Grade 9 Science Worksheets

Learning Objectives

• Distinguish random uncertainty from systematic uncertainty and describe how each affects measurements.
• Use standard deviation, standard error, and confidence intervals to quantify uncertainty in experimental results.
• Apply basic uncertainty propagation to compute uncertainties for sums, differences, and products/quotients.+ Show more

Learning Objectives

• Explain how variance, range, interquartile range (IQR), and coefficient of variation (CV) each describe variability in data.
• Interpret variability measures in terms of evidence strength when comparing groups or hypotheses.
• Connect quantified variability to sampling design and heterogeneity across subgroups.

Learning Objectives

• Explain how variation in developmental timing and gene regulation can produce different phenotypes from the same basic genetic toolkit
• Describe how regulatory networks and epigenetic modulation influence trait expression during development
• Use comparative developmental evidence to link genetic variation to morphological and physiological differences+ Show more

Learning Objectives

• Explain how trophic interactions and feedback loops can produce trophic cascades in ecosystems.
• Use key concepts like resilience, regime shifts, and thresholds to interpret ecosystem change.
• Connect material fluxes (nutrient cycling) and population dynamics to predict recovery after disturbance.

Learning Objectives

• Explain how ATP is produced and used through coupling between catabolic and anabolic reactions
• Compare electron transport chains in photosynthesis and cellular respiration and predict effects on ATP yield
• Use simplified quantitative stoichiometry and energy diagrams to connect molecular processes to cellular energy budgets+ Show more

Learning Objectives

• Use fossil sequences, comparative anatomy, biogeographic patterns, and molecular phylogenies to interpret descent with modification.
• Explain how mutation, natural selection, genetic drift, and gene flow can change allele frequencies and traits over short and long timescales.
• Apply evolutionary models to predict how populations respond to selective pressures in changing environments.

Learning Objectives

• Explain how chromosomal behavior during meiosis leads to Mendelian inheritance patterns.
• Use Punnett frameworks and probability to predict genotypic and phenotypic ratios.
• Analyze inheritance deviations such as incomplete dominance, codominance, linkage, and penetrance.

Learning Objectives

• Explain and distinguish passive diffusion, facilitated transport, and active transport in terms of energy use and membrane proteins.
• Use concentration gradients (and, when relevant, electrochemical gradients) to predict net movement of substances across membranes.
• Interpret how membrane composition and protein pumps affect osmotic balance and cellular homeostasis.

Learning Objectives

• Explain how enzymes can be regulated to coordinate metabolic pathways (allosteric control, covalent modification, and compartment-specific regulation).
• Describe how feedback inhibition and hormonal signaling shift metabolic flux between catabolism and anabolism.
• Use enzyme kinetics ideas and substrate concentration to predict how pathway rates change under different regulatory conditions.

Learning Objectives

• Explain how mitochondria, chloroplasts, endoplasmic reticulum, and lysosomes contribute to cellular maintenance and metabolism
• Connect organelle structure (cristae, thylakoid stacks, folded membranes) to specific functional outcomes such as ATP synthesis and light capture
• Use compartmentation and energy-flow ideas to describe how pathways are organized to optimize reaction rates and coordination of anabolic and catabolic processes

Learning Objectives

• Explain how glycolysis, the TCA (citric acid) cycle, and the electron transport chain connect to ATP production.
• Compare aerobic and anaerobic cellular outcomes using oxygen as the final electron acceptor and NAD+/NADH redox balance.
• Use reaction schemes and stoichiometry concepts to predict how substrate availability and enzyme regulation affect ATP yield.

Learning Objectives

• Distinguish P waves, S waves, and surface waves and describe how each propagates through Earth.
• Use travel-time concepts (especially S–P time) to explain how epicentres and earthquake magnitudes can be estimated.
• Connect focal mechanisms to fault types and stress orientations, relating rupture characteristics to seismic energy and hazard.+ Show more

Learning Objectives

• Explain how allele frequencies change under selection, genetic drift, migration, and mutation.
• Use Hardy-Weinberg equilibrium as a null model to predict allele and genotype frequencies in the absence of evolutionary forces.
• Interpret how selection coefficients, effective population size, bottlenecks, and founder effects can shift allele frequencies over time.+ Show more

Learning Objectives

• Explain how energy is transferred in the atmosphere and oceans through radiation, conduction, convection, and phase changes.
• Interpret global energy budget diagrams and flux tables to predict how differential heating drives circulation patterns.
• Connect energy partitioning to observable climate indicators such as surface temperature and sea surface temperature anomalies.

Learning Objectives

• Use a water-budget framework to relate precipitation, evapotranspiration, runoff, infiltration, and storage changes to streamflow variability.
• Interpret discharge hydrographs and connect changing flow to surface and subsurface water fluxes.
• Explain how groundwater level records and human withdrawals affect aquifer sustainability indicators.

Learning Objectives

• Explain how coupled quantitative models connect variables across the geosphere, hydrosphere, atmosphere, and biosphere.
• Use model structure and parameter sensitivity to interpret how changes affect multi-variable outcomes.
• Describe how uncertainty propagation (e.g., ensembles) improves the credibility of model projections.+ Show more

Learning Objectives

• Explain how sea surface temperature (SST) anomalies can influence atmospheric convection and wind patterns
• Describe ENSO-related teleconnections and how they can affect regional climate
• Use energy-budget and lag-correlation ideas to connect ocean heat content to atmospheric circulation responses

Learning Objectives

• Use indicators (extraction rates, groundwater levels, and land-use change metrics) to describe human impacts on Earth systems.
• Interpret resource trends while accounting for natural variability and possible system thresholds.
• Explain how resource pressures can lead to consequences such as subsidence, soil erosion, and altered sediment budgets.

Learning Objectives

• Explain how plate motions produce different types of plate boundaries and surface features.
• Interpret evidence for plate tectonics, including seafloor age patterns and paleomagnetic stripes.
• Connect patterns of earthquakes and volcano locations to divergent, convergent, and transform margins.

Learning Objectives

• Interpret seismic waveforms to identify likely P- and S-wave arrivals and describe what they indicate about earthquake depth and distance.
• Use travel-time ideas and epicenter mapping concepts to explain how seismographs help locate rupture zones.
• Connect patterns of seismicity and instrument-based evidence to tectonic environments and surface hazards such as tsunamis.

Learning Objectives

• Explain how the geosphere, hydrosphere, atmosphere, and biosphere are connected through matter and energy exchanges
• Use cause-and-effect reasoning and mass-balance thinking to interpret cross-domain environmental processes
• Describe how coupled sphere processes can produce observable patterns in time and space

Learning Objectives

• Explain how magma viscosity and volatile (gas) content influence eruptive style and energy
• Compare effusive shield volcanism and explosive stratovolcano behavior using tectonic setting and magma composition
• Use petrologic indicators and eruption chronologies to interpret past volcanic activity and landscape change+ Show more

Learning Objectives

• Decompose two-dimensional motion into perpendicular components and relate them to displacement and acceleration.
• Predict projectile outcomes (range, apex height, and time of flight) using independent x- and y-motion models.
• Translate between component equations and combined vector descriptions of motion.+ Show more

Learning Objectives

• Describe how cell membranes and organelles contribute to selective transport and compartmentalized function.
• Explain how the cytoskeleton provides structural support and helps position organelles within the cell.
• Analyze how changes in membrane composition or organelle integrity can affect diffusion, transport rates, and metabolic efficiency.

Learning Objectives

• Explain natural selection, including heritable traits, selective pressure, and fitness
• Use Alberta examples to describe how adaptations can improve survival or reproduction
• Compare natural selection with artificial selection and describe how each changes populations over generations+ Show more

Learning Objectives

• Describe how asexual reproduction works in processes such as binary fission, budding, spore formation, and vegetative propagation.
• Explain genetic and ecological consequences of producing clones.
• Compare when asexual strategies may be favored versus when sexual reproduction may be favored.

Learning Objectives

• Explain how mitosis supports growth and tissue repair by producing genetically identical somatic cells
• Describe how meiosis produces haploid gametes and how crossing over increases genetic variation
• Use chromosome-pairing and segregation concepts to predict outcomes of errors such as nondisjunction+ Show more

Learning Objectives

• Describe major genetic technologies used in biotechnology and how they differ in approach
• Explain how traits can be introduced or altered at both molecular and population scales
• Evaluate the need for regulatory oversight and monitoring using risk–benefit reasoning+ Show more

Learning Objectives

• Explain how the structure of DNA relates to how genetic information is copied and transmitted
• Describe how chromosomes, gene loci, and karyotypes help scientists organize genetic information
• Compare nuclear genomes with organelle genomes and predict how this can affect inheritance+ Show more

Learning Objectives

• Explain key ethical concerns in genetic technologies, including privacy, consent, and fair access to benefits
• Analyze trade-offs between innovation, public benefit, and potential harms in real-world genetic applications
• Describe how stakeholder responsibilities and policy can guide responsible development and use of genetic science+ Show more

Learning Objectives

• Explain how genes (DNA segments) determine protein structure and function
• Describe transcription and translation as processes that link DNA to protein production
• Interpret how promoter and regulatory elements control gene expression and phenotype+ Show more

Learning Objectives

• Explain how fertilization leads to zygote formation and early developmental stages.
• Compare internal and external fertilization using specific ecological examples.
• Describe how temperature, moisture, and habitat quality influence embryonic development and reproductive success.+ Show more

Learning Objectives

• Explain major sources of genetic variation, including mutation, recombination, gene flow, and chromosomal rearrangements
• Describe how each variation source can increase or decrease genetic diversity within a population
• Use examples of introduced species and managed fisheries to predict changes in gene pools+ Show more

Learning Objectives

• Analyze how sexual and asexual reproduction affect genetic variation in breeding programs
• Explain how inheritance of traits can follow Mendelian patterns and how chromosomes relate to inheritance
• Evaluate how selection changes allele frequencies and adaptation outcomes over time+ Show more

Learning Objectives

• Explain how dominant and recessive alleles influence genotype and phenotype in single-gene traits.
• Use simple Punnett square logic to predict genotype and phenotype ratios from allele crosses.
• Distinguish probability statements from guaranteed outcomes in inheritance predictions.

Learning Objectives

• Explain how allele frequencies and genotype frequencies relate in population genetics
• Use Hardy–Weinberg assumptions to predict when evolution is and is not occurring
• Describe how genetic drift, bottlenecks, founder effects, gene flow, and selection influence genetic diversity+ Show more

Learning Objectives

• Compare sexual and asexual reproduction in terms of genetic variation and offspring similarity
• Identify common mechanisms of asexual reproduction (budding, binary fission, vegetative cloning) and where they occur
• Analyze ecological trade-offs between population growth rate and genetic diversity

Learning Objectives

• Explain ecological, economic, and health risks and benefits associated with genetic technologies
• Use risk assessment ideas (hazard, likelihood, severity, uncertainty) to evaluate trade-offs
• Describe mitigation and monitoring strategies for long-term impacts+ Show more

Learning Objectives

• Explain atomic number and mass number and how they relate to elemental identity and isotopes
• Describe the roles of protons, neutrons, and electrons in atomic structure
• Use simplified electron-shell models to predict patterns in chemical behavior+ Show more

Learning Objectives

• Identify major carbon reservoirs and describe how carbon moves among the atmosphere, biosphere, oceans, and geosphere
• Explain key fluxes (photosynthesis, respiration, dissolution, sedimentation, and fossil fuel formation) in the carbon cycle
• Use basic ideas of residence time and budget perturbations to interpret how human emissions affect natural carbon pathways+ Show more

Learning Objectives

• Describe how sex chromosomes (X and Y) influence inheritance patterns of sex-linked traits
• Explain how hemizygosity and dosage compensation affect the expression and frequency of X-linked recessive conditions
• Interpret how sex-linked inheritance can change expectations for offspring in breeding and population genetics contexts

Learning Objectives

• Explain how Earth–Moon–Sun geometry produces lunar phases and why the Moon’s orbit causes changes over time
• Differentiate solar and lunar eclipses and describe the role of alignment near orbital nodes
• Distinguish partial, total, and annular eclipses and relate eclipse conditions to Moon–Earth distances and inclination

Learning Objectives

• Explain how balancing a chemical equation supports the conservation of mass and atoms
• Use coefficients to balance a chemical equation while keeping subscripts unchanged
• Interpret balanced equations to predict reactant and product proportions

Learning Objectives

• Explain how chemical reactions rearrange atoms to form new products while conserving mass
• Interpret balanced chemical equations to connect qualitative observations with quantitative particle counts
• Identify and compare common types of chemical reactions such as combustion, synthesis, and decomposition+ Show more

Learning Objectives

• Explain how element symbols represent atoms using one- or two-letter notation.
• Interpret chemical formulas by reading subscripts as numbers of atoms.
• Connect symbolic representations to the composition of common substances.+ Show more

Learning Objectives

• Identify observable evidence of chemical change, including colour shifts, gas evolution, precipitate formation, temperature change, and irreversibility.
• Use evidence to distinguish chemical changes from physical changes in environmental and industrial contexts.
• Explain how multiple evidence markers together strengthen the conclusion that a new substance formed.

Learning Objectives

• Distinguish ionic, covalent, and metallic bonding using electron interactions
• Predict properties of substances (e.g., melting point, conductivity, structure) based on bonding type
• Explain how bonding influences real-world materials and applications, including those relevant to Alberta

Learning Objectives

• Explain the conservation of mass principle using particle/atom reasoning
• Use mass conservation to interpret measurements in closed chemical systems
• Apply mass conservation to balance real-world material accounting (e.g., combustion and gas collection)