Grade 9 Science Worksheets

Learning Objectives

• Understand the different types of tissues and their functions.
• Identify characteristics of epithelial, connective, muscle, and nervous tissues.
• Explain how tissue structure relates to function in organs.+ Show more

Learning Objectives

• Analyze how body systems interact to maintain homeostasis under various conditions.
• Explain feedback mechanisms, set points, and the coordination between endocrine and autonomic responses.
• Describe examples such as thermoregulation, acid-base balance, and responses to stress.+ Show more

Learning Objectives

• Understand how environmental exposures influence cellular processes and long-term health.
• Identify types of pollutants and hazards affecting human health.
• Describe mechanisms by which pollutants cause DNA damage, endocrine disruption, and transport impairment.+ Show more

Learning Objectives

• Analyze the structure and function of nephrons in blood filtration and urine formation.
• Describe the processes of glomerular filtration, reabsorption, secretion, and concentration of urine.
• Explain how renal regulation maintains electrolyte balance, acid-base homeostasis, and blood pressure.+ Show more

Learning Objectives

• Explain how Earth’s axial tilt and orbital motion change the Sun’s angle and the length of day for each hemisphere.
• Describe why seasons are predictable periodic patterns caused by Sun–Earth geometry rather than Earth’s distance from the Sun.
• Connect seasonal sunlight changes to temperature cycles and real-world weather and environmental impacts.

Learning Objectives

• Explain how greenhouse gases affect the flow of energy in Earth’s atmosphere.
• Describe the process of infrared absorption and re-emission and how it changes outgoing heat.
• Interpret how changes in greenhouse gas concentration can alter Earth’s energy balance and surface temperature.+ Show more

Learning Objectives

• Explain how measurement practices turn observations into usable scientific data.
• Distinguish between accuracy and precision using real measurement examples.
• Describe how calibration and repeatability improve reliability of experimental data.+ Show more

Learning Objectives

• Explain how the fossil record can support gradual evolution over geological time
• Distinguish homologous structures from analogous structures caused by convergent evolution
• Describe how genetic data (DNA similarity) helps infer relatedness and shared ancestry+ Show more

Learning Objectives

• Explain the process of fertilization and its role in forming a zygote.
• Differentiate between internal and external fertilization strategies with examples.
• Describe embryonic stages such as cell differentiation and morphogenesis.+ Show more

Learning Objectives

• Explain how limiting factors affect population growth in an ecosystem
• Describe carrying capacity and how populations stabilize when limiting factors intensify
• Analyze how limiting factors influence species interactions and biodiversity over time

Learning Objectives

• Explain the role of skin, vasculature, and sweat glands in maintaining body temperature.
• Describe the neural and hormonal pathways involved in thermoregulation.
• Differentiate between mechanisms that increase heat production and those that promote heat loss.+ Show more

Learning Objectives

• Explain how climate variability affects weather averages over months to years
• Describe ocean-atmosphere interactions (El Niño and La Niña) and their impacts on temperature and rainfall
• Distinguish natural variability from long-term climate trends using evidence across timescales and regions

Learning Objectives

• Understand how series and parallel circuits combine within complex networks.
• Apply systematic methods to simplify mixed circuit arrangements.
• Identify equivalent resistances and analyze current and voltage distributions.+ Show more

Learning Objectives

• Understand the ecological, economic, and health risks associated with genetic technologies.
• Evaluate potential benefits and trade-offs of adopting genetic approaches.
• Explain risk assessment, mitigation strategies, and long-term monitoring in biotechnology.+ Show more

Learning Objectives

• Explain how the Earth’s magnetic field is related to compass direction and navigation.
• Describe dip (inclination) and declination and how they change with location.
• Connect auroras and ionospheric phenomena to Earth’s magnetism.+ Show more

Learning Objectives

• Explain how polygenic inheritance, epistasis, and pleiotropy can cause deviations from simple Mendelian ratios
• Describe how variable penetrance and expressivity affect whether and how genotypes show up as phenotypes
• Evaluate how linkage and environmental factors can change observed inheritance patterns in families and populations

Learning Objectives

• Explain how plate convergence and continental collision produce mountain building through folding, thrust faulting, and crustal shortening.
• Identify key tectonic processes (magmatic intrusion and isostatic rebound) and describe how they change rock structure and elevation.
• Use rock types, structural patterns, and timing clues to infer tectonic history and reconstruct past plate motions.

Learning Objectives

• Differentiate homogeneous solutions from heterogeneous mixtures based on uniformity and particle distribution.
• Identify the roles of solute and solvent in solutions and describe how concentration relates to appearance and behavior.
• Select appropriate physical separation methods using differences in physical properties such as size, solubility, or boiling point.

Learning Objectives

• Explain how climate models represent Earth’s energy balance and atmospheric circulation.
• Describe how greenhouse gas scenarios influence temperature and precipitation projections.
• Evaluate the role of feedbacks and uncertainty when interpreting model results.

Learning Objectives

• Explain how geologic and atmospheric indicators are used to characterize the origin, frequency, and potential impacts of natural hazards.
• Analyze spatial patterns and triggering mechanisms to describe why some places experience higher hazard and risk.
• Evaluate how recurrence intervals and paleoevidence support risk assessment for human and ecological systems.

Learning Objectives

• Explain how net force determines the direction and magnitude of acceleration
• Use the relationship between net force, mass, and acceleration to predict motion
• Analyze real-world scenarios with multiple forces acting on an object+ Show more

Learning Objectives

• Compare DNA and RNA structural features, including strand structure, sugar type, and base composition
• Explain how complementary base pairing and strand directionality relate to replication and transcription
• Describe how structural differences influence the stability and functions of DNA and RNA

Learning Objectives

• Explain how matter cycles through Earth’s reservoirs using geologic and biological processes.
• Describe how water, carbon, and nutrients move through the atmosphere, hydrosphere, biosphere, and geosphere.
• Use evidence-based reasoning and simple models to predict how changes in cycles can affect surface conditions and climate.

Learning Objectives

• Differentiate kinetic energy and gravitational potential energy in terms of motion and position
• Explain how height and speed affect potential and kinetic energy in everyday systems like roller coasters
• Use reference levels and energy transfer ideas to interpret energy changes during motion

Learning Objectives

• Explain how molecular signals regulate gene expression and protein activity in cells
• Describe how receptor-ligand binding and signal transduction cascades control cellular responses
• Use examples such as insulin signaling to connect molecular regulation to physiological outcomes+ Show more

Learning Objectives

• Explain how environmental chemical changes can be analyzed using mass conservation and measurable mass flows
• Connect acid deposition chemistry to observable effects on limestone using particulate and atomic explanations
• Describe how tailings chemistry and nutrient cycling involve system boundaries and chemical transformations

Learning Objectives

• Explain Newton’s three laws using force–motion relationships and real-world examples.
• Use Newton’s laws to predict and justify how changes in force affect acceleration and motion.
• Apply action–reaction reasoning to systems involving recoil and anchoring loads.+ Show more

Learning Objectives

• Explain how the changing geometry between the Sun, Earth, and Moon causes the visible lunar phases.
• Describe the synodic month and why lunar phases repeat in a predictable sequence.
• Use illuminated fraction and viewing perspective to predict which phase comes next.

Learning Objectives

• Explain major sources of mutations, including replication errors and environmental mutagens such as radiation and chemicals.
• Describe how different types of DNA mutations (point mutations, insertions/deletions, and chromosomal changes) can affect gene function or regulation.
• Connect heritable mutations to how genetic variation becomes the raw material for natural selection and evolution.

Learning Objectives

• Interpret slopes on displacement–time and velocity–time graphs as physical quantities (velocity and acceleration).
• Use the area under a velocity–time graph to determine displacement and describe motion histories.
• Identify features such as constant segments, sign changes, discontinuities, and curved sections in real-world motion data.

Learning Objectives

• Explain how limiting factors (resources, predation, disease, and environment) constrain population growth.
• Describe the relationship between limiting factors and carrying capacity.
• Analyze how changes in limiting factors can shift community interactions and biodiversity.

Learning Objectives

• Explain how natural selection increases the frequency of heritable traits that improve reproductive success in a specific environment.
• Describe selective pressure, fitness, and adaptive trade-offs using examples from Alberta.
• Compare artificial selection in agriculture with natural selection and infer how adaptation can accumulate over generations.

Learning Objectives

• Explain how pulmonary ventilation and cardiovascular transport work together to deliver oxygen and remove carbon dioxide.
• Describe how heart rate, stroke volume, and vascular resistance can change in response to respiratory and metabolic demands.
• Use chemoreceptor feedback to predict how changes in blood gases affect ventilation and circulation.+ Show more

Learning Objectives

• Explain how biodiversity includes species diversity and genetic variation within ecosystems.
• Describe how environmental and human-caused changes can alter population sizes and species interactions.
• Evaluate how changes in biodiversity can affect ecosystem stability and functions.

Learning Objectives

• Explain power as the rate of energy transfer or the rate of doing work
• Use time and energy information to compare power in different situations
• Interpret real-world examples (such as appliances and motors) using rate reasoning

Learning Objectives

• Explain how ligands bind to receptors and initiate signal transduction inside cells
• Describe how second messengers and phosphorylation help relay and amplify signals
• Compare autocrine, paracrine, endocrine, and synaptic signaling by distance and time scale+ Show more

Learning Objectives

• Explain how photons drive charge separation in photosystems during the light reactions.
• Describe how an electron transport chain creates a proton gradient that powers ATP synthase.
• Connect water splitting to electron replenishment and oxygen release.

Learning Objectives

• Explain how DNA replication produces two DNA molecules using a semi-conservative mechanism.
• Describe the roles of helicase, primase, DNA polymerase, and Okazaki fragments during replication.
• Compare leading-strand and lagging-strand synthesis and predict how errors can affect genome stability.+ Show more

Learning Objectives

• Identify major eukaryotic cell organelles and describe their primary functions
• Explain how an organelle’s structure and molecules relate to the cell task it performs
• Compare how organelle roles support different tissue needs in plants and animals

Learning Objectives

• Explain when total mechanical energy (kinetic + potential) is conserved in the presence of negligible non-conservative forces
• Describe how kinetic energy and gravitational potential energy interconvert in real-world motion under gravity
• Use non-conservative work (such as friction) to predict how mechanical energy changes in a system+ Show more

Learning Objectives

• Explain how solar energy and Earth’s energy balance influence long-term climate patterns.
• Describe how interactions among the atmosphere, hydrosphere, cryosphere, lithosphere, and biosphere shape regional climate.
• Analyze how natural variability and external forcings (aerosols, greenhouse gases, ocean circulation, land surface properties) affect temperature, precipitation, and extremes.

Learning Objectives

• Explain how Earth's energy budget is influenced by solar flux and albedo
• Describe how greenhouse gases affect outgoing longwave radiation and surface-atmosphere energy balance
• Use ideas about ocean heat transport and climate feedbacks to interpret regional variability+ Show more

Learning Objectives

• Define mechanical work and express it using force and displacement (including when work is zero or negative).
• Identify major energy forms and distinguish kinetic and potential energy using qualitative and quantitative reasoning.
• Calculate work for constant forces and explain how energy transfer relates to conservation of energy in simple isolated systems.

Learning Objectives

• Explain that compounds contain two or more elements in fixed ratios and how this is reflected in chemical formulas.
• Differentiate ionic and covalent bonding and predict how bonding affects macroscopic properties like melting point and conductivity.
• Apply the law of definite composition and use formulas to reason about predictable mass relationships in compounds.+ Show more

Learning Objectives

• Explain how alveolar–capillary diffusion depends on partial pressure gradients, surface area, and membrane thickness.
• Describe how ventilation, anatomical dead space, and ventilation–perfusion matching affect oxygen uptake and carbon dioxide removal.
• Evaluate how haemoglobin affinity and perfusion limitations influence oxygen delivery to tissues for aerobic metabolism.

Learning Objectives

• Explain how unequal solar heating drives temperature differences, air pressure differences, and atmospheric circulation
• Describe how energy transfers between Earth’s surface and the atmosphere influence humidity, cloud formation, and precipitation
• Use a weather model to predict how changes in temperature and moisture can affect short-term weather patterns

Learning Objectives

• Differentiate ionic, covalent, and metallic bonding based on electron interactions.
• Predict some macroscopic properties (melting point, conductivity, structure/solubility patterns) from bonding type.
• Apply bonding ideas to real-world examples such as sodium chloride and metal ores.

Learning Objectives

• Explain how greenhouse gases affect Earth’s energy flow by absorbing and re-emitting infrared radiation.
• Describe how energy balance depends on absorption, re-emission, and the altitude where radiation escapes to space.
• Use greenhouse-effect concepts to predict how changes in greenhouse gas concentrations can change surface temperature.