Grade 9 Science Worksheets

Learning Objectives

• Understand the factors that influence population sizes and dynamics.
• Describe mathematical models such as logistic growth and predator-prey cycles.
• Analyze the impact of human activities on carrying capacity and population resilience.+ Show more

Learning Objectives

• Explain how Earth’s axial tilt and orbit around the Sun produce seasonal changes
• Describe how the angle of sunlight and day length affect solar energy received at different latitudes
• Use the ideas of solstices and changing day length to predict patterns of seasons

Learning Objectives

• Explain the interactions among organisms and abiotic components that drive material cycling in ecosystems.
• Describe the processes of the carbon and nitrogen cycles and their importance.
• Analyze how perturbations like nutrient enrichment and invasive species affect ecosystem structure and function.+ Show more

Learning Objectives

• Explain how DNA stores genetic information and how genes are organized within chromosomes
• Describe how chromosomes are copied and passed to daughter cells during cell division
• Relate mutations in DNA to differences in inherited traits among individuals

Learning Objectives

• Understand how molar ratios relate reactants and products in balanced chemical equations.
• Apply conservation of mass to verify reaction equations and predict product quantities.
• Calculate limiting reagents and theoretical yields in chemical reactions.+ Show more

Learning Objectives

• Understand different mechanisms of energy transfer, including work, thermal transfer, and radiation.
• Identify observable effects of energy transfer such as temperature change and motion.
• Differentiate between stored energy and transferred energy in various processes.+ Show more

Learning Objectives

• Understand the inverse-square dependence of gravitational and electrostatic forces.
• Apply quantitative formulas to calculate magnitudes and directions of forces between masses and charges.
• Use vector analysis to determine net forces in systems of multiple objects.+ Show more

Learning Objectives

• Understand the principle of momentum conservation in isolated systems.
• Differentiate between elastic and inelastic collisions and their energy behaviors.
• Apply the conservation of momentum to analyze collision scenarios.+ Show more

Learning Objectives

• Understand how impulse relates force and time to changes in momentum.
• Explain why increasing stopping time reduces peak force during collisions.
• Describe the importance of direction in impulse and momentum change.+ Show more

Learning Objectives

• Understand how waves interact with boundaries and obstacles through reflection, refraction, transmission, and absorption.
• Describe the phenomena of diffraction and interference patterns in wave behavior.
• Explain how media properties affect wave speed and observed wave phenomena.+ Show more

Learning Objectives

• Understand how the periodic table links atomic number to chemical properties.
• Identify trends in element behavior across periods and groups.
• Explain how electron arrangements influence reactivity and bonding tendencies.+ Show more

Learning Objectives

• Understand how climate models simulate Earth's energy balance and atmospheric circulation.
• Identify different scenarios of greenhouse gas emissions and their projected impacts.
• Explain feedback mechanisms such as water vapor, ice cover, and clouds in climate projections.+ Show more

Learning Objectives

• Explain how the sun's uneven heating drives weather and atmospheric circulation.
• Describe the role of the hydrosphere in water vapor and cloud formation.
• Analyze how temperature, pressure, and energy transfer influence local weather patterns.+ Show more

Learning Objectives

• Understand different prototyping methods and their appropriate applications.
• Identify materials and tools used in various prototyping approaches.
• Evaluate testing protocols and performance metrics for prototypes.+ Show more

Learning Objectives

• Understand the relationships among displacement, velocity, and acceleration in straight-line motion.
• Interpret position–time and velocity–time graphs to analyze motion.
• Apply constant-acceleration equations to solve kinematic problems.+ Show more

Learning Objectives

• Describe how water, carbon, and nutrients cycle through Earth's systems.
• Explain the processes of evaporation, condensation, and precipitation in water cycling.
• Identify the interactions among atmosphere, oceans, organisms, and rocks in nutrient cycles.+ Show more

Learning Objectives

• Understand the principles governing planetary and satellite orbits based on Kepler's laws and Newton's law of gravitation.
• Explain the relationships between orbital period, semi-major axis, and escape velocity.
• Describe the effects of orbital resonance and perturbations on the stability of celestial bodies.

Learning Objectives

• Explain how biodiversity (species and genetic variation) supports ecosystem stability
• Analyze how environmental and human factors can change population sizes and species interactions
• Evaluate how biodiversity loss or gain affects ecosystem functions like resilience and nutrient/energy cycling

Learning Objectives

• Understand how to quantify random and systematic uncertainty using statistical descriptors.
• Learn to interpret standard deviation, standard error, and confidence intervals in data analysis.
• Apply basic error propagation methods to combined measurements and calculations.+ Show more

Learning Objectives

• Describe how atmospheric forcing influences geomorphic change and soil development.
• Identify and explain key surface process mechanisms such as chemical weathering, mass wasting, and sediment transport.
• Analyze examples of surface modification including alluvial fan formation and coastal erosion.+ Show more

Learning Objectives

• Understand the levels of biological organization from cells to organism systems.
• Describe how tissues and organs work together within organ systems.
• Explain the interactions between different systems like circulatory-respiratory, digestive-vascular, and nervous-endocrine.+ Show more

Learning Objectives

• Understand how ecological factors influence biodiversity within a community.
• Identify the roles of limiting resources and biotic interactions in population dynamics.
• Describe how changes in environmental factors can affect community composition.+ Show more

Learning Objectives

• Explain how alleles form genotypes and how genotype influences phenotype
• Describe dominance and recessiveness using allele combinations
• Analyze how multiple genes and allele variation can create continuous variation

Learning Objectives

• Analyze historical atmospheric CO2 records, land-use change, and temperature trends to understand human impact on climate.
• Identify key indicators such as the Keeling Curve and satellite data related to biosphere and hydrosphere changes.
• Evaluate the effects of fossil fuel combustion, deforestation, and urbanization on climate variables and ecosystems.+ Show more

Learning Objectives

• Understand how to apply systems and decision models for evaluating mitigation and adaptation strategies.
• Analyze trade-offs among environmental, economic, and social variables using scenario analysis.
• Evaluate policy instruments such as carbon pricing and land-use planning in balancing resilience and sustainability.+ Show more

Learning Objectives

• Understand the wave and photon descriptions of electromagnetic signals across the spectrum.
• Relate frequency to photon energy and interactions with matter.
• Identify characteristic phenomena such as atomic emission and absorption lines, and spectral attenuation.+ Show more

Learning Objectives

• Understand the molecular structure of DNA and its role in inheritance.
• Describe the processes of DNA replication and chromosomal segregation during meiosis.
• Explain how hereditary information is transmitted through gametes and zygote formation.+ Show more

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.
• Apply quantitative reasoning about concentration differences and membrane permeability to predict transport effects on cellular homeostasis.

Learning Objectives

• Distinguish between random uncertainty and systematic error in measurement results
• Explain why uncertainty supports scientific reasoning and fair comparison of data
• Use appropriate significant figures and uncertainty ranges when reporting measurement-based calculations+ Show more

Learning Objectives

• Identify the differences between series and parallel circuits in terms of current and voltage.
• Explain how components share current and voltage in series and parallel arrangements.
• Analyze the behavior of lighting strings versus household receptacle networks.+ Show more

Learning Objectives

• Understand the mathematical representations of heat transfer and internal energy changes.
• Apply specific heat capacity, mass, and temperature change formulas to calculate thermal energy transfer.
• Explain sign conventions for energy flow in heat transfer processes.+ Show more

Learning Objectives

• Understand how wave properties such as amplitude, frequency, wavelength, and phase describe wave behavior.
• Apply the wave speed formula (speed = frequency × wavelength) to analyze wave scenarios.
• Explain wave interference and standing waves using sinusoidal functions and superposition.+ Show more

Learning Objectives

• Understand the principles of scaling laws and how they relate to real-world models.
• Explain the concept of dimensional similarity and its importance in scientific modeling.
• Apply proportional reasoning to interpret data across different spatial and temporal scales.+ Show more

Learning Objectives

• Understand the distinction between power and energy in systems.
• Calculate energy demand over time considering efficiency and losses.
• Compare power ratings of household appliances and their energy consumption.+ Show more

Learning Objectives

• Explain the concept of work as energy transfer by a force over a distance.
• Describe how simple machines alter force, distance, and mechanical advantage.
• Identify real-world examples of levers, pulleys, and inclined ramps in Alberta contexts.+ Show more

Learning Objectives

• Understand the fundamental electrical quantities: current, voltage, and resistance.
• Identify the units and symbols used for electrical quantities.
• Interpret typical magnitudes of electrical parameters in regional systems.+ Show more

Learning Objectives

• Understand the origin and nature of magnetic fields from permanent magnets and moving charges.
• Identify the relationship between current direction and magnetic field orientation.
• Explain the concept of magnetic field lines and their significance in mapping magnetic fields.+ Show more

Learning Objectives

• Understand major genetic technologies such as selective breeding, hybridization, genetic modification, and gene editing.
• Identify applications of biotechnology in agriculture and livestock breeding.
• Describe mechanisms of trait introduction and alteration at molecular and population scales.+ Show more

Learning Objectives

• Understand mechanisms of asexual reproduction including binary fission, budding, spore formation, and vegetative propagation.
• Explain the genetic consequences of producing clones and their implications for biodiversity.
• Compare ecological contexts favoring asexual versus sexual reproduction for diversity.+ Show more

Learning Objectives

• Understand the basic principles of electric motors and generators.
• Identify different types of motors and their applications.
• Match performance characteristics of electromagnetic devices to load requirements.+ Show more

Learning Objectives

• Analyze how land-use change, invasive species, pollution, and resource extraction affect biodiversity and ecosystems.
• Interpret empirical data from case studies such as deforestation, coral reef degradation, and agricultural runoff.
• Evaluate trade-offs among conservation efforts, provisioning services, and socio-ecological outcomes.+ Show more

Learning Objectives

• Understand key ethical issues related to genetic technologies such as privacy, consent, and societal impacts.
• Identify different stakeholder responsibilities and perspectives in genetic science.
• Analyze trade-offs involved in innovation, public benefit, and potential harms in genetics.+ Show more

Learning Objectives

• Identify and describe the three main types of plate boundaries: divergent, convergent, and transform.
• Explain the geological processes and landforms associated with each boundary type.
• Analyze how the arrangement of plate boundaries influences regional seismic and volcanic activity.+ Show more

Learning Objectives

• Understand the processes involved in mountain-building, including crustal shortening, thickening, and metamorphism.
• Analyze how plate convergence influences surface topography and erosion patterns.
• Evaluate the impact of mountain-building episodes on regional climate and sediment delivery.+ Show more

Learning Objectives

• Understand the key concepts of energy efficiency in electrical systems.
• Identify common loss mechanisms and their impact on system performance.
• Evaluate strategies for improving system efficiency and reducing environmental impact.+ Show more

Learning Objectives

• Describe the processes involved in the rock cycle, including melting, crystallization, weathering, transport, deposition, and metamorphism.
• Explain how tectonic settings influence rock formation and transformation.
• Identify the types of rocks associated with different geological processes and settings.+ Show more

Learning Objectives

• Understand the principles of allele frequency and Hardy-Weinberg equilibrium.
• Explain the effects of genetic drift, bottlenecks, and founder effects on genetic diversity.
• Analyze how gene flow, selection, and stochastic processes influence evolution and conservation.+ Show more

Learning Objectives

• Analyze reproductive strategies and their impacts on genetic diversity.
• Trace inheritance mechanisms through chromosomes and Mendelian patterns.
• Evaluate the ecological and societal implications of breeding technologies.+ Show more