Grade 9 Science Worksheets

Learning Objectives

• Explain how alleles (different forms of a gene) combine to form genotypes that determine traits.
• Use dominance relationships to predict phenotypes from allele combinations.
• Describe how multiple genes and allele variation contribute to continuous variation and trait reappearance.+ Show more

Learning Objectives

• Explain how coefficients in a chemical equation represent relative particle amounts and help maintain conservation of matter.
• Balance simple chemical equations by ensuring the number of atoms of each element matches on both sides.
• Interpret how changing one reactant amount can affect the possible amounts of products using the balanced equation.

Learning Objectives

• Explain how eccentricity, axial tilt, and precession affect Earth’s incoming solar energy (insolation).
• Describe why Milankovitch cycles operate on timescales of tens to hundreds of thousands of years.
• Interpret how climate feedbacks and geological evidence connect orbital changes to glacial and interglacial periods.

Learning Objectives

• Differentiate ionic, covalent, and metallic bonding based on electron behavior
• Connect bond type to common observable properties such as melting point and conductivity
• Use particle-level reasoning to predict how bonding affects physical and chemical behavior

Learning Objectives

• Explain how the cell membrane controls exchanges between a cell and its environment.
• Describe the roles of cytoplasm, genetic material, and major organelles in cell function.
• Use models (diagrams and scaled 3D representations) to interpret relative size and interactions inside cells.

Learning Objectives

• Explain how insulin and glucagon work together to regulate blood glucose during feeding and fasting
• Describe how the liver, muscle, and adipose tissue respond to hormone signals to maintain metabolic homeostasis
• Predict how glucose levels change when insulin or glucagon activity is altered

Learning Objectives

• Explain how organs are built from multiple tissue types that work together for a specific physiological role.
• Describe how organ systems coordinate with one another to maintain homeostasis.
• Use structural features of organs and tissues to predict how organisms function and respond to change.

Learning Objectives

• Explain how friction opposes relative motion and how it can convert kinetic energy into thermal energy
• Differentiate static friction and kinetic friction and describe how each affects motion
• Use the idea that friction depends on surface properties and normal force to predict net force and acceleration

Learning Objectives

• Explain inertia as an object’s resistance to changes in motion
• Relate inertia to mass and describe how net force and acceleration are connected
• Use real-world examples to predict and justify motion outcomes

Learning Objectives

• Explain how allele frequencies change over generations through natural selection, genetic drift, mutation, and gene flow
• Distinguish among the main mechanisms of evolution and predict their likely effects on populations
• Use key vocabulary (allele, heritable trait, adaptation, population) to describe evolution accurately

Learning Objectives

• Explain how fossil records provide evidence of past life using preservation, stratigraphy, and dating methods.
• Distinguish between relative age and absolute age and describe how radiometric dating supports timelines.
• Evaluate how taphonomy and preservation bias affect what organisms appear in the fossil record.

Learning Objectives

• Explain how genetic drift changes allele frequencies due to random events rather than differences in fitness
• Differentiate genetic drift from natural selection and from gene flow
• Describe how bottlenecks and founder effects can reduce genetic diversity and lead to fixation or loss of alleles+ Show more

Learning Objectives

• Explain how matter moves among atmosphere, hydrosphere, lithosphere, and biosphere in biogeochemical cycles.
• Describe the roles of key processes (photosynthesis, decomposition, nitrogen fixation, and weathering) in regulating cycle rates and ecosystem productivity.
• Interpret how changes in reservoir size and flux affect model predictions for carbon, nitrogen, and phosphorus pools.

Learning Objectives

• Evaluate biotechnology decisions by weighing benefits, risks, and long-term societal impacts.
• Analyze ethical issues related to genetic privacy, informed consent, and equitable access to therapies.
• Explain how ecological and health risks (including unintended genome edits) influence ethical and regulatory choices.+ Show more

Learning Objectives

• Explain how transcription and translation convert DNA information into a functional protein.
• Identify the roles of key molecules involved in gene expression (RNA polymerase, mRNA, ribosome, tRNA).
• Describe how regulation at transcriptional and translational stages affects when and how much a gene is expressed.+ Show more

Learning Objectives

• Explain how equilibrium and kinetics influence which products form in a chemical process.
• Use equilibrium constants, rate ideas, and mass balance reasoning to predict and improve product distribution in a closed system.
• Describe how temperature, pressure, concentration, and catalysts can be refined to increase yield and selectivity while limiting side reactions.

Learning Objectives

• Explain how P-wave and S-wave evidence is used to infer Earth’s layered internal structure.
• Use ideas about density contrasts and heat-flow to justify where the crust, mantle, and core are located.
• Describe how mantle convection and thermal energy transfer drive long-term changes in Earth’s interior and surface.

Learning Objectives

• Describe how stars form and evolve through the main sequence and later stages based on mass
• Explain how Hertzsprung-Russell diagrams and spectral classification provide evidence for stellar properties
• Compare terminal outcomes of stellar evolution (white dwarfs, neutron stars, black holes) and connect them to nucleosynthesis

Learning Objectives

• Explain how photon energy depends on frequency using Planck’s relation.
• Relate electromagnetic wave properties (frequency, wavelength) to how signals interact with matter.
• Interpret spectral features (emission and absorption lines) and connect them to atomic energy levels.+ Show more

Learning Objectives

• Use Q = m·c·ΔT and appropriate sign conventions to calculate thermal energy transferred for temperature changes.
• Explain how conduction, convection, and radiation move heat, and identify which mechanism applies in common scenarios.
• Apply conservation of energy in closed systems by relating heat gained and heat lost across parts of a system.

Learning Objectives

• Describe and calculate kinetic energy and gravitational potential energy using appropriate formulas and units.
• Use energy accounting to explain how work, power, and mechanical energy change in near-ideal systems.
• Analyze how non-conservative forces (such as friction) affect the mechanical energy budget and motion.

Learning Objectives

• Explain how fossil evidence can reveal patterns of descent and change over time.
• Compare homologous structures and predict how similar body plans support common ancestry.
• Interpret molecular sequence similarities and use them to infer relatedness.+ Show more

Learning Objectives

• Explain how reproductive isolation prevents gene flow and enables speciation
• Compare allopatric and sympatric speciation models using examples
• Describe how genetic divergence, hybrid zones, and polyploidy contribute to new species

Learning Objectives

• Explain how DNA replication and meiosis help ensure hereditary information is passed from parents to offspring.
• Describe the roles of gametes and zygote formation in forming a new individual with a complete set of chromosomes.
• Use karyotype patterns and simple pedigree ratios to connect chromosome behavior with observable traits.+ Show more

Learning Objectives

• Describe key mechanisms of asexual reproduction (binary fission, budding, spore formation, and vegetative propagation).
• Explain genetic and ecological consequences of producing clones compared with sexual reproduction.
• Apply concepts to Alberta examples such as aspen root-sucker groves and horticultural propagation.

Learning Objectives

• Synthesize how reproduction type affects genetic diversity in breeding programs
• Explain how inheritance mechanisms (chromosomes and Mendelian patterns) determine trait outcomes
• Analyze how selection changes variation and connects to ecological and ethical consequences

Learning Objectives

• Compare sexual and asexual reproduction in terms of genetic variation
• Identify examples of reproductive strategies found in Alberta ecosystems
• Explain ecological trade-offs between population growth and genetic diversity

Learning Objectives

• Explain how balancing a chemical equation enforces conservation of atoms.
• Use coefficients to determine reactant and product atom counts on both sides of an equation.
• Connect balanced equations to measurable mass relationships in real-world reactions.

Learning Objectives

• Explain how element symbols represent elements and how their capitalization affects meaning.
• Interpret chemical formulas using subscripts to determine relative numbers of atoms.
• Convert between written descriptions and formulas for common substances.

Learning Objectives

• Define observable properties and distinguish them from properties that require special equipment or conditions.
• Classify common materials using observable traits such as colour, hardness, density, solubility, and conductivity.
• Use evidence from observations to justify how matter can be grouped for everyday and industrial purposes.

Learning Objectives

• Describe how solids, liquids, and gases differ in structure and properties (lattice arrangement, fluidity, and compressibility).
• Explain phase changes using temperature/pressure changes and energy transfer (heating and cooling).
• Use particle ideas to predict how matter behaves during freezing, melting, evaporation, condensation, and sublimation.

Learning Objectives

• Explain how resistive losses, power factor, and device selection affect electrical system efficiency.
• Use key metrics (e.g., real vs apparent power, efficiency, and loss mechanisms) to compare design options.
• Evaluate energy-saving strategies while considering real-world constraints such as infrastructure and operating requirements.

Learning Objectives

• Explain mechanical advantage as a ratio that compares input force to load force (or input distance to load distance).
• Calculate and interpret mechanical advantage for levers and pulley systems, including how they affect force and displacement.
• Describe trade-offs between force reduction and increased movement distance in common machines.+ Show more

Learning Objectives

• Use residual plots and graphical overlays to evaluate how well a model matches empirical data
• Interpret patterns in residuals to diagnose systematic errors, heteroscedasticity, and missing variables
• Select appropriate goodness-of-fit ideas and justify whether to accept, modify, or reject a model

Learning Objectives

• Explain how valence electrons influence whether bonds form through transfer or sharing.
• Differentiate ionic bonding and covalent bonding using the atomic/electron model.
• Predict how bonding type can affect properties such as conductivity and melting point.

Learning Objectives

• Explain how energy is conserved during energy conversions in real systems
• Describe why some energy becomes less useful as thermal energy during conversions
• Calculate or reason about efficiency using useful output and total input energy+ Show more

Learning Objectives

• Explain momentum and how it depends on mass and velocity.
• Use conservation of total momentum to analyze collisions and explosions with internal forces.
• Differentiate elastic and inelastic collisions by comparing how kinetic energy behaves.

Learning Objectives

• Explain Newton’s second law in terms of net force, acceleration, and mass
• Predict the direction and relative size of acceleration from unbalanced forces
• Use vector thinking to combine forces by direction, not just magnitude+ Show more

Learning Objectives

• Explain conservation of matter by tracking atoms in chemical reactions.
• Describe how reactants’ atoms are rearranged into new substances while atoms are conserved.
• Relate energy changes in reactions to temperature changes and heat transfer.+ Show more

Learning Objectives

• Explain how tectonic activity creates landforms that can store valuable resources over time
• Describe how erosion and sedimentation redistribute Earth materials to form basins and river deposits
• Connect weathering, soil formation, and mineral release to ecosystems and groundwater+ Show more

Learning Objectives

• Explain how energy moves through trophic levels in an ecosystem.
• Describe why available energy decreases at each step of energy transfer.
• Evaluate how changes in producers can affect the entire community.

Learning Objectives

• Explain how inherited traits and alleles can influence survival and reproduction in specific environments
• Describe how natural selection changes allele frequencies at the population level
• Use examples such as camouflage and feeding efficiency to connect adaptations to fitness

Learning Objectives

• Explain how DNA, genes, and chromosomes relate to one another in cells
• Describe how genetic information is passed to offspring during cell division
• Use evidence from DNA and genes to predict how inherited traits can differ among individuals

Learning Objectives

• Explain what an ecological niche includes, including resources, space, and functional role in an ecosystem.
• Describe how feeding relationships and environmental tolerances affect competition and survival.
• Use niche concepts to predict how changes in environmental conditions can reorganize communities.

Learning Objectives

• Explain how inherited variation, environmental pressures, and differential survival/reproduction drive natural selection
• Use the idea of fitness to predict how traits become more or less common over generations
• Describe how populations change through time and relate adaptation to current environmental conditions

Learning Objectives

• Explain the relationship between fitness, survival, and reproduction in a specific environment
• Describe how natural selection depends on both environmental conditions and heritable traits
• Analyze how changes in environment can change which traits increase fitness+ Show more

Learning Objectives

• Explain how temperature, pressure, moisture, and wind interact to produce weather patterns
• Describe how phase changes of water vapor contribute to cloud formation and precipitation
• Analyze how heat transfer methods (radiation, conduction, convection) drive large-scale atmospheric circulation

Learning Objectives

• Differentiate climate from weather using evidence from long-term atmospheric patterns
• Explain how latitude, sunlight angle, distance from water, circulation, elevation, and winds influence temperature and precipitation
• Analyze how climate controls ecosystem distribution and surface processes