Grade 9 Science Worksheets

Learning Objectives

• Understand the greenhouse effect and the role of greenhouse gases in climate regulation.
• Identify natural and human sources of greenhouse gases.
• Explain how changes in atmospheric composition influence global temperatures.+ Show more

Learning Objectives

• Analyze how land-use change, invasive species, pollution, and resource extraction affect biodiversity and ecosystem functioning.
• Interpret empirical evidence from case-study examples to evaluate mitigation approaches.
• Explain trade-offs between conservation goals and provisioning services in real socioecological systems.

Learning Objectives

• Compare physical, cellular, and biochemical immune barriers with adaptive immune responses.
• Explain how antigen recognition leads to inflammation, antibody production, and immune memory.
• Describe how stress, nutrition, and environmental exposures can alter immune competence and increase disease risk.

Learning Objectives

• Explain how surface currents and deeper thermohaline circulation redistribute heat in the ocean.
• Describe how features like gyres and upwelling influence coastal conditions and carbon uptake.
• Evaluate how changes in ocean circulation can affect regional climates and extreme weather through feedbacks.

Learning Objectives

• Explain how Earth’s climate is shaped by interactions among the atmosphere, hydrosphere, cryosphere, lithosphere, and biosphere.
• Describe how solar energy and internal heat create an energy balance that influences long-term climate averages.
• Identify how external forcings and natural variability (aerosols, greenhouse gases, ocean circulation, and land surface properties) affect temperature, precipitation, and extremes.

Learning Objectives

• Compare key structural features of prokaryotic (bacteria and archaea) cells with eukaryotic cells.
• Identify how DNA arrangement differs between prokaryotes and eukaryotes.
• Explain why compartmentalization and organelles matter for cell function.

Learning Objectives

• Explain how uncertainty comes from limitations in data collection and from conditions that differ from an intended model.
• Identify common error sources such as instrument limits, human judgment, environmental variation, and oversimplified assumptions.
• Use uncertainty to judge whether results meaningfully differ from each other or could be due to chance and error.

Learning Objectives

• Understand the components and processes involved in biogeochemical cycles.
• Identify how elements like carbon, nitrogen, and phosphorus move through Earth's spheres.
• Explain the role of biological processes such as photosynthesis, decomposition, and nitrogen fixation.+ Show more

Learning Objectives

• Explain how impulse and the force–time relationship affect peak force and injury risk during collisions.
• Interpret force–time graphs to compare mitigation strategies that extend collision time and reduce peak acceleration.
• Evaluate how material deformation and energy dissipation (e.g., crumple zones, airbags, helmets) help protect macroscopic objects and people.

Learning Objectives

• Understand the principle of conservation of mass in chemical reactions.
• Identify real-world applications of mass conservation in environmental and industrial contexts.
• Explain how mass remains constant in closed systems during chemical processes.+ Show more

Learning Objectives

• Interpret microscopy images using resolution limits, scale bars, and contrast features
• Use staining and fluorescence patterns to infer specific cellular structures or molecules
• Evaluate image sets over time while accounting for artifacts and measurement errors

Learning Objectives

• Explain how chemical reactions conserve matter by rearranging atoms rather than creating or destroying them
• Describe how energy transfer (absorbed or released) affects reaction outcomes without violating atom conservation
• Use exothermic and endothermic examples to interpret changes in temperature and heat flow

Learning Objectives

• Describe how different electrical components behave under applied voltage and current, including linear and nonlinear effects.
• Explain how temperature changes affect component resistance and how this impacts real equipment performance.
• Connect component behaviors to power ratings and safe operating limits in circuits.

Learning Objectives

• Explain how mass affects acceleration when the net force is fixed using the idea of an inverse relationship.
• Distinguish inertial mass from gravitational effects and relate each to force, acceleration, and weight.
• Use F = ma to predict acceleration changes when mass or net force changes.

Learning Objectives

• Understand the functions of key organelles involved in cellular energy production and processing.
• Identify the roles of mitochondria, ribosomes, rough endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes.
• Explain how organelles work together to support cell activity and metabolism.

Learning Objectives

• Explain how balancing chemical equations enforces conservation of atoms and mass.
• Use coefficients to ensure the number of each type of atom matches on both sides of a reaction.
• Interpret balanced equations to predict relative reactant and product amounts.

Learning Objectives

• Explain how chemical reactions conserve matter by rearranging atoms rather than destroying them
• Describe how energy transfer during reactions is reflected in temperature and heat changes
• Differentiate exothermic and endothermic reactions using both energy and product outcomes

Learning Objectives

• Explain the meaning of power as the rate of energy transfer in mechanical systems.
• Compare efficiency using useful output energy versus input energy.
• Describe how real-world energy losses reduce efficiency and affect machine performance.+ Show more

Learning Objectives

• Understand the ethical issues related to genetic privacy and consent.
• Analyze societal impacts of genetic technologies such as GMOs and biobanking.
• Evaluate different stakeholder responsibilities in genetic science.+ Show more

Learning Objectives

• Describe how the Earth’s magnetic field is related to navigation tools like compasses and to dip and declination angles.
• Explain how regional magnetic variation affects map-and-compass use and surveying in Alberta.
• Connect auroral displays to magnetism and charged particles in Earth’s upper atmosphere.

Learning Objectives

• Explain how chemical reactions involve changes in potential and kinetic energy.
• Differentiate endothermic and exothermic reactions using energy and bond ideas.
• Interpret simple energy diagrams and relate them to observable temperature changes.+ Show more

Learning Objectives

• Understand different lines of evidence supporting evolutionary relationships.
• Identify how fossil, anatomical, and molecular data contribute to understanding biodiversity over time.
• Compare and evaluate various types of evidence used in evolutionary studies.+ Show more

Learning Objectives

• Explain how membrane-bound organelles specialize to carry out distinct cellular functions in eukaryotic cells.
• Describe the roles of mitochondria, ribosomes, rough endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes in metabolism and transport.
• Connect organelle specialization to efficiency and coordination of energy transfer and macromolecule processing.

Learning Objectives

• Use VSEPR electron-pair repulsion to predict the 3D shape of common molecules.
• Connect molecular geometry to polarity and intermolecular forces.
• Relate molecular shape to macroscopic properties such as boiling point and solubility.

Learning Objectives

• Understand the structure and function of genes as segments of DNA that encode proteins.
• Describe the processes of transcription and translation in protein synthesis.
• Explain how gene regulation influences phenotype and observable traits.+ Show more

Learning Objectives

• Understand the key tradeoffs involved in digital and analog transmission systems.
• Identify the impact of bandwidth constraints, noise, and error correction on communication quality.
• Analyze case studies involving bandwidth-limited radio channels and high-capacity fiber optic systems.+ Show more

Learning Objectives

• Use balanced chemical equations and conservation of mass to relate reactants and products quantitatively.
• Convert between moles, mass, and particle counts using molar masses and Avogadro’s number.
• Determine the limiting reagent and predict theoretical yield from stoichiometric ratios.

Learning Objectives

• Understand the concept of biodiversity and its importance in ecosystems
• Identify different types of biodiversity: genetic, species, and ecosystem diversity
• Recognize how environmental changes can impact biodiversity+ Show more

Learning Objectives

• Explain the biochemical pathways involved in cellular respiration, including glycolysis, citric acid cycle, and electron transport chain.
• Describe how ATP is produced and utilized in energy coupling within cells.
• Relate the functions of mitochondria and chloroplasts to metabolic processes like respiration and photosynthesis.+ Show more

Learning Objectives

• Understand the concept of water reservoirs in the water cycle
• Identify the main reservoirs for carbon and water
• Explain how reservoirs interact and affect climate and environmental processes+ Show more

Learning Objectives

• Explain how conservation of mass relates to measurable changes during chemical reactions within a defined system
• Distinguish between open and closed systems and predict how gas escape can affect measured mass
• Identify measurement factors (buoyancy and instrument sensitivity) that can change readings without changing total atomic conservation

Learning Objectives

• Use specific heat capacity, mass, and temperature change to calculate heat transfer.
• Apply sign conventions for heat flow into or out of a system.
• Distinguish conduction, convection, and radiation in terms of how energy is transferred.

Learning Objectives

• Explain the four types of ecosystem services and how ecosystems support human well-being.
• Describe how biodiversity helps maintain ecosystem services such as pollination, water purification, nutrient cycling, and carbon sequestration.
• Analyze how land-use change, pollution, and climate shifts can reduce ecosystem service capacity and distribution.

Learning Objectives

• Explain how urbanization, deforestation, agriculture, and infrastructure change watershed processes.
• Connect watershed changes to effects on runoff, sediment load, nutrient flux, groundwater recharge, and channel form.
• Use measurement indicators such as discharge and turbidity to infer watershed impacts and support integrated water management.

Learning Objectives

• Explain how Earth’s axial tilt affects the angle of sunlight and seasonal conditions in each hemisphere.
• Describe how Earth’s orbit around the Sun changes day length and sunlight duration over the year.
• Connect Sun–Earth geometry to seasonal temperature patterns and broader environmental changes.+ Show more

Learning Objectives

• Explain how multiple lines of evidence (fossils, anatomy, and molecules) support evolutionary relationships.
• Describe how homologous and analogous structures provide different clues about shared ancestry versus convergent evolution.
• Use fossil sequences and molecular comparisons to infer patterns of descent with modification and timing of divergence.

Learning Objectives

• Explain how the phospholipid bilayer creates a selective barrier using hydrophobic and hydrophilic regions.
• Describe how integral and peripheral proteins support transport, signaling, and structure in membranes.
• Connect membrane fluidity and selective permeability to cholesterol and the fluid mosaic model.

Learning Objectives

• Explain how insulin and glucagon respond to changes in blood glucose.
• Describe how the liver, muscle, and adipose tissue help maintain blood glucose homeostasis.
• Compare how feeding and fasting affect glucose uptake, storage, and release.

Learning Objectives

• Define force and its role in motion
• Identify different types of forces, including contact and non-contact forces
• Understand how forces act in real-world Alberta settings such as icy roads and suspended cables+ Show more

Learning Objectives

• Explain how net external force determines changes in motion using Newton’s Second Law.
• Represent forces on objects with free-body reasoning and conceptual force diagrams.
• Calculate net force and predict acceleration for contact and field forces in simple systems.+ Show more

Learning Objectives

• Identify and describe key lines of evidence supporting evolution, including fossil records, comparative anatomy, and molecular sequences.
• Explain how biogeography and radiometric dating contribute to understanding evolutionary timelines.
• Analyze examples of transitional fossils, homologous structures, and DNA sequence similarities among species.+ Show more

Learning Objectives

• Differentiate catabolic and anabolic pathways based on how they use energy and reducing power
• Explain how enzymes, feedback regulation, substrate availability, and compartmentalization affect metabolic flux
• Describe how integrated pathways balance biosynthesis and degradation to meet cellular energy demands

Learning Objectives

• Understand basic measures of data dispersion such as range and variance
• Interpret the shape of distributions and what it indicates about data variability
• Relate variability measures to data sampling and group heterogeneity+ Show more

Learning Objectives

• Explain how kinetic energy depends on an object's speed and motion
• Describe how gravitational potential energy depends on an object's height relative to a reference level
• Relate changes in height and speed to transfers between kinetic and potential energy

Learning Objectives

• Understand how geologic and atmospheric indicators are used to assess natural hazards.
• Identify different types of natural hazards and their triggering mechanisms.
• Analyze spatial patterns and feedbacks involved in hazard events.+ Show more

Learning Objectives

• Identify kinetic and potential energy in mechanical systems
• Understand how work, collisions, and friction transfer energy
• Explain how energy converts between forms during mechanical processes+ Show more

Learning Objectives

• Explain how cellular respiration converts glucose-derived energy into ATP through glycolysis, the citric acid cycle, and the electron transport chain.
• Connect organelle structure and location to metabolism in mitochondria and chloroplasts.
• Use quantitative information (reactants/products and oxygen consumption) to reason about metabolic activity and ATP yield.+ Show more

Learning Objectives

• Explain how energy flows through trophic levels in one direction in an ecosystem
• Distinguish producers, primary consumers, secondary consumers, and higher-level consumers
• Interpret how interconnected food webs differ from linear energy pathways+ Show more