Grade 9 Science Worksheets

Learning Objectives

• Use scenario analysis and integrated assessment to compare mitigation and adaptation options under uncertainty.
• Apply cost-benefit evaluation and lifecycle assessment to identify trade-offs among environmental, economic, and social outcomes.
• Explain how decision models can support equitable, resilient, and sustainable policy choices.

Learning Objectives

• Explain how major genetic technologies (selective breeding, hybridization, genetic modification, and gene editing) can change traits
• Describe how trait changes occur at both molecular and population levels in agriculture
• Evaluate why monitoring and risk–benefit assessment matter for deploying biotechnology in real settings

Learning Objectives

• Explain how mitosis supports growth and tissue repair in multicellular organisms.
• Describe how meiosis produces haploid gametes and increases genetic variation through recombination.
• Distinguish chromosome pairing, segregation, and common errors such as nondisjunction.

Learning Objectives

• Explain how a rotating protoplanetary disk can lead to the formation of the solar system’s planets.
• Use meteorite evidence and isotopic radiometric dating to describe the timing of early Solar System events.
• Connect angular momentum distribution and volatile gradients to differences between inner rocky planets and outer gas giants.

Learning Objectives

• Differentiate genotype and phenotype in Mendelian inheritance
• Predict offspring outcomes using dominant and recessive allele interactions
• Use simple Punnett square logic to estimate genotype and phenotype probabilities

Learning Objectives

• Identify ecological, economic, and health risks and benefits linked to genetic technologies
• Explain how risk assessment, mitigation, and long-term monitoring reduce uncertainty
• Evaluate trade-offs using Alberta-relevant examples such as canola and cattle genetics

Learning Objectives

• Explain how sex chromosomes (X and Y) influence inheritance of certain traits.
• Distinguish X-linked recessive traits from other inheritance patterns using hemizygosity in males.
• Describe how dosage compensation affects gene expression across sexes.+ Show more

Learning Objectives

• Explain how redshift and Hubble’s law connect to the expansion of the universe and its age over time.
• Describe how cosmic microwave background (CMB) measurements and anisotropies provide benchmarks for early-universe conditions.
• Connect primordial abundances of hydrogen, helium, and lithium to Big Bang nucleosynthesis and early cosmic timescales.

Learning Objectives

• Explain how element symbols and chemical formulas represent matter in a concise way
• Interpret subscripts in formulas to determine particle counts in a compound
• Use balanced symbolic representations to connect qualitative descriptions to quantitative composition

Learning Objectives

• Compare sketch, CAD mockup, additive manufacturing, and scaled physical model approaches by fidelity and purpose.
• Describe how testing protocols and performance metrics guide iterative prototype refinement.
• Explain why documenting limitations helps teams improve future design cycles.

Learning Objectives

• Identify observable evidence that indicates a chemical change has occurred.
• Explain how evidence such as gas, precipitate, colour shift, and temperature change supports the formation of new substances.
• Distinguish chemical change from physical change using criteria based on ordinary conditions.

Learning Objectives

• Use algebraic models and simple computational methods to predict system behavior under defined assumptions.
• Estimate model parameters and interpret numerical results to justify design choices.
• Conduct sensitivity analysis to determine which inputs most strongly affect a performance objective.

Learning Objectives

• Explain how chemical and physical weathering contribute to surface change and soil development
• Describe how mass wasting and sediment transport move material across hillslopes and floodplains
• Analyze how climate signals, relief, and lithology help predict spatial patterns of geomorphic change

Learning Objectives

• Identify common observable properties of substances and describe what they reveal about matter.
• Classify samples using observable traits such as colour, hardness, conductivity, density, and solubility.
• Explain how observable properties can support practical decisions in everyday and industrial contexts.

Learning Objectives

• Explain how geological and atmospheric indicators help characterize natural hazards by origin, frequency, and potential impacts.
• Use hazard maps and recurrence intervals to discuss risk to human and ecological systems.
• Describe how triggering mechanisms and intersystem feedbacks influence the spread and long-term effects of natural hazards.

Learning Objectives

• Apply conservation of atoms to predict reaction products from balanced chemical reactions.
• Use reaction-type patterns (synthesis, decomposition, oxidation, neutralization) to make reasonable product predictions.
• Explain how reactant identities and typical bonding tendencies determine expected products.

Learning Objectives

• Explain how seismic waves, gravity data, and heat-flow measurements support models of Earth’s layered interior
• Interpret how P-wave and S-wave behavior reveals solid versus liquid regions inside Earth
• Describe how density contrasts and temperature gradients drive mantle convection and heat transfer+ Show more

Learning Objectives

• Describe the physical properties of solids, liquids, and gases and connect them to particle behavior.
• Explain how temperature and pressure changes cause phase transitions between states of matter.
• Use examples from the environment to predict and justify material state changes.

Learning Objectives

• Explain Newton’s second law using the relationship between net force, mass, and acceleration for constant mass systems
• Interpret free-body diagrams and determine the net force from force vectors and their components
• Use proportional reasoning to predict how changes in force affect acceleration+ Show more

Learning Objectives

• Explain how electric and magnetic fields are represented using field vectors and field lines.
• Use the superposition idea to predict the net electric or magnetic field at a point.
• Apply the Lorentz force to determine the direction of force on moving charges in magnetic fields.+ Show more

Learning Objectives

• Explain how molecular signaling pathways regulate gene expression and protein activity.
• Describe how receptor-ligand interactions and signal transduction cascades control cellular responses.
• Use examples to predict how disruptions (mutations or inhibitors) can change cellular and physiological outcomes.

Learning Objectives

• Explain how negative feedback helps maintain internal conditions within narrow limits.
• Differentiate sensor-effector loops from set points and describe how they produce stability.
• Compare the timing of rapid corrective responses to slower hormonal adjustments in feedback systems.

Learning Objectives

• Define electric current, voltage, and resistance using correct units and symbols.
• Explain how voltage and resistance affect current using simple reasoning and the ideas behind Ohm’s law.
• Interpret common instrument readings and typical ratings for household and farm electrical equipment.

Learning Objectives

• Explain how cellular respiration and photosynthetic carbon fixation connect to organelles and energy needs
• Describe key stages of cellular respiration (glycolysis, citric acid cycle, and electron transport) and how they contribute to ATP production
• Use quantitative reasoning to interpret reactants/products and relate oxygen consumption and ATP yield to metabolic flux

Learning Objectives

• Explain how nucleic acid sequence information can specify amino acid chains through genetic coding.
• Connect protein folding and 3D structure to how cells build organelles and carry out functions.
• Describe how specific cellular components (e.g., ribosomes, endoplasmic reticulum, mitochondria) relate to macromolecular structure and function.

Learning Objectives

• Compare ionic lattices, covalent networks, and molecular solids using particle arrangement and electrical interactions.
• Predict how melting point, electrical conductivity, hardness, and solubility relate to interparticle forces.
• Use evidence from material properties to identify the likely structure of an unknown solid.

Learning Objectives

• Explain how optimization involves balancing competing goals through tradeoffs and constraints.
• Use basic reasoning with models and evidence to compare alternative design choices.
• Describe how changes to one design parameter can affect performance, cost, durability, and efficiency.

Learning Objectives

• Explain how friction and aerodynamic drag oppose motion and convert mechanical energy into thermal energy.
• Identify the variables that affect friction on surfaces and drag in air for real-world objects.
• Use coefficients and basic models to estimate resistance forces qualitatively.

Learning Objectives

• Explain how engineering design uses performance requirements linked to human needs and public priorities.
• Describe how engineering choices affect access, reliability, and safety in real-world systems.
• Evaluate how technology trade-offs can support or limit equity and long-term usability.

Learning Objectives

• Explain how design criteria and constraints guide an engineering solution from a stated problem to testable requirements.
• Use scientific principles and evidence to connect design features to expected performance under real-world limits.
• Identify how models help predict outcomes and how measurable criteria support safer, more effective designs.

Learning Objectives

• Explain how constraints affect engineering designs and limit achievable performance.
• Identify common types of constraints (materials, cost, power, regulations, and environmental conditions) in a real system.
• Use constraint-informed reasoning to propose feasible design choices for a given engineering problem.

Learning Objectives

• Explain how heritable traits can affect survival and reproduction in a specific environment
• Describe how natural selection changes allele frequencies over multiple generations
• Interpret patterns in phenotypes across generations using simple population models

Learning Objectives

• Explain how meiosis creates gametes with combinations of alleles from parents
• Describe how chromosome behavior during sexual reproduction contributes to inherited traits
• Connect genetic variation from recombination and heritable mutations to differences in offspring genotypes+ Show more

Learning Objectives

• Explain how negative feedback helps maintain homeostasis when internal conditions change
• Identify the key parts of a feedback loop (set point, sensors, control center, effector)
• Compare homeostasis examples such as temperature, blood glucose, and oxygen delivery

Learning Objectives

• Explain how anatomical, fossil, and molecular evidence support common ancestry.
• Describe how similarities and differences among traits can result from evolutionary divergence.
• Interpret molecular similarities as clues to evolutionary relationships.

Learning Objectives

• Explain how limiting resources and ecological factors affect survival and reproduction in a community.
• Describe carrying capacity and how biotic interactions (competition and predation) influence population size.
• Predict how changes in environmental conditions can shift species abundance and community composition.

Learning Objectives

• Explain how relative scale and perspective help describe distances and sizes in the solar system.
• Relate apparent sky motion and brightness to real orbital motion and distances.
• Use reasoning about scale to compare observations across planets.

Learning Objectives

• Explain how monitoring air and water quality provides evidence of pollution changes over time.
• Describe how chemical indicators, flow conditions, and spatial patterns help identify pollution sources and pathways.
• Evaluate strategies that prevent or reduce emissions to minimize downstream environmental harm.

Learning Objectives

• Explain how human actions can change air, water, and land systems and create tradeoffs.
• Evaluate environmental solutions by considering mechanisms of harm, benefits, side effects, and feasibility.
• Use scientific reasoning to predict how environmental changes can propagate through ecosystems, including uncertainty.

Learning Objectives

• Explain how matter cycles through Earth systems using reservoirs and processes such as evaporation, condensation, and precipitation
• Describe how carbon and nutrients move among the atmosphere, oceans, organisms, and rocks over time
• Use evidence and simple models to predict how changes in material cycles can affect surface conditions and climate

Learning Objectives

• Distinguish weather from climate using evidence and timescales
• Explain how greenhouse gases and feedbacks can influence long-term temperature
• Describe how natural records (ice cores and ocean sediments) provide climate evidence+ Show more

Learning Objectives

• Explain how wave speed depends on frequency and wavelength using the relationship v = fλ
• Compare how wave speed can differ across media and wave types (sound vs electromagnetic)
• Use wave-property relationships to predict how changing frequency or wavelength affects propagation

Learning Objectives

• Explain how waves behave at boundaries between media using reflection and refraction
• Describe how transmission and absorption affect the energy carried by waves
• Predict changes in wavelength and wave direction when wave speed changes across media

Learning Objectives

• Explain how chemical reactions conserve matter by rearranging atoms into new substances.
• Describe how energy changes in reactions relate to bond energy and temperature/heat changes.
• Distinguish exothermic and endothermic reactions using energy transfer evidence.

Learning Objectives

• Explain how atomic number relates to repeating patterns in the periodic table.
• Predict trends in element properties (reactivity and typical ion charge) using group and period patterns.
• Describe how electron arrangement in outer energy levels drives periodic behavior.

Learning Objectives

• Explain how nuclear fission and fusion change atomic nuclei and release or absorb energy.
• Relate nuclear binding energy differences to why mass and energy are equivalent in nuclear reactions.
• Describe how ionizing radiation affects matter and why nuclear reactions require careful control.

Learning Objectives

• Explain Newton’s second law using the relationship between net force, mass, and acceleration
• Determine how unbalanced forces and their directions affect acceleration and motion
• Use vector ideas to reason about combining forces and predicting acceleration changes over time

Learning Objectives

• Explain how momentum depends on mass and velocity and use the momentum formula in reasoning.
• Apply the law of conservation of momentum to collisions and explosions when only internal forces act.
• Compare elastic and inelastic collisions by tracking momentum and kinetic energy outcomes.