelles, nucleus, and chromosome type.
• Explain how differences in cell organization affect cell size, complexity, and metabolic capabilities.
• Use evidence from cell structure to model how evolutionary pressures can shape cellular complexity.

Learning Objectives

• Identify what divergent boundaries are and how they differ from other plate boundaries.
• Describe landforms and geological processes associated with divergent margins.
• Explain the process of seafloor spreading and the formation of mid-ocean ridges.+ Show more

Learning Objectives

• Explain how a device can be modeled as a system with interacting components that produce intended outputs.
• Identify inputs, outputs, energy transfers, and material flow in a robotic gripper context.
• Use system boundaries and systems thinking to reason about constraints, reliability, and failure risk.

Learning Objectives

• Explain how Earth’s rotation causes the apparent daily motion of celestial objects across the sky.
• Describe how Earth’s revolution changes which constellations and stars are visible in different seasons.
• Use altitude and azimuth ideas to relate rising/setting directions to an observer’s perspective.+ Show more

Learning Objectives

• Explain how net force is found by vector addition of forces acting on an object
• Predict motion changes using the relationship between net force, direction, and acceleration
• Determine when an object is in equilibrium using the idea of zero net force

Learning Objectives

• Understand how land use changes such as urbanization and agriculture impact ecosystems.
• Identify different human activities that lead to habitat fragmentation and pollution.
• Recognize the effects of human impacts on species diversity and ecosystem services.+ Show more

Learning Objectives

• Explain how power relates to the rate of energy transfer
• Calculate or compare efficiency using input energy and useful output energy
• Interpret how energy losses affect practical machine performance+ Show more

Learning Objectives

• Describe the overall inputs and outputs of photosynthesis in chloroplasts.
• Explain how light-dependent reactions and carbon fixation work as separate, connected stages.
• Identify the roles of pigments, electron transport, ATP, and NADPH in converting solar energy to chemical energy.

Learning Objectives

• Differentiate between bacterial and archaeal cell structures and functions.
• Compare prokaryotic and eukaryotic cell organization and complexity.
• Identify key features that distinguish prokaryotes from eukaryotes.+ Show more

Learning Objectives

• Identify Earth’s main carbon reservoirs
• Describe pathways that move carbon between reservoirs
• Explain photosynthesis, respiration, dissolution, and sedimentation+ Show more

Learning Objectives

• Explain how energy flows one direction through food chains while being lost at each trophic transfer
• Describe how matter cycles through ecosystems by rearranging atoms during processes like photosynthesis and cellular respiration
• Use models (trophic levels, biomass trends, and energy-flow diagrams) to interpret evidence about energy and matter movement

Learning Objectives

• Understand how inheritance patterns influence trait prediction across multiple generations.
• Apply probability concepts to forecast phenotype ratios based on parental alleles.
• Analyze how dominant and recessive traits are expressed and masked in offspring.+ Show more

Learning Objectives

• Understand the structure and significance of phylogenetic trees in evolutionary biology.
• Identify the features of rooted versus unrooted trees and their purposes.
• Differentiate between monophyletic, paraphyletic, and polyphyletic groups.+ Show more

Learning Objectives

• Identify common sources of systematic and random error in scientific experiments.
• Describe methods for detecting bias, including cross-method comparison and residual analysis.
• Explain how error quantification contributes to understanding uncertainty and robustness.+ Show more

Learning Objectives

• Evaluate biotech applications by comparing benefits, risks, and societal impacts.
• Analyze ethical concerns in genetic technologies, including privacy, consent, and equity.
• Explain how risk–benefit assessments and public engagement can shape biotech regulation.

Learning Objectives

• Assess how everyday chemicals provide benefits and also pose risks to health and the environment.
• Explain how chemical properties and persistence influence exposure pathways and long-term effects.
• Use evidence-based reasoning to compare safe handling, disposal, and regulatory decisions for chemical use.

Learning Objectives

• Explain how resistive losses and power factor reduce electrical system efficiency
• Compare metrics used to evaluate efficiency and operating cost in electrical systems
• Describe design choices that improve performance while meeting operational constraints

Learning Objectives

• Describe the key steps of the Calvin cycle and its role in photosynthesis.
• Explain how ATP and NADPH are utilized during carbon fixation and sugar synthesis.
• Identify the enzymes involved in the Calvin cycle, especially ribulose bisphosphate carboxylase.+ Show more

Learning Objectives

• Interpret coefficient ratios in a balanced chemical equation to relate relative amounts of reactants and products.
• Use mass conservation to explain how total mass is conserved during reactions such as corrosion and fuel combustion.
• Calculate and justify reaction quantities using proportional reasoning and relative masses.

Learning Objectives

• Define and describe the four main types of ecosystem services: provisioning, regulating, cultural, and supporting.
• Explain the role of biodiversity in maintaining ecosystem services such as pollination, water purification, and carbon sequestration.
• Assess how land-use change, pollution, and climate shifts impact ecosystem service capacity and distribution.+ Show more

Learning Objectives

• Understand the basic concepts of ionic, covalent, and metallic bonding.
• Identify different bond types and their characteristics.
• Describe how atomic electron configurations relate to bonding and material properties.+ Show more

Learning Objectives

• Explain how changing magnetic flux induces an electromotive force (voltage) in a conductor.
• Predict how changes in flux affect induced voltage direction and the idea of frequency in generation.
• Describe real-world applications such as generators, transformers, and step-up/step-down power systems.

Learning Objectives

• Explain ethical concerns related to genetic technologies, including privacy, consent, and potential harms
• Evaluate how policy and public dialogue can guide responsible use of genetic science
• Compare stakeholder responsibilities and ethical frameworks when benefits and risks affect different communities+ Show more

Learning Objectives

• Understand the basic principles of population genetics.
• Explain allele frequency and its significance.
• Describe Hardy-Weinberg equilibrium assumptions.+ Show more

Learning Objectives

• Explain how changing magnetic flux induces an emf in a conductor.
• Use Faraday’s law and Lenz’s law to predict induced voltage magnitude and direction.
• Describe how generators and transformers rely on electromagnetic induction in real power systems.