Grade 9 Science Worksheets

Learning Objectives

• Identify key ideas about how traits, heredity, and environment relate to natural selection
• Define science vocabulary in context, including population, trait, heritable variation, and allele

Learning Objectives

• Explain how particle arrangement affects bulk material properties
• Distinguish ionic lattices, covalent networks, and molecular solids
• Relate electrical conductivity to particle movement and structure+ Show more

Learning Objectives

• Explain how bond breaking and formation involve energy changes
• Distinguish between endothermic and exothermic chemical reactions
• Interpret energy diagrams showing reactant and product energy+ Show more

Learning Objectives

• Interpret balanced equations to determine stoichiometric mole ratios
• Calculate molar mass and reaction quantities from chemical formulas
• Identify limiting reagents in quantitative chemical reactions+ Show more

Learning Objectives

• Explain how reaction conditions influence rate, yield, and selectivity
• Analyze how temperature, pressure, and concentration shift equilibrium
• Describe how catalysts affect reaction rates and activation energy+ Show more

Learning Objectives

• Explain reaction rates using collision frequency and activation energy.
• Describe how temperature affects successful particle collisions.
• Explain how catalysts change reaction pathways and activation energy.+ Show more

Learning Objectives

• Identify the charges and roles of protons, neutrons, and electrons.
• Explain how electron configurations describe electron arrangements in atoms.
• Relate valence electrons to chemical behavior and reactivity.+ Show more

Learning Objectives

• Distinguish ionic, covalent, and metallic bonding using electron models
• Explain how bond energy and structure relate to substance properties
• Interpret Lewis structures and connect electron sharing with polarity+ Show more

Learning Objectives

• Understand the concept of relative motion and how reference frames affect observed velocity and displacement.
• Identify different scenarios illustrating relative motion, such as boats, vehicles, and aircraft in motion.
• Apply vector addition to analyze motions seen from different frames of reference.+ Show more

Learning Objectives

• Explain how biotechnology methods can change traits at the molecular level and how that can affect populations over generations.
• Compare selective breeding, hybridization, genetic modification, and gene editing by describing their main goal and how they introduce traits.
• Evaluate how uncertainty and risk–benefit trade-offs influence monitoring and regulation of agricultural biotechnology.

Learning Objectives

• Explain the causes of different lunar phases based on the positions of the Sun, Earth, and Moon.
• Identify and sequence the lunar phases in their proper order.
• Describe how lunar phases influence ocean tides and nocturnal illumination.+ Show more

Learning Objectives

• Describe how organelles interact to facilitate cellular functions such as protein trafficking and energy production.
• Explain the pathways of genetic information flow from nucleus to secretion mechanisms.
• Identify the roles of mitochondria, lysosomes, and the Golgi apparatus in maintaining cellular homeostasis.+ Show more

Learning Objectives

• Explain how a scientific model links evidence to causal mechanisms within limits
• Identify how new evidence can lead to refining a model by changing assumptions or relationships
• Compare predicted outcomes from a model with observations and describe how mismatches guide refinement+ Show more

Learning Objectives

• Explain how controls and variable identification improve cause-and-effect reasoning in scientific investigations
• Describe measurement and safety practices that support reliable, usable data
• Apply rules for designing procedures that allow clear interpretation of results

Learning Objectives

• Describe the processes involved in water and carbon cycles within Earth's systems.
• Explain how solar radiation and Earth's radiation balance influence climate and weather.
• Identify reservoirs and pathways of matter and energy in Earth's cycles.

Learning Objectives

• Explain how mechanical and chemical digestion prepare food for absorption.
• Describe how villi and microvilli increase surface area for nutrient transport.
• Compare how monosaccharides, amino acids, and lipids are absorbed and transported in the body.+ Show more

Learning Objectives

• Describe how component I–V characteristics differ for resistors and diodes
• Explain how temperature affects resistance in devices such as thermistors
• Connect power ratings and operating limits to safe, reliable circuit operation+ Show more

Learning Objectives

• Explain how cell membranes regulate transport of nutrients and wastes to support survival and growth.
• Describe how cells use energy to power chemical reactions involved in building and maintaining structures.
• Connect homeostasis and environmental responses to how models represent internal balance in cells.+ Show more

Learning Objectives

• Analyze how external and internal forces interact in a multi-body mechanical system using Newton’s laws and net force ideas
• Predict motion changes by determining the direction and magnitude of net force for linked components
• Use energy accounting to track where energy transfers and where it is dissipated (e.g., heat/sound) during collisions or mechanical events+ Show more

Learning Objectives

• Understand the purpose and importance of balancing chemical equations.
• Learn how to correctly balance chemical equations by adjusting coefficients.
• Identify the roles of coefficients and state symbols in representing reactions.+ Show more

Learning Objectives

• Understand the apparent daily motion of the Sun across the sky caused by Earth's rotation.
• Explain how Earth's rotation creates day and night cycles.
• Describe the changing position of celestial objects over different times of the day and year.+ Show more

Learning Objectives

• Explain how an iteration loop uses test evidence to refine a science or engineering solution.
• Identify how design changes (such as dimensions, materials, or alignment) connect to observed outcomes.
• Describe why reliability concerns and safety margins often increase as revisions clarify weak points.+ Show more

Learning Objectives

• Explain the process of seafloor spreading at mid-ocean ridges.
• Identify evidence such as magnetic striping that supports seafloor spreading.
• Describe how age progression, bathymetry, and sediment thickness relate to ocean basin formation.+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Identify key structural differences between prokaryotic and eukaryotic cells.
• Explain how cellular organization influences function and complexity.
• Compare and contrast the components of prokaryotic and eukaryotic cells.+ Show more

Learning Objectives

• Explain how static and kinetic friction differ and how surface conditions affect the friction force
• Describe how fluid drag depends on an object's motion and on properties like cross-sectional area and medium density
• Use qualitative and simplified quantitative relationships to predict how net force changes with relative motion

Learning Objectives

• Understand the importance of controls in scientific investigations.
• Identify variables and safety practices in experimental procedures.
• Explain how measurement accuracy impacts data reliability.+ Show more

Learning Objectives

• Identify various human activities that affect biodiversity and ecosystems.
• Understand how habitat fragmentation, pollution, and resource extraction alter ecosystem services.
• Evaluate the effects of invasive species and greenhouse gases on species diversity and ecosystem functioning.+ Show more

Learning Objectives

• Understand hierarchical relationships among cells, tissues, organs, and systems.
• Identify examples of tissue specialization and extracellular matrices.
• Explain how tissue arrangement supports organ-level functions.+ Show more

Learning Objectives

• Understand how catabolic and anabolic pathways connect to support organismal energy needs.
• Explain the role of hormones and nutrient availability in shifting metabolic priorities.
• Describe immediate and long-term metabolic adjustments at the molecular and organelle levels.+ Show more

Learning Objectives

• Explain how appropriate instruments, calibration, and consistent units affect measurement accuracy
• Use significant figures to represent measurement precision appropriately
• Convert units correctly and record data in a consistent format to reduce misinterpretation+ Show more

Learning Objectives

• Understand how symptom descriptions, circuit topology, and measurement data are used to diagnose electrical faults.
• Identify fault types such as open circuits, short circuits, and component degradation from observed signals.
• Apply logical inference to interpret instrument readings and determine probable failure modes.+ Show more

Learning Objectives

• Explain how electricity moves from transmission systems to consumers through substations and distribution networks
• Describe how voltage transformation and feeder topology affect reliability and capacity
• Analyze how faults propagate and how system design choices improve resilience

Learning Objectives

• Identify significant figures in various measurements
• Understand the importance of calibration and appropriate units
• Learn how to convert measurements between different units+ Show more

Learning Objectives

• Describe the structure of DNA and its double-helix organization.
• Explain how chromosomes carry genetic information and are organized in the nucleus.
• Differentiate between nuclear and organelle genomes.+ Show more

Learning Objectives

• Understand the concept of polygenic traits and how multiple genes influence a single trait.
• Recognize phenomena such as epistasis, pleiotropy, variable penetrance, and expressivity.
• Explore how linkage reduces independent assortment and how environmental factors affect phenotype.+ Show more

Learning Objectives

• Identify the different types of chemical bonds and their electron arrangements.
• Explain how ionic, covalent, and metallic bonds influence the properties of materials.
• Recognize observable physical and chemical properties associated with each bond type.+ Show more

Learning Objectives

• Explain how element symbols represent atoms using one- or two-letter notation.
• Interpret chemical formulas by reading subscripts as numbers of atoms.
• Connect symbolic representations to the composition of common substances.+ Show more

Learning Objectives

• Define what a free body diagram is and explain its purpose in physics.
• Identify various external forces acting on an object in a diagram.
• Interpret vectors representing forces in a free body diagram.+ Show more

Learning Objectives

• Explain how mechanical advantage relates input force, load force, input distance, and load distance
• Calculate mechanical advantage for simple lever, pulley, and wheel systems using ratios
• Compare trade-offs between force reduction and increased displacement in real devices+ Show more

Learning Objectives

• Understand how acceleration relates to changes in speed over time.
• Interpret distance–time and speed–time graphs to identify acceleration patterns.
• Explain the significance of acceleration direction during speed increase or decrease.+ Show more

Learning Objectives

• Explain how net force (vector sum of forces) determines the direction and magnitude of acceleration.
• Distinguish between balanced forces (net force = 0) and unbalanced forces (net force ≠ 0).
• Resolve forces into components and calculate net force using vector addition.+ Show more

Learning Objectives

• Explain how cells, tissues, organs, and organ systems relate in a hierarchy of biological organization
• Use examples (epithelial linings, muscle tissue, and organ assemblies) to describe how specialization leads to organ-level functions
• Describe how arrangement at the tissue and organ levels supports physiological capacity and constraints

Learning Objectives

• Understand the basic variables involved in motion equations
• Identify and interpret key components of constant-acceleration equations
• Apply algebraic methods to solve motion problems+ Show more

Learning Objectives

• Understand the components and relationships within ecosystems
• Identify factors that cause ecosystem changes
• Explain how ecosystems recover from disturbances+ Show more

Learning Objectives

• Differentiate between sexual and asexual reproduction in terms of genetic outcomes and parent involvement
• Explain how reproductive strategies affect genetic diversity and population change over time
• Apply Alberta examples to identify whether a reproductive mode is primarily sexual or asexual

Learning Objectives

• Explain how promoters, enhancers, silencers, and transcription factors control gene transcription.
• Describe how epigenetic modifications (DNA methylation and histone acetylation) change chromatin accessibility.
• Analyze how regulatory networks and feedback loops fine-tune gene expression in response to signals.

Learning Objectives

• Understand the mathematical formulation of Newton's second law and its vector form.
• Differentiate between mass and weight and their roles in force and acceleration.
• Apply Newton's second law to analyze systems involving multiple forces and accelerations.+ Show more