Grade 9 Science Worksheets

Learning Objectives

• Interpret diagrams to explain design choices
• Analyze data summaries to evaluate design performance
• Provide reasoning connecting test outcomes to design decisions

Learning Objectives

• Explain how the Moon’s position in its orbit changes which part of its sunlit half we see from Earth.
• Describe the geometry of solar and lunar eclipses and why they require near alignment of the Sun, Earth, and Moon.
• Use the concept of orbital tilt and nodes to predict when eclipses are more likely to occur.

Learning Objectives

• Understand the concept of net force and how it affects motion
• Identify net force in various simple situations
• Explain how different forces combine to produce acceleration+ Show more

Learning Objectives

• Identify series and parallel arrangements in electrical circuits.
• Explain how series and parallel circuits differ in current and voltage.
• Simplify complex circuits by reducing series and parallel components.+ Show more

Learning Objectives

• Interpret speed-time and distance-time data to infer acceleration and its direction.
• Use changes in speed over equal time intervals to determine whether acceleration is roughly constant or changing.
• Explain how the shape or slope of data curves relates to acceleration.

Learning Objectives

• Identify claims, evidence, and reasoning within scientific texts
• Analyze how coherence and relevance strengthen scientific arguments
• Evaluate the role of quantitative evidence and model comparisons+ Show more

Learning Objectives

• Explain how the fossil record supports gradual evolutionary change over time.
• Use evidence from homologous structures and genetic data to infer shared ancestry.
• Differentiate homologous traits from analogous traits caused by convergent evolution.

Learning Objectives

• Describe mechanisms of transmembrane movement including passive diffusion, facilitated transport, and active transport.
• Explain the role of membrane composition and transporters in establishing electrochemical gradients and osmotic balance.
• Use quantitative reasoning about concentration differences and membrane permeability to connect transport processes to cellular homeostasis.+ Show more

Learning Objectives

• Understand the role of hormones in regulating physiological processes.
• Identify feedback loops involved in glucose homeostasis.
• Describe hormone synthesis, transport, and cellular effects.+ Show more

Learning Objectives

• Understand the concept of ionic bonding and electron transfer
• Identify properties of ionic compounds versus covalent compounds
• Recognize examples of ionic bonds in real-world materials+ Show more

Learning Objectives

• Explain how forces can change an object’s state of motion through acceleration and changes in velocity.
• Differentiate between contact forces and field forces and give real-world examples of each.
• Use vector ideas (magnitude and direction) to describe forces and predict how multiple forces combine as a net force.+ Show more

Learning Objectives

• Understand how energy flows through food chains in ecosystems.
• Identify the different roles of producers, consumers, and decomposers.
• Describe how matter cycles through living organisms and the environment.+ Show more

Learning Objectives

• Use probability and Punnett-square reasoning to predict trait frequencies across multiple generations.
• Explain how dominant and recessive alleles affect offspring phenotypes even when carriers are not visibly different.
• Interpret family patterns to support or question genetic predictions.

Learning Objectives

• Explain the concepts of negative and positive feedback in maintaining internal stability.
• Describe physiological examples of feedback mechanisms such as thermoregulation, blood glucose control, and osmoregulation.
• Identify the components of feedback loops, including set points, sensors, effectors, and response timing.+ Show more

Learning Objectives

• Define power as the rate of energy transfer or work per unit time.
• Calculate average and instantaneous power in mechanical contexts.
• Understand the concept of mechanical efficiency and how it relates to energy losses.+ Show more

Learning Objectives

• Understand the role of cell membranes in regulating transport.
• Identify different functions of cellular components involved in maintaining internal balance.
• Explain how cells respond to environmental changes through structure and function.

Learning Objectives

• Explain the differences between P waves, S waves, body waves, and surface waves and how they propagate through Earth.
• Use seismic travel-time ideas (including S–P time) to relate wave observations to Earth structure and epicentre location.
• Interpret earthquake focal mechanisms to infer fault type and stress orientation.+ Show more

Learning Objectives

• Explain how DNA structure (double helix and base pairing) supports accurate heredity.
• Describe how chromosomes organize genes using loci and how karyotypes display chromosome features.
• Compare nuclear DNA and organelle genomes (e.g., mitochondrial DNA) in terms of packaging and inheritance.

Learning Objectives

• Identify the structure and function of DNA
• Explain what genes are and where they are located
• Describe how chromosomes carry genetic information

Learning Objectives

• Recognize the concept of iteration in the design process
• Understand how test evidence guides design improvements
• Identify examples of refining a product through repeated testing+ Show more

Learning Objectives

• Explain how human actions can affect air, water, and land systems through identifiable mechanisms of harm.
• Evaluate environmental solutions by comparing benefits, side effects, and feasibility across interconnected systems.
• Use scientific reasoning to weigh evidence and uncertainty when predicting environmental outcomes.

Learning Objectives

• Evaluate biotechnological proposals by balancing potential benefits and potential risks to individuals and communities.
• Explain ethical concerns related to genetic privacy, informed consent, off-target genome-editing effects, and ecological consequences.
• Identify how equitable access and public engagement influence regulation and policy decisions for biotechnology.

Learning Objectives

• Identify different sources of energy that influence Earth's processes.
• Describe how energy is transferred through conduction, convection, and radiation.
• Understand the role of internal heat and radioactive decay in Earth's dynamics.

Learning Objectives

• Explain how water vapor condenses into clouds.
• Identify factors affecting cloud types and formation.
• Describe the role of humidity and atmospheric stability in weather patterns.

Learning Objectives

• Describe different passive transport processes such as diffusion, facilitated diffusion, and osmosis.
• Explain active transport mechanisms and their role in cell function.
• Identify different vesicular transport methods, including endocytosis and exocytosis.+ Show more

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

• Explain how land-use change, invasive species, pollution, and resource extraction can reduce biodiversity.
• Interpret evidence from real-world examples (deforestation, coral reef degradation, agricultural runoff) to evaluate ecosystem impacts.
• Describe trade-offs between conservation goals, provisioning services, and socioecological outcomes.

Learning Objectives

• Explain how DNA sequences guide the production of proteins through transcription and translation.
• Describe how protein structure affects protein function inside cells.
• Connect changes in DNA (genotype) to changes in cell behavior and observable traits (phenotype).

Learning Objectives

• Explain the particulate (particle) model of matter using particle motion, spacing, and collisions
• Use the particulate model to predict diffusion, pressure, and temperature changes in solids, liquids, and gases
• Relate everyday and Alberta examples (e.g., salt on roads, odour spread from farms) to particle-level processes

Learning Objectives

• Explain how stars are formed from gas and dust in space.
• Describe the process of nuclear fusion in stars.
• Identify the types of elements produced during a star's lifecycle.+ Show more

Learning Objectives

• Understand the types of natural records used as evidence for climate change.
• Differentiate between weather and climate and their influencing factors.
• Identify key indicators and feedback mechanisms in Earth's climate system.+ Show more

Learning Objectives

• Explain how air temperature differences and air pressure gradients drive atmospheric circulation.
• Describe how moisture changes through condensation and evaporation lead to clouds and precipitation.
• Connect heat transfer (radiation, conduction, convection) to local weather patterns and larger storm systems.

Learning Objectives

• Understand the structure and role of ATP in cellular energy transfer.
• Explain how hydrolysis of ATP releases energy for cellular activities.
• Describe the process of ATP regeneration through phosphorylation.+ Show more

Learning Objectives

• Explain how paleoclimate proxies (ice cores, tree rings, marine sediments, and speleothems) provide evidence of past climate conditions.
• Interpret proxy indicators such as isotopic ratios, growth increments, and microfossil assemblages to reconstruct past variability.
• Describe how age models and uncertainty help connect proxy records to climate patterns over time.

Learning Objectives

• Describe how different organelles coordinate to facilitate cellular functions.
• Explain the pathways of genetic information flow within a cell.
• Identify the roles of mitochondria, lysosomes, and the Golgi apparatus in maintaining cellular homeostasis.+ Show more

Learning Objectives

• Distinguish between models, explanations, and scientific theories in science
• Identify how evidence supports scientific ideas and how theories can be revised
• Apply vocabulary to interpret scenarios involving models and predictions+ Show more

Learning Objectives

• Understand the different systems involved in maintaining body temperature
• Identify physiological responses to cold and hot environments
• Explain how feedback loops regulate thermoregulation

Learning Objectives

• Understand the concept of moles and molar mass
• Calculate molar mass of elements and compounds
• Learn how mole ratios relate to balanced chemical equations+ Show more

Learning Objectives

• Explain how energy moves between trophic levels and why transfer efficiency differs among organisms.
• Interpret biomass trends to evaluate the effects of trophic transfers on producer and consumer populations.
• Use evidence such as nutrient concentrations and decomposition to describe how matter cycles continue in ecosystems.+ Show more

Learning Objectives

• Explain Newton’s First Law using the idea of inertia and the relationship between net external force and changes in motion.
• Distinguish between an object at rest and an object moving at constant velocity in terms of net external force.
• Identify examples of static and dynamic equilibrium where balanced forces produce no net change in motion.+ Show more

Learning Objectives

• Explain how friction and drag act as opposing forces to relative motion
• Analyze how friction and drag can change acceleration in real-world situations
• Relate friction to contact conditions and normal force, and drag to speed and fluid resistance

Learning Objectives

• Explain the relationship between net force, mass, and acceleration.
• Distinguish between mass and weight.
• Apply Newton's second law to real-world scenarios involving force and motion.

Learning Objectives

• Classify common chemical reactions (synthesis, decomposition, single displacement, double displacement, and combustion) using reactant–product patterns and observable clues.
• Predict likely products from balanced reaction-type patterns and explain why conservation of mass constrains what can happen.
• Connect reaction type to real-world outcomes, including safety and environmental impacts (e.g., burning fuels, reactivity, and salt formation).

Learning Objectives

• Understand different types of scientific models: mathematical, graphical, schematic, and computational.
• Evaluate criteria for selecting appropriate models based on fidelity, simplicity, and predictive ability.
• Interpret how models link to measurable observables and empirical evidence.+ Show more

Learning Objectives

• Interpret motion using position–time and velocity–time graphs, relating slopes to velocity and acceleration.
• Use constant-acceleration equations to predict displacement and velocity in one dimension.
• Connect graphical reasoning (slope and area) to quantitative kinematics for real scenarios.

Learning Objectives

• Interpret scientific evidence linking dietary choices to cellular and system-level health outcomes.
• Identify mechanisms by which nutrition influences chronic health conditions.
• Analyze epidemiological data to distinguish correlation from causation in health studies.+ Show more

Learning Objectives

• Explain how heritable variation and environmental pressures can change allele frequencies over generations.
• Identify and distinguish examples of directional, stabilizing, and disruptive selection.
• Use the concepts of fitness, inheritance, and differential survival to predict population-level change.

Learning Objectives

• Define Newton's Third Law of Motion
• Identify real-world examples of action-reaction forces
• Explain why forces in a pair act on different objects+ Show more