Grade 9 Science Worksheets

Learning Objectives

• Understand different measures of dispersion such as variance, interquartile range, and range.
• Explain how distribution shape and variability influence confidence in statistical estimates.
• Interpret overlapping distributions and apply effect-size reasoning to compare hypotheses.+ Show more

Learning Objectives

• Understand basic components of ecosystems and how energy flows through them.
• Identify key biogeochemical cycles, especially the carbon and nitrogen cycles.
• Recognize the roles of organisms and abiotic factors in material recycling.+ Show more

Learning Objectives

• Compare mean, median, and mode and explain when each is appropriate for summarizing data.
• Describe how skew, outliers, and multimodality can affect central tendency measures.
• Justify a chosen summary statistic using assumptions about the data-generating process.

Learning Objectives

• Identify basic cell organelles such as nucleus, mitochondria, endoplasmic reticulum, and ribosomes.
• Understand the functions of different cell components and how they work together.
• Recognize how nucleic acid sequences influence protein structures and cellular functions.+ Show more

Learning Objectives

• Explain how the hypothalamus and thermoreceptors coordinate thermoregulation using feedback loops
• Describe how vasodilation, vasoconstriction, and sweating affect heat loss and heat gain
• Compare behavioral and metabolic responses (including shivering) during different environmental conditions

Learning Objectives

• Explain how energy transforms between forms while conserving total energy for a chosen system
• Describe how friction and air resistance convert mechanical energy into thermal energy
• Connect changes in temperature to motion through material behavior and density effects+ Show more

Learning Objectives

• Understand how wave speed relates to frequency and wavelength in different media.
• Identify the mathematical relationships governing wave properties.
• Explain how changes in frequency or wavelength affect wave propagation and dispersion.+ Show more

Learning Objectives

• Explain how positive and negative feedback help maintain stable internal conditions in narrow limits.
• Identify the roles of sensors, control centers, and effectors in a feedback loop.
• Compare rapid corrective responses to slower hormonal adjustments in terms of time and effect.

Learning Objectives

• Explain how explanatory models connect observable evidence to causal mechanisms within defined limits.
• Identify ways scientists refine models by adjusting assumptions, updating parameters, and revising relationships.
• Evaluate how new evidence changes a model and improves agreement with observations.+ Show more

Learning Objectives

• Define the greenhouse effect and identify the gases involved.
• Explain how greenhouse gases trap heat in the atmosphere.
• Recognize natural vs. human contributions to greenhouse gas levels.+ Show more

Learning Objectives

• Explain how an iteration loop uses test evidence to improve a design over multiple cycles
• Describe how changing variables (dimensions, materials, alignment, interactions) can affect outcomes
• Justify why reliability and safety margins often grow after repeated testing

Learning Objectives

• Understand the concept of power as the rate of energy transfer.
• Describe the difference between power and energy.
• Explore real-world examples of power in engineering applications.+ Show more

Learning Objectives

• Explain the pathway from brain neural inputs to hormone release in the neuroendocrine system
• Describe how anatomical interfaces (portal vessels and fenestrated capillaries) help control timing and hormone magnitude
• Connect neuroendocrine control to body functions such as metabolism, growth, reproduction, and stress responses

Learning Objectives

• Understand the principles of heat transfer including conduction, convection, and radiation.
• Calculate thermal energy transfer using specific heat capacity, mass, and temperature change.
• Explain sign conventions and energy flow principles in thermal systems.+ Show more

Learning Objectives

• Understand the key regulatory mechanisms in metabolism, including allosteric enzyme control, covalent modification, and compartment-specific regulation.
• Explain feedback inhibition and the hormonal signals that influence metabolic flux between catabolism and anabolism.
• Model how enzyme kinetics and substrate concentrations affect pathway rates.+ Show more

Learning Objectives

• Understand the role of enzymes as biological catalysts and how they lower activation energy.
• Describe the structural features of enzymes that influence substrate specificity and catalysis.
• Explain the functions of cofactors and coenzymes in enzyme activity.+ Show more

Learning Objectives

• Understand what fossils are and how they form
• Identify different types of fossils and their significance
• Learn how fossils help scientists study the past+ Show more

Learning Objectives

• Explain how mechanical energy changes between gravitational potential energy and kinetic energy.
• Use the idea of energy conservation with non-conservative losses (like friction) to predict motion limits.
• Describe energy transfers during work interactions and how dissipation affects achievable speeds and heights.

Learning Objectives

• Understand how organelle systems coordinate to support cell functions.
• Identify the roles of various organelles in metabolism and maintenance.
• Explain the significance of organelle interactions in growth and responses to environmental changes.+ Show more

Learning Objectives

• Understand different types of plate boundaries
• Identify features associated with each boundary type
• Explain the processes driving plate movements+ Show more

Learning Objectives

• Define genetic drift and explain its role in evolution.
• Identify the effects of genetic drift in small populations.
• Differentiate between genetic drift and natural selection.+ Show more

Learning Objectives

• Understand the basic process of photosynthesis and its importance to plants.
• Identify the key inputs and outputs of photosynthesis.
• Describe the roles of light, water, and carbon dioxide in photosynthesis.+ Show more

Learning Objectives

• Explain how wind and solar variability affects grid operation and dispatch planning.
• Describe how energy storage and grid balancing help maintain reliable electricity supply.
• Evaluate the environmental and economic trade-offs of integrating renewables in a regional grid.

Learning Objectives

• Identify the main sources of genetic variation such as mutation, recombination, gene flow, and chromosomal rearrangements.
• Explain how mutation rates and types influence genetic diversity.
• Describe practical examples of genetic variation impacts, including introduced species and hybridization.+ Show more

Learning Objectives

• Define ecosystem services and identify their main types.
• Explain the importance of biodiversity in delivering ecosystem services.
• Describe how human activities impact ecosystem functions and services.+ Show more

Learning Objectives

• Define evolution in terms of changes in heritable traits and allele frequencies over generations
• Explain how natural selection and genetic drift affect allele frequencies
• Describe how mutation and gene flow introduce variation and transfer alleles between populations+ Show more

Learning Objectives

• Compare physical and chemical changes using ideas of energy transfer and system–surroundings interactions.
• Explain how endothermic and exothermic processes relate to observed temperature changes.
• Connect energy transfer to particle behavior in phase changes and to bond rearrangements in chemical changes.

Learning Objectives

• Explain how light energy is converted into chemical energy during the light reactions of photosynthesis.
• Describe the roles of thylakoid membranes, photosystems, and electron carriers in photochemistry.
• Relate electron flow to proton gradient formation and ATP synthase activity.+ Show more

Learning Objectives

• Understand the difference between series and parallel circuits
• Identify characteristics of each circuit type
• Apply basic principles to distinguish circuit configurations

Learning Objectives

• Describe how atomic number relates to an element's position on the periodic table.
• Explain the significance of periodic trends such as reactivity, ion charge, and bonding tendencies.
• Identify patterns in element properties across periods and groups.+ Show more

Learning Objectives

• Understand the basic concepts of Mendelian inheritance, including dominant and recessive alleles.
• Interpret Punnett squares to predict genotype and phenotype ratios in monohybrid and dihybrid crosses.
• Analyze pedigree charts to determine inheritance patterns.+ Show more

Learning Objectives

• Differentiate homogeneous and heterogeneous mixtures using particle distribution and appearance
• Describe how physical properties (particle size, solubility, boiling point, density, magnetism) enable separation
• Explain why separation methods preserve the chemical identity of mixture components

Learning Objectives

• Explain how electrical systems lose energy through resistive losses and other mechanisms.
• Describe how power factor and proper device selection affect system efficiency.
• Compare design choices that reduce wasted energy, cost, and environmental impact.

Learning Objectives

• Explain how an electric motor converts electrical energy into mechanical work using electromagnetic effects.
• Describe how a generator produces electrical energy through electromagnetic induction.
• Match motor and generator performance characteristics to real-world load needs in local systems.

Learning Objectives

• Use quantifiable indicators (such as extraction rates, groundwater levels, and land-use change) to describe human impacts on Earth systems.
• Interpret resource trends by comparing datasets and identifying possible system thresholds and natural variability.
• Evaluate consequences of resource extraction, including subsidence, soil erosion, and altered sediment budgets, using evidence.

Learning Objectives

• Explain how glycolysis, the citric acid cycle, and the electron transport chain convert energy into ATP in mitochondria.
• Describe how energy coupling links electron flow and proton gradients to ATP synthase activity.
• Use quantitative and empirical ideas (reactants/products, oxygen consumption, ATP yield) to interpret metabolic flux and energy balance.

Learning Objectives

• Explain the difference between kinetic energy and potential energy using real-world examples.
• Relate kinetic energy to speed and potential (gravitational) energy to height above a reference level.
• Describe how energy transfers between kinetic and potential during motion such as a roller coaster ride.+ Show more

Learning Objectives

• Explain how the relative positions of the Sun, Moon, and Earth produce the Moon’s predictable phase cycle.
• Describe the conditions required for solar and lunar eclipses and why eclipses do not occur every month.
• Connect the Moon’s orbital tilt and viewing geometry to eclipse frequency and visibility.

Learning Objectives

• Understand the concept of force and how it affects object motion.
• Identify different types of forces, including contact and non-contact forces.
• Recognize real-world examples of forces in Alberta settings.+ Show more

Learning Objectives

• Understand the hierarchical organization from cells to organism systems.
• Describe how tissues, organs, and organ systems interact for physiological functions.
• Explain the specialization of tissues and organs in maintaining organism health.+ Show more

Learning Objectives

• Understand the concept of systems thinking and its importance in science.
• Identify components and interactions within a system.
• Recognize how changes in one part of a system can affect the whole.+ Show more

Learning Objectives

• Explain how climate variability can change weather patterns over months to years.
• Describe how ocean-atmosphere interactions such as El Niño and La Niña redistribute heat and moisture.
• Distinguish short-term natural variability from longer-term climate trends using evidence across timescales.

Learning Objectives

• Explain how pulmonary ventilation and gas exchange support oxygen delivery to cells
• Describe how the cardiovascular system transports gases and helps regulate blood pH
• Evaluate how chemoreceptor feedback coordinates breathing and circulation during changing metabolic demand

Learning Objectives

• Identify the main idea and key supporting details about biological classification.
• Explain how classification helps scientists communicate about living organisms.

Learning Objectives

• Understand the concept of negative and positive feedback in physiological processes.
• Identify examples of feedback mechanisms involved in thermoregulation, blood glucose control, and osmoregulation.
• Explain the roles of sensors, effectors, and set points in maintaining internal stability.+ Show more

Learning Objectives

• Explain the concept of negative and positive feedback in physiological regulation.
• Describe how feedback loops maintain internal stability within narrow limits.
• Identify mechanisms of thermoregulation and blood glucose control involving hormonal feedback.+ Show more

Learning Objectives

• Use quantitative measurements and model predictions to evaluate claims about motion, forces, energy transfer, or wave behavior.
• Identify how models summarize patterns and state the assumptions or constraints behind them.
• Compare competing explanations by how well they match data and follow expected relationships.

Learning Objectives

• Explain how conservation of matter relates to balancing chemical equations
• Interpret coefficients as particle (atom/molecule) counts in a chemical reaction
• Balance simple chemical equations by matching the number of each element on both sides