Grade 9 Science Worksheets

Learning Objectives

• Explain the three main ideas of cell theory and how they connect to living organisms
• Compare unicellular and multicellular organization in terms of structure and function
• Distinguish prokaryotic and eukaryotic cell features and relate structure to function+ Show more

Learning Objectives

• Explain how fitness relates to survival and reproduction in a specific environment
• Describe how natural selection depends on heritable traits and environmental conditions
• Analyze how changes in environment can change which traits increase fitness

Learning Objectives

• Explain the particle model using particle motion, spacing, and forces to describe solids, liquids, and gases.
• Relate temperature to average kinetic energy and predict how changes in temperature affect particle behavior.
• Use diffusion and gas pressure examples to connect microscopic particle events with macroscopic observations.

Learning Objectives

• Understand the concepts of surface and subsurface water flows within water-budget frameworks.
• Relate precipitation, evapotranspiration, and human withdrawals to streamflow and aquifer sustainability.
• Analyze how altered hydrologic fluxes influence geomorphic responses such as channel adjustment and sediment yield.+ Show more

Learning Objectives

• Explain how changes in surface reflectivity (albedo) can amplify or damp climate warming
• Use evidence from melting ice, vegetation shifts, and clouds to describe feedback loops
• Differentiate between positive feedback and negative feedback in Earth’s climate system+ Show more

Learning Objectives

• Interpret genetic data using genotype and phenotype frequencies to infer inheritance patterns
• Evaluate how molecular evidence (PCR markers, single nucleotide variants, sequencing reads) supports variant detection
• Use basic statistics and comparisons to expected ratios to reason about linkage, heterozygosity, and selection

Learning Objectives

• Understand different types of species interactions such as competition, predation, mutualism, parasitism, and herbivory.
• Recognize the roles of keystone species and ecosystem engineers in community structure.
• Analyze indirect effects in species interactions using network approaches.+ Show more

Learning Objectives

• Identify and describe the structures and functions of cells, tissues, organs, and organ systems.
• Understand how each level of organization supports specific life processes.
• Explain the importance of the nested organization in maintaining organism functions.

Learning Objectives

• Explain power as the rate of energy transfer or the rate of doing work.
• Use comparisons of time and energy to reason about differences in power.
• Apply power-and-rate ideas to everyday devices such as motors and appliances.

Learning Objectives

• Understand the basic structure of DNA and how it forms the double helix
• Identify the organization of chromosomes within the cell nucleus
• Explain how DNA is packaged into chromosomes and how this relates to heredity+ Show more

Learning Objectives

• Explain Newton’s Third Law using action–reaction pairs between two interacting objects.
• Distinguish between forces that act on different objects and why they do not cancel on a single object.
• Apply third-law reasoning to real-world examples such as rockets, walking, and pushing against walls.

Learning Objectives

• Identify common reaction types and their typical products
• Apply knowledge of reactant properties to predict reaction outcomes
• Understand how conservation of mass influences product formation+ Show more

Learning Objectives

• Understand various mechanisms of asexual reproduction
• Identify examples of asexual reproduction in different organisms
• Compare ecological conditions favoring asexual versus sexual reproduction+ Show more

Learning Objectives

• Explain how scientific models use observable evidence to represent causal mechanisms and predict outcomes.
• Identify how changing assumptions, parameters, or relationships can refine a model when evidence conflicts with predictions.
• Evaluate whether a model’s structure supports explanation within its valid limits.

Learning Objectives

• Differentiate the four major tissue types (epithelial, connective, muscle, and nervous) by structure and function.
• Explain how cell specialization within tissues supports organ-level capabilities.
• Use evidence from a scientific description to identify tissue type and predict likely function.

Learning Objectives

• Explain how innate and adaptive immune responses support homeostasis during infection and injury
• Describe how immune cells coordinate inflammation, clearance of damaged cells, and tissue repair
• Connect immune signaling with circulatory and endocrine system roles in maintaining internal stability+ Show more

Learning Objectives

• Understand the concept of natural selection and how it influences adaptation in populations.
• Identify examples of selective pressure and adaptive trade-offs in Alberta ecosystems.
• Differentiate between natural selection and artificial selection in shaping species traits.+ Show more

Learning Objectives

• Understand the concept of electric current, voltage, and resistance.
• Learn the units and symbols used for electrical quantities.
• Recognize typical magnitudes of electrical quantities in regional systems.+ Show more

Learning Objectives

• Differentiate ionic, covalent, and metallic bonding based on how electrons are involved
• Relate bonding type to physical properties such as melting point, conductivity, and structure
• Apply bonding concepts to real-world materials and environmental/industry examples

Learning Objectives

• Understand the particulate model of matter
• Identify differences in particle arrangement in solids, liquids, and gases
• Explain how particle behavior explains macroscopic phenomena

Learning Objectives

• Describe how energy and biomass move through trophic levels in a food web.
• Explain how ecological efficiency and trophic pyramids quantify energy loss.
• Interpret examples of top-down and bottom-up control in predator-prey and resource-limited systems.

Learning Objectives

• Interpret how temperature, humidity, dew point, wind, and pressure relate to observable weather patterns.
• Use short-term data trends and long-term averages to distinguish typical weather from changing climate conditions.
• Apply data relationships to predict likely storm or precipitation developments.

Learning Objectives

• Explain Newton’s third law using the idea of force pairs acting on different objects
• Predict how forces affect the motion of each interacting object using momentum and direction
• Identify correct examples of action–reaction forces in real-world situations

Learning Objectives

• Understand that atoms are neither created nor destroyed in chemical reactions
• Recognize that mass is conserved in a closed system
• Explain particle-level changes during chemical reactions+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Understand the concept of net force and how it affects motion
• Identify forces acting on objects in various scenarios
• Analyze the direction and magnitude of different forces+ Show more

Learning Objectives

• Locate where glycolysis occurs in the cell
• Identify the starting molecule and the early energy investment in glycolysis
• Recognize key products formed in the first stage of glycolysis

Learning Objectives

• Explain the structure of ATP and how its components relate to storing usable cellular energy.
• Describe how ATP hydrolysis releases energy and how that energy powers cellular work.
• Compare ATP regeneration by phosphorylation with ATP breakdown, focusing on energy transfer.+ Show more

Learning Objectives

• Explain that power describes the rate of energy transfer or work done per unit time.
• Use comparisons of time and energy to determine which situation has higher power.
• Interpret wattage labels and relate higher power to faster energy conversion in everyday systems.

Learning Objectives

• Explain how empirical evidence strengthens scientific claims using observable and measurable data.
• Identify how patterns in data guide scientific conclusions more than personal beliefs.
• Describe how evidence can corroborate, refine, or challenge earlier interpretations.+ Show more

Learning Objectives

• Explain how Earth’s axial tilt and its orbit around the Sun change the angle of sunlight
• Describe how these changes affect day length and solar heating at different latitudes
• Analyze how repeating Earth–Sun motions help determine seasonal timing

Learning Objectives

• Interpret acceleration from speed–time and distance–time data graphs
• Determine whether acceleration is approximately constant or changing based on graph shape and slope
• Explain how the sign of acceleration relates to whether speed is increasing or decreasing

Learning Objectives

• Explain how device parts work together as interacting components within defined boundaries.
• Map inputs, outputs, energy transfers, and material flow to predict device behavior.
• Evaluate how constraints and component compatibility affect reliability.

Learning Objectives

• Understand how air pollution impacts human health.
• Identify common air pollutants and their sources.
• Analyze the biological effects of pollutants on cellular processes.+ Show more

Learning Objectives

• Differentiate homogeneous and heterogeneous mixtures using particle-level evidence and everyday examples.
• Explain how distinct physical properties (particle size, solubility, boiling point, and density) allow separation without changing substances.
• Match separation methods (filtration, distillation, magnetic separation, decanting) to the property being used.

Learning Objectives

• Explain key ethical concerns related to genetic technologies, including privacy, consent, and fair access to benefits.
• Analyze trade-offs between scientific innovation and potential harms in real-world contexts such as crops, veterinary care, and biobanking.
• Evaluate how policy and public dialogue can support responsible decision-making across different stakeholder groups.

Learning Objectives

• Understand the processes of coastal erosion, sediment transport, and shoreline response to natural forces.
• Analyze the impact of sea-level change on coastal morphology and habitats.
• Evaluate the effects of human modifications and engineered structures on coastal systems.+ Show more

Learning Objectives

• Define and identify kinetic energy in various objects
• Define and identify potential energy, including gravitational potential energy
• Describe the relationship between work and energy transfer+ Show more

Learning Objectives

• Explain how tectonic plates move and describe key drivers of plate motion
• Differentiate convergent, divergent, and transform plate boundaries using evidence like earthquakes and landforms
• Interpret patterns of seismic activity by relating them to plate boundaries and plate motions

Learning Objectives

• Compare physical and chemical changes in terms of energy transfer and system–surroundings interactions.
• Explain how endothermic and exothermic processes relate to temperature changes.
• Use particle-bond ideas to describe what changes during physical vs. chemical processes.

Learning Objectives

• Explain how allele combinations in parents determine genotype outcomes in offspring using probability.
• Predict expected phenotype frequencies across multiple generations, accounting for dominant and recessive alleles.
• Use evidence from family patterns and cross results to justify trait-frequency predictions.

Learning Objectives

• Understand the interactions between land and water in ecosystem sustainability.
• Identify indicators of ecosystem resilience, nutrient cycling, and productivity.
• Evaluate land-use practices such as irrigation, terracing, and urban development on ecosystems.+ Show more

Learning Objectives

• Explain how comparing long-term weather measurements reveals climate variability.
• Differentiate variability from persistent climate change using evidence from temperature, precipitation, and atmospheric patterns.
• Interpret how large-scale ocean-atmosphere interactions (such as El Niño) affect regional weather statistics.

Learning Objectives

• Understand the ecological, economic, and health risks and benefits associated with genetic technologies.
• Evaluate potential consequences such as gene flow, resistance development, and market impacts.
• Analyze therapeutic opportunities and the importance of risk assessment and mitigation strategies.+ Show more

Learning Objectives

• Describe the main stages of stellar evolution from star formation to end states.
• Interpret Hertzsprung-Russell diagrams and spectral classifications of stars.
• Explain how supernova remnants contribute to element synthesis and enrichment of the interstellar medium.+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Explain how radiative balance, conduction, latent heat, and convection move energy through the atmosphere and oceans.
• Interpret global energy budget ideas using flux comparisons and diagrams to predict circulation patterns.
• Connect energy partitioning to observable climate indicators like surface temperature distributions and sea surface temperature anomalies.

Learning Objectives

• Explain how work depends on force and distance using the physics definition.
• Describe how simple machines change the magnitude or direction of an applied force.
• Evaluate input–output trade-offs and mechanical advantage in real contexts.