Grade 9 Science Worksheets

Learning Objectives

• Understand the principles of metric measurement and instrument resolution.
• Explain the importance of calibration in obtaining reliable data.
• Connect raw measurements to data representation and analyze sources of bias.+ Show more

Learning Objectives

• Identify key considerations in assessing safe and effective electrical system uses.
• Match device ratings and functions to specific electrical applications.
• Recognize appropriate protective measures for various electrical devices.+ 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

• Interpret earthquake waveforms, travel-time curves, and epicenter maps to understand subsurface structures.
• Distinguish between P- and S-wave arrivals, waveform amplitudes, and frequency content to identify shallow versus deep seismic events.
• Connect seismicity patterns to tectonic environments and surface hazard phenomena such as tsunamis using instrument-based records.

Learning Objectives

• Explain the biochemical pathways involved in cellular respiration and photosynthesis.
• Describe the role of ATP in energy transfer within cells.
• Analyze how organelles like mitochondria and chloroplasts contribute to metabolism.+ Show more

Learning Objectives

• Explain how genetic and epigenetic mechanisms contribute to phenotypic diversity.
• Describe the role of regulatory networks and timing changes in development.
• Analyze comparative developmental evidence to link gene variation to traits.+ Show more

Learning Objectives

• Analyze how multiple factors influence ecosystem responses and stability.
• Understand trophic interactions, feedback loops, and material fluxes in ecosystems.
• Evaluate impacts of climate variability, land-use change, and species introductions on ecosystem services.+ Show more

Learning Objectives

• Understand key molecular signaling pathways involved in gene expression and protein activity regulation.
• Identify mechanisms such as transcriptional regulation, signal transduction cascades, and receptor-ligand interactions.
• Interpret how molecular perturbations like mutations or drugs affect cellular functions and systemic outcomes.+ Show more

Learning Objectives

• Interpret paleoclimate evidence from various proxy records such as ice cores, tree rings, marine sediments, and speleothems.
• Understand proxy indicators like isotopic ratios, growth increments, and microfossil assemblages.
• Relate proxy records to past climate variability, including glacial-interglacial cycles and abrupt climate events.+ Show more

Learning Objectives

• Understand how to calculate the center of mass for composite systems.
• Analyze the conditions for static equilibrium involving torque and support bases.
• Evaluate stability criteria for structures and objects based on mass distribution and external forces.+ Show more

Learning Objectives

• Understand the principle of conservation of atoms during chemical reactions.
• Identify how energy changes occur in chemical reactions and their effects.
• Differentiate between exothermic and endothermic reactions with examples.+ Show more

Learning Objectives

• Understand the key factors that influence Earth's climate.
• Describe how solar energy and internal heat drive climate systems.
• Identify the roles of different Earth systems in climate variability.+ Show more

Learning Objectives

• Identify observable signs that indicate a chemical change has occurred.
• Distinguish between physical and chemical changes based on evidence.
• Recognize real-world examples of chemical change in environmental and industrial contexts.+ Show more

Learning Objectives

• Understand how to interpret coefficient ratios in balanced chemical equations to relate amounts of reactants and products.
• Apply proportional relationships to calculate masses of substances involved in chemical reactions.
• Estimate mass changes during reactions such as corrosion or fuel consumption using relative mass concepts.+ Show more

Learning Objectives

• Understand the particle model and how it explains matter's behaviour.
• Describe particle arrangements and motion in solids, liquids, and gases.
• Explain real-world examples of particle behaviour, such as salt dispersal and odour spread.+ Show more

Learning Objectives

• Explain the concepts of negative and positive feedback in maintaining internal stability.
• Describe physiological examples of feedback mechanisms such as thermoregulation, blood glucose control, and osmoregulation.
• Identify the components of feedback loops, including set points, sensors, effectors, and response timing.+ Show more

Learning Objectives

• Explain how genes and alleles determine genotypes and phenotypes
• Use dominant and recessive relationships to predict inheritance patterns
• Apply genotype-to-phenotype reasoning to interpret heredity evidence across generations

Learning Objectives

• Understand the differences between sexual and asexual reproduction.
• Identify examples of reproductive strategies in Alberta species.
• Compare the ecological trade-offs of different reproductive methods.+ Show more

Learning Objectives

• Understand how chemical change and mass conservation relate to environmental issues.
• Identify observable evidence of environmental transformations and interpret their causes.
• Explain the importance of system boundaries and measurable mass flows in environmental analysis.+ Show more

Learning Objectives

• Understand the different types of chemical reactions such as combustion, synthesis, and decomposition.
• Describe how chemical equations represent reactions and relate to real-world processes.
• Identify reactants and products in symbolic chemical equations.+ 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

• Describe the basic components of an atom: protons, neutrons, and electrons.
• Explain how atomic number and mass number define isotopes and elemental identity.
• Illustrate simple models of nuclei and electron shells to understand chemical behavior.+ Show more

Learning Objectives

• Understand the components and architecture of power distribution systems.
• Identify the trade-offs involved in system design, including reliability, capacity, and environmental impact.
• Analyze how faults propagate in power networks and the importance of system resilience.+ Show more

Learning Objectives

• Understand how the slope of displacement–time graphs relates to velocity.
• Interpret the area under velocity–time graphs to determine displacement.
• Identify non-uniform acceleration through curved graphs and discontinuities.+ Show more

Learning Objectives

• Understand key safety standards and codes related to electrical installations.
• Identify the purpose of protective devices and how to interpret their labels.
• Recognize environmental considerations affecting electrical safety.+ Show more

Learning Objectives

• Understand the role of sex chromosomes in inheritance.
• Explain how sex-linked traits are inherited and expressed.
• Distinguish between different sex determination systems in mammals.+ Show more

Learning Objectives

• Understand the law of conservation of mass and its significance in chemical reactions.
• Interpret balanced chemical equations to verify mass conservation.
• Explain how mass measurements relate to atomic rearrangements during reactions.+ Show more

Learning Objectives

• Understand the fundamental principles of oxidation and reduction in redox reactions.
• Identify oxidation states of atoms in chemical species and track electron transfer.
• Explain how redox reactions are involved in processes like combustion and displacement.+ Show more

Learning Objectives

• Understand the concept of limiting reactants and how they determine product yield.
• Calculate theoretical yield using balanced chemical equations and molar masses.
• Differentiate between actual yield and theoretical yield, and compute percent yield.+ Show more

Learning Objectives

• Understand the functions and roles of different cell organelles.
• Identify the specific activities carried out by mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes.
• Explain how organelle specialization supports cellular efficiency and coordination of metabolic pathways.+ Show more

Learning Objectives

• Identify the four main tissue types and their functions.
• Describe how tissue structure relates to its function.
• Explain the role of specialized cells in different tissues.+ Show more

Learning Objectives

• Understand the composition and function of different organ tissues.
• Describe how organs and organ systems work together to sustain life.
• Identify examples of organ systems and their interconnected roles.+ Show more

Learning Objectives

• Define inertia and explain its relationship to an object's mass.
• Describe real-world examples demonstrating inertia in everyday life.
• Understand how forces overcome inertia to change an object's motion.+ Show more

Learning Objectives

• Understand how ice cores, sediments, and proxies record past atmospheric conditions.
• Identify methods used to analyze historical greenhouse gases and climate change.
• Explain the significance of proxy data in understanding natural variability and recent trends.+ Show more

Learning Objectives

• Describe the concept of energy profiles and their significance in chemical reactions.
• Differentiate between exothermic and endothermic reactions based on energy profiles.
• Identify transition states and activation energy barriers in reaction pathways.+ Show more

Learning Objectives

• Understand the concepts of power and efficiency in mechanical systems.
• Describe how energy transfer affects performance in machines.
• Explain why systems lose energy and how that impacts efficiency.+ Show more

Learning Objectives

• Explain conservation of matter using a particulate (atom-level) view of reactions
• Describe how atoms rearrange to form products while their total counts remain constant
• Use chemical equations and formulas to check that atoms are conserved

Learning Objectives

• Explain how waves transfer energy and, in many cases, information without transporting matter overall
• Describe how frequency, wavelength, and amplitude relate to observable features of a wave
• Connect wave properties to the idea of energy carried by waves

Learning Objectives

• Explain how distance and time relate to speed using rate concepts
• Interpret distance–time and speed–time graphs to describe constant speed and changing speed
• Describe acceleration as the rate of change of speed and connect it to changes in motion

Learning Objectives

• Interpret position–time and velocity–time graphs by relating slope to velocity and acceleration.
• Determine displacement from the area under a velocity–time graph and explain sign changes.
• Connect piecewise motion on graphs to changes in kinematic variables and Newton’s second law.

Learning Objectives

• Explain how polygenic inheritance, epistasis, and pleiotropy can produce patterns that deviate from simple Mendelian ratios
• Describe how linkage, variable penetrance/expressivity, and environmental factors influence phenotype expression
• Use real-world examples from pedigrees or trait data to interpret complex inheritance outcomes

Learning Objectives

• Explain how gene expression converts DNA information into functional proteins through transcription and translation.
• Describe the roles of promoters, terminators, and messenger RNA in regulating transcription.
• Connect codons, tRNA, and the ribosome to how amino acids are assembled into polypeptides during translation.+ Show more

Learning Objectives

• Define work in terms of force and displacement and understand its relation to energy transfer.
• Differentiate between positive and negative work and their effects on an object's energy.
• Explain how work relates to real-world scenarios like lifting, pushing, and compression.+ Show more

Learning Objectives

• Explain how insulin and glucagon act as hormonal regulators to maintain blood glucose near a set point.
• Describe the negative feedback loop involved in blood glucose control using beta cells, alpha cells, liver, and muscle.
• Connect glucose regulation to energy balance by tracing how tissues store or release glucose.

Learning Objectives

• Understand the basic concepts of nuclear fission and fusion.
• Explain how nuclear reactions release energy through changes in nuclear binding energy.
• Describe the differences in conditions and energy outcomes between fusion and fission.+ Show more

Learning Objectives

• Explain how Earth's orbital and axial characteristics influence seasons and climate patterns.
• Describe the phases of the Moon and their predictable cycle.
• Understand how gravitational interactions between Earth, Moon, and Sun create tides.+ Show more

Learning Objectives

• Explain how organelles coordinate to move genetic information and proteins through the cell.
• Describe how mitochondria, lysosomes, and peroxisomes contribute to energy use, recycling, and detoxification.
• Use cause-and-effect reasoning to connect organelle functions to cellular homeostasis.+ Show more

Learning Objectives

• Describe the major stages of glycolysis and where they occur in the cell.
• Explain how glycolysis produces ATP and NADH, including the difference between investment and payoff.
• Compare what happens to pyruvate under aerobic versus anaerobic conditions.+ Show more