Grade 9 Science Worksheets

Learning Objectives

• Use inverse-square relationships to calculate gravitational and electrostatic force magnitudes.
• Determine force directions using vector reasoning for attraction and repulsion.
• Compare how force strength changes across different separation distances and between force types.

Learning Objectives

• Explain how climate models represent Earth’s energy balance and atmospheric circulation
• Describe how different greenhouse gas emission scenarios lead to different climate projections
• Evaluate feedbacks and uncertainty when comparing model results with evidence

Learning Objectives

• Understand the fundamental processes involved in mountain formation.
• Identify the features and mechanisms of plate convergence and continental collision.
• Learn how tectonic processes shape mountain ranges and landscapes.+ Show more

Learning Objectives

• Understand the process of fertilization in animals
• Differentiate between internal and external fertilization
• Describe embryonic development stages+ Show more

Learning Objectives

• Explain how point mutations, chromosomal rearrangements, meiotic recombination, and independent assortment generate heritable genetic variation.
• Describe how molecular changes (base substitutions and indels) can alter gene expression and protein function.
• Connect genetic variation mechanisms to population-level changes in allele frequencies and phenotypic distributions.+ Show more

Learning Objectives

• Explain how crossing over and independent assortment during meiosis create genetic variation.
• Describe how fertilization increases genetic diversity in offspring.
• Analyze predictions about genetic variation based on meiosis processes.

Learning Objectives

• Explain how inherited variation affects survival and reproduction in a given environment
• Describe how natural selection changes traits in a population over many generations
• Connect fitness to differential survival and reproduction

Learning Objectives

• Understand the basic metric units used in scientific measurement.
• Recognize the importance of instrument resolution and calibration.
• Learn how measurement accuracy and precision affect data quality.+ Show more

Learning Objectives

• Explain how organelles work together as integrated systems to support metabolism and cell maintenance.
• Describe how transport vesicles and the cytoskeleton coordinate movement of molecules and organelles within cells.
• Connect spatial organization of organelles to biochemical pathway function and cell responses.

Learning Objectives

• Understand the different mechanisms of molecular movement across cell membranes.
• Distinguish between passive and active transport processes.
• Explain the roles of specific transport proteins such as channels, carriers, and pumps.+ Show more

Learning Objectives

• Explain how energy moves directionally through trophic levels from primary producers to consumers and decomposers
• Describe the role of photosynthesis in converting light energy into chemical energy and how it enters food chains
• Interpret why energy transfer is inefficient and how this shapes energy pyramids and population sizes+ Show more

Learning Objectives

• Explain how angular momentum in a rotating protoplanetary disk can lead to planet formation.
• Describe how meteorite composition and isotopic radiometric dating provide evidence for solar system chronology.
• Connect volatile gradients and planetary differentiation to the rocky inner planets and gas-rich outer planets.

Learning Objectives

• Identify human activities that affect biodiversity and ecosystem services.
• Describe the effects of habitat fragmentation, pollution, and resource extraction.
• Analyze how changes in species diversity influence ecosystem functions and services.+ Show more

Learning Objectives

• Understand the fundamental principles of cell theory.
• Identify the differences between prokaryotic and eukaryotic cells.
• Recognize the roles of various cell organelles.+ Show more

Learning Objectives

• Explain how net external force determines changes in motion using Newton’s second law.
• Use conceptual force diagrams and free-body reasoning to identify contact and field forces.
• Apply net-force summation to calculate the acceleration of systems on inclines and with tension.

Learning Objectives

• Explain how mechanical energy changes form during motion, including conversion between kinetic and potential energy.
• Describe how collisions and friction transfer energy and why useful motion can turn into thermal energy.
• Use system thinking to track energy gained or lost across interacting parts of a mechanical system.

Learning Objectives

• Understand how matter cycles through ecosystems involving producers, consumers, and decomposers.
• Identify the roles of different organisms in nutrient transfer and matter conservation.
• Explain the processes that allow ecosystems to reuse essential elements for sustaining life.+ Show more

Learning Objectives

• Explain how systems thinking considers matter, energy, and information flows across interacting components.
• Identify how feedback and unintended effects can result from design changes in complex systems.
• Evaluate engineered solutions by using boundaries and long-term system behavior to meet performance targets.

Learning Objectives

• Classify common chemical reactions into synthesis, decomposition, single displacement, double displacement, and combustion.
• Predict typical products by recognizing patterns in reactants and understanding bond/ion reorganization.
• Explain how oxidation and redox ideas relate to combustion reactions.

Learning Objectives

• Explain how matter moves through producers, consumers, and decomposers in an ecosystem.
• Describe how chemical elements are transformed and recycled while matter is conserved across trophic levels.
• Identify where nutrients and organic material enter and leave the cycling process (soil, water, and organisms).

Learning Objectives

• Identify and describe the functions of basic cell organelles.
• Understand how nucleic acid sequences determine amino acid chains.
• Connect molecular coding and protein folding to organelle architecture.+ Show more

Learning Objectives

• Explain how natural selection acts on heritable variation to change allele frequencies over time.
• Distinguish directional, stabilizing, and disruptive selection using trait distributions.
• Connect natural selection to related evolutionary processes such as mutation, gene flow, and genetic drift.

Learning Objectives

• Understand the benefits and risks of common household chemicals
• Analyze how chemical properties affect their environmental and health impacts
• Evaluate the importance of safe handling, disposal, and regulation of chemicals

Learning Objectives

• Understand how to interpret the slope of displacement–time graphs as velocity.
• Discover how the slope of velocity–time graphs relates to acceleration.
• Learn to calculate displacement by finding the area under velocity–time graphs.+ Show more

Learning Objectives

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

Learning Objectives

• Explain how impulse relates to momentum change in collisions using force and contact time
• Interpret force–time profiles to predict how contact duration affects the resulting motion
• Distinguish elastic and inelastic collisions using kinetic energy and energy transformations+ Show more

Learning Objectives

• Understand how to interpret position–time graphs and what their slopes indicate about motion.
• Learn how to identify constant velocity and acceleration from the shape of graphs.
• Understand the significance of the area under a velocity–time graph regarding displacement.+ Show more

Learning Objectives

• Explain how scientific knowledge depends on evidence, models, and measurement rather than a single fixed method.
• Identify how limitations of instruments and assumptions in models can influence scientific conclusions.
• Analyze how peer evaluation and new measurements can change or strengthen scientific understanding.

Learning Objectives

• Explain how energy transforms from one form to another in various systems.
• Identify examples of energy conversion in electrical devices, motors, and generators.
• Understand the concept of system efficiency and energy dispersal as heat.+ Show more

Learning Objectives

• Identify and describe the main layers of the Earth: crust, mantle, and core.
• Explain the differences between the lithosphere and asthenosphere.
• Understand how pressure, temperature, and density vary with depth within Earth.+ Show more

Learning Objectives

• Explain how computational simulations use hypothesized mechanisms to generate predictions from model parameters
• Describe how parameter sensitivity and scenario comparisons affect simulation outcomes
• Interpret ensembles and visualizations as representations of uncertainty+ Show more

Learning Objectives

• Understand what phylogenetic trees depict about evolutionary relationships.
• Identify parts of a phylogenetic tree, including branches, nodes, and clades.
• Differentiate between rooted and unrooted trees.+ Show more

Learning Objectives

• Describe the levels of biological organization from cells to organism.
• Explain how tissues, organs, and organ systems interact to maintain organism functions.
• Identify examples of system interactions such as circulatory-respiratory coupling and nervous-endocrine integration.+ Show more

Learning Objectives

• Explain the relative positions needed for solar and lunar eclipses.
• Describe how orbital inclination limits eclipse frequency and helps predict eclipse paths.
• Use eclipse geometry to compare shadow direction and the visibility of totality.

Learning Objectives

• Explain how nitrogen and phosphorus move through ecosystems via biological, chemical, and physical processes.
• Describe key steps in the nitrogen cycle (fixation, assimilation, mineralization, denitrification) and how they affect primary productivity.
• Analyze how human nutrient inputs can disrupt nutrient cycling and lead to eutrophication and hypoxia in aquatic systems.

Learning Objectives

• Understand and identify standard symbols used in circuit diagrams
• Interpret schematic representations of electrical circuits
• Connect circuit symbols to physical components+ Show more

Learning Objectives

• Identify functional requirements, stakeholder criteria, and measurable constraints when framing an engineering challenge.
• Explain how social impacts, economic limits, regulatory restrictions, and environmental constraints interact in engineering design choices.
• Evaluate conceptual approaches by checking that objectives can be met within safety margins and available resources.

Learning Objectives

• Understand the concept of compound machines and how they are made of simple machines.
• Identify different types of simple machines such as gears, pulleys, levers, and inclined planes.
• Calculate the mechanical advantage of compound machines using force and displacement relationships.+ Show more

Learning Objectives

• Explain how fitness relates to survival and reproduction in a specific environment
• Describe how heritable traits can change in frequency through natural selection
• Analyze how changing environments can make different traits more or less beneficial

Learning Objectives

• Understand the basic idea of oxidation and reduction
• Identify electron transfer in chemical reactions
• Determine oxidation states of elements in compounds+ Show more

Learning Objectives

• Explain how cellular structures support specific functions (information storage, energy conversion, and selective exchange).
• Connect organism-level body structures to the tasks they perform (protection, movement, support).
• Use models and physical properties to justify how form enables a biological function.

Learning Objectives

• Understand the mechanisms of asexual reproduction such as binary fission, budding, spore formation, and vegetative propagation.
• Identify examples of asexual reproduction in Alberta's flora and fauna.
• Explain the genetic and ecological advantages and disadvantages of asexual reproduction.+ Show more

Learning Objectives

• Understand the processes that transform igneous, sedimentary, and metamorphic rocks
• Identify key mechanisms such as melting, crystallization, weathering, transport, deposition, and metamorphism
• Link tectonic settings to different types of rocks and their formation+ Show more

Learning Objectives

• Understand the Law of Conservation of Mass in chemical reactions
• Learn how to balance chemical equations
• Identify elements and formulas in chemical reactions+ Show more

Learning Objectives

• Explain how cells, tissues, organs, and organ systems form a hierarchy in multicellular organisms.
• Describe how functions at one level depend on functions at smaller levels.
• Use examples to connect structure to specific processes such as transport, support, regulation, and coordination.

Learning Objectives

• Understand the mechanisms driving ocean circulation, including surface currents and thermohaline flow.
• Identify features such as gyres, upwelling zones, and boundary currents and their effects on climate and ecosystems.
• Analyze how changes in ocean circulation can impact climate regimes and weather patterns.+ Show more

Learning Objectives

• Explain how the body regulates its temperature through various mechanisms.
• Identify the roles of skin, blood vessels, muscles, and the hypothalamus in temperature control.
• Describe feedback loops involved in thermoregulation.

Learning Objectives

• Explain how valence electron behavior leads to atomic bond formation
• Differentiate ionic bonding from covalent bonding using electron transfer vs. electron sharing
• Predict material properties (melting point, conductivity, and strength) based on bond type and structure+ Show more