Grade 9 Science Worksheets

Learning Objectives

• Explain how changes in greenhouse gases can trigger climate feedbacks that amplify or reduce warming.
• Describe at least three feedback pathways involving water vapor, ice/snow albedo, and clouds.
• Use cause-and-effect reasoning to connect atmospheric processes to Earth’s energy balance (absorbed sunlight vs. outgoing infrared).

Learning Objectives

• Explain how lifting and cooling lead to condensation and cloud formation
• Interpret relative humidity as an indicator of proximity to saturation
• Describe how atmospheric stability and vertical motion influence cloud types and precipitation

Learning Objectives

• Explain how gravitational force from the Moon creates ocean tides on Earth.
• Describe how the changing Earth-Moon alignment produces predictable tidal cycles.
• Compare the role of solar gravity with lunar gravity in strengthening and weakening tides.+ Show more

Learning Objectives

• Explain how coefficients in chemical equations represent relative particle amounts
• Balance simple chemical equations using conservation of matter
• Interpret what a balanced equation implies about reactants and possible products+ Show more

Learning Objectives

• Explain how conservation of atoms and conservation of mass apply to chemical reactions.
• Use word descriptions to predict particle-level changes and possible product amounts.
• Interpret balanced chemical equations as evidence that atoms are neither created nor destroyed.+ Show more

Learning Objectives

• Explain how energy transforms between mechanical, thermal, electrical, and sound forms in real systems
• Apply the idea of energy conservation to a chosen system and identify where energy goes during transformations
• Describe how temperature changes can affect the behavior of materials and motion+ Show more

Learning Objectives

• Explain how forces change an object’s motion by causing acceleration and changing velocity
• Differentiate between contact forces and field forces and give relevant examples
• Describe how force direction and magnitude are represented using vectors

Learning Objectives

• Explain how friction and drag oppose relative motion and affect acceleration.
• Use the idea that friction depends on normal force and surface conditions.
• Describe how drag depends on an object’s speed and the surrounding fluid.+ Show more

Learning Objectives

• Identify and describe conduction, convection, and radiation as different modes of heat transfer
• Explain how particle motion, fluid motion, and electromagnetic waves relate to each heat transfer mode
• Apply heat transfer concepts to real-world situations involving everyday temperature change+ 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

• Explain how cellular organelles' structures support their specific functions.
• Describe how organism structures reflect their functional needs.
• Use models to connect physical features to biological roles.+ Show more

Learning Objectives

• Explain how acceleration is determined by the net force and the direction of that net force
• Predict how changing mass affects acceleration when the net force is constant
• Interpret real-world situations using net force (including multiple forces) and Newton’s Second Law

Learning Objectives

• Differentiate physical changes from chemical changes using observable evidence such as color, temperature, texture, and product formation
• Identify physical properties and chemical properties of matter and explain how they relate to observed behavior
• Predict whether a described process is likely physical or chemical based on evidence and particle-level reasoning+ Show more

Learning Objectives

• Explain power as the rate of energy transfer or work done over time
• Compare situations using the relationship between energy transferred and time
• Interpret everyday wattage ratings in terms of energy per second

Learning Objectives

• Understand the main components and functions of power distribution systems.
• Analyze how voltage transformation and feeder topology affect system reliability and capacity.
• Evaluate the environmental impacts and resilience considerations in power grid design.+ Show more

Learning Objectives

• Identify observable evidence that indicates a chemical reaction has formed new substances
• Explain how changes in atoms and bonding patterns connect to reaction evidence such as gas, precipitate, color, temperature, and odor
• Distinguish chemical changes from physical changes using evidence-based reasoning

Learning Objectives

• Explain Newton’s Third Law using the action–reaction model and identify force pairs acting on different objects.
• Predict the direction, magnitude relationship, and object involved for forces in common real-world interactions.
• Distinguish between forces on one body versus forces on two different bodies and explain why they do not cancel on a single object.+ Show more

Learning Objectives

• Describe the main sources of heritable genetic variation such as point mutations, chromosomal rearrangements, and recombination.
• Explain how mechanisms like crossing-over and independent assortment contribute to allelic and phenotypic diversity.
• Connect molecular changes to effects on gene expression, protein function, and trait variation at the population level.+ Show more

Learning Objectives

• Describe the basic principles of Mendelian inheritance, including dominance, segregation, and independent assortment.
• Use Punnett squares to predict genotype and phenotype ratios of monohybrid and dihybrid crosses.
• Interpret pedigree charts to analyze inheritance patterns.+ Show more

Learning Objectives

• Understand the molecular structure of DNA and how it enables inheritance.
• Describe the processes of DNA replication and chromosomal segregation during meiosis.
• Identify how heredity patterns are observed through karyotype analysis and pedigrees.+ Show more

Learning Objectives

• Explain the flow of energy through different trophic levels in ecosystems.
• Analyze the structure and organization of food webs and food chains.
• Calculate and interpret biomass pyramids and ecological efficiencies.+ Show more

Learning Objectives

• Explain the roles of producers and consumers in an ecosystem.
• Analyze how photosynthesis and cellular respiration transfer energy and cycle carbon and oxygen.
• Evaluate factors affecting net primary productivity and biomass accumulation.+ Show more

Learning Objectives

• Explain the principle of electromagnetic induction and how changing magnetic flux induces an electromotive force.
• Identify practical applications of electromagnetic induction in regional power systems, such as hydroelectric generators and transformers.
• Describe the relationship between flux change, induced voltage direction, and frequency in electromagnetic systems.+ Show more

Learning Objectives

• Understand the challenges of integrating wind and solar resources into the electrical grid.
• Identify mechanisms for grid balancing and storage needs related to renewable energy sources.
• Analyze the environmental and economic implications of renewable integration in regional power networks.

Learning Objectives

• Describe the origin and nature of Earth's magnetic field.
• Explain how declination varies regionally and affects navigation.
• Identify the technological applications of Earth's magnetism in surveying and environment monitoring.+ Show more

Learning Objectives

• Understand the key components of electrical safety standards and codes.
• Identify protective devices and their purposes in electrical installations.
• Interpret safety labels and environmental considerations related to electrical safety.+ Show more

Learning Objectives

• Understand the factors affecting energy efficiency in electrical systems, including resistive losses and power factor.
• Identify various strategies and devices used to improve system performance and reduce energy waste.
• Analyze the impact of inefficient energy systems on the environment and operational costs.+ Show more

Learning Objectives

• Understand how the slope of a displacement–time graph relates to velocity.
• Interpret the area under a velocity–time graph as displacement.
• Identify non-uniform acceleration patterns from curved graphs.+ Show more

Learning Objectives

• Understand the basic concepts of forces, including contact and non-contact forces.
• Identify and describe real-world examples of forces in Alberta settings.
• Apply qualitative reasoning to analyze opposing forces before numerical calculation.+ Show more

Learning Objectives

• Understand the principles of mechanical energy conservation and energy transfer mechanisms.
• Analyze real-world examples involving potential and kinetic energy conversions.
• Evaluate the impact of non-conservative forces, such as friction, on energy systems.+ Show more

Learning Objectives

• Explain how kinematic descriptions, force balances, and energy considerations integrate to analyze complex motion scenarios.
• Apply graphs, equations, and net-force reasoning to predict motion outcomes in transport contexts.
• Interpret combined physical principles in real-world Alberta transportation and recreational situations.

Learning Objectives

• Describe how objects move using scalar and vector measures such as speed, velocity, and acceleration.
• Explain the differences between speed, velocity, and acceleration with real-world examples.
• Apply unit conversions and sign conventions to analyze and compare motion in different regional contexts.+ Show more

Learning Objectives

• Explain how friction and aerodynamic drag oppose motion and convert mechanical energy into thermal energy.
• Describe the factors affecting friction on icy roads and gravel tracks.
• Identify the variables influencing aerodynamic drag on various structures.+ Show more

Learning Objectives

• Understand how to interpret displacement–time, velocity–time, and acceleration–time graphs.
• Learn how to determine physical quantities such as speed, acceleration, and displacement from graph slopes and areas.
• Identify curved segments in graphs that indicate changing acceleration.+ Show more

Learning Objectives

• Understand the concept of mechanical advantage and how it is expressed as a ratio.
• Calculate mechanical advantage for different machine types such as levers, pulleys, and wheel systems.
• Analyze trade-offs between force reduction and displacement increase in simple machines.+ Show more

Learning Objectives

• Understand the concept of net force as the vector sum of forces acting on an object.
• Apply principles of vector addition to analyze forces in practical scenarios.
• Evaluate the effects of opposing forces such as friction and air resistance on motion.+ Show more

Learning Objectives

• Describe the different types of simple machines and their functions.
• Explain how simple machines reduce effort and change the direction of force.
• Differentiate between ideal and actual mechanical advantage in systems involving simple machines.+ Show more

Learning Objectives

• Understand the concepts of power as the rate of energy transfer in various systems.
• Explain the meaning of efficiency in energy conversion and how it impacts system performance.
• Analyze real-world examples of power and efficiency in engineering applications like turbines, engines, and heating systems.+ Show more

Learning Objectives

• Understand Newton's three laws of motion and their practical implications.
• Identify real-world examples demonstrating Newtonian principles.
• Explain how forces influence motion in common regional contexts.+ Show more

Learning Objectives

• Explain the concept of work as energy transfer caused by a force acting through a distance.
• Describe how simple machines alter force, distance, and mechanical advantage in real-world Alberta contexts.
• Analyze the trade-offs between force reduction and distance increase in machine design and performance.

Learning Objectives

• Understand and apply constant-acceleration equations in various motion scenarios.
• Solve numerical problems involving displacement, velocity, acceleration, and time.
• Analyze real-world situations such as stopping distances and free fall using motion equations.+ Show more

Learning Objectives

• Understand the concept of relative motion and how velocities combine in different reference frames.
• Describe how observed speed and direction depend on the observer's frame of reference.
• Apply vector addition principles to various motion scenarios involving boats, trucks, and aircraft.+ Show more

Learning Objectives

• Understand the concept of adaptive radiation and its ecological significance.
• Identify key processes that drive diversification in species.
• Explain how ecological factors influence morphological and behavioral differentiation.+ Show more

Learning Objectives

• Understand the hierarchical structure of biological classification systems.
• Identify traditional and modern approaches to classifying living organisms.
• Compare morphological, developmental, and genetic data used in taxonomy.+ Show more

Learning Objectives

• Understand the fundamental mechanisms of evolution including natural selection, genetic drift, mutation, and gene flow.
• Explain how these mechanisms influence allele frequencies and lead to changes in populations over generations.
• Describe the long-term effects of evolution on traits and genetic diversity within species.

Learning Objectives

• Understand how DNA, RNA, and protein sequences provide insights into evolutionary relationships.
• Identify the significance of conserved genetic sequences and homologous genes in common ancestry.
• Explain how molecular clocks estimate divergence times between species.+ 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

• Understand the concept of natural selection and its role in evolution.
• Identify examples of natural selection in real-world scenarios.
• Differentiate between types of selection: directional, stabilizing, and disruptive.+ Show more