Grade 9 Science Worksheets

Learning Objectives

• Develop a testable prediction about changes in stream turbidity
• Identify safe procedures for investigating environmental chemistry questions
• Interpret turbidity observations and explain sources of uncertainty+ Show more

Learning Objectives

• Compare electricity generation methods using resource and environmental criteria
• Explain how batteries help balance electricity supply and demand
• Identify conservation actions that reduce unnecessary electricity use+ Show more

Learning Objectives

• Compare optical and radio telescopes by the signals they detect.
• Explain how satellite measurements support Earth observation.
• Interpret geometric models used to estimate satellite-based positions.+ Show more

Learning Objectives

• Calculate electrical power from voltage and current measurements.
• Determine energy transferred using power and operating time.
• Convert operating time into seconds for energy calculations.+ Show more

Learning Objectives

• Explain how DNA, genes, and chromosomes relate to inherited characteristics
• Compare the outcomes and roles of mitosis and meiosis
• Distinguish natural selection from selective breeding using examples+ Show more

Learning Objectives

• Compare geocentric and heliocentric models of the solar system
• Distinguish astronomical observations from scientific models
• Explain how Galileo's observations challenged earlier explanations+ Show more

Learning Objectives

• Distinguish experimental evidence from theoretical atomic models.
• Explain how atomic number determines an element's identity.
• Describe the relationship between neutral atoms, protons, and electrons.+ Show more

Learning Objectives

• Explain energy conversions in chemical cells, electric motors, and generators
• Describe how electromagnetic induction produces voltage in a generator
• Compare useful energy outputs with transfers to the surroundings+ Show more

Learning Objectives

• Develop testable predictions for electrical circuit investigations.
• Identify variables and hazards in a safe circuit test.
• Interpret electrical measurements while considering uncertainty.+ Show more

Learning Objectives

• Compare how sexual and asexual reproduction transmit genetic information.
• Distinguish inherited characteristics from environmentally influenced differences.
• Explain discrete and continuous variation using biological examples.+ Show more

Learning Objectives

• Develop testable predictions about questions in space exploration
• Plan safe investigations using appropriate observations and measurements
• Interpret sensor data while identifying uncertainty and alternative explanations+ Show more

Learning Objectives

• Identify practical benefits of space projects for people and communities
• Describe Canadian contributions through the Canadarm and Canadarm2
• Compare space project benefits, costs, and alternative approaches+ Show more

Learning Objectives

• Explain how spacecraft manage pressure, temperature, and radiation hazards
• Describe how life-support systems manage air and water resources
• Compare documented space technologies with speculative design possibilities+ Show more

Learning Objectives

• Distinguish physical changes from chemical changes using observable evidence
• Construct testable predictions for controlled chemical investigations
• Interpret measurements while considering uncertainty and alternative explanations+ Show more

Learning Objectives

• Develop testable predictions about biological diversity.
• Plan safe investigations with consistent sampling procedures.
• Interpret biodiversity observations and identify uncertainty.+ Show more

Learning Objectives

• Explain how amount, chemical form, and context affect substance harm.
• Describe how uptake and elimination influence substance retention.
• Interpret dilution models to compare environmental concentrations.+ Show more

Learning Objectives

• Compare how air, water, and soil transport or retain substances.
• Distinguish biodegradation from toxicity using scientific evidence.
• Explain what an LD50 value measures under specified conditions.+ Show more

Learning Objectives

• Interpret ppm, pH, and dissolved-oxygen measurements in environmental samples
• Explain how biological observations complement chemical measurements
• Evaluate sampling plans using location, timing, and evidence limitations+ Show more

Learning Objectives

• Interpret chemical formulas to identify types and relative numbers of atoms
• Distinguish elements from compounds using chemical representations
• Predict ionic combining ratios from positive and negative ion charges+ Show more

Learning Objectives

• Identify observable evidence that may indicate a chemical reaction
• Explain how temperature, concentration, and surface area affect reaction rates
• Design fair tests using controlled variables and consistent measurements+ Show more

Learning Objectives

• Understand the purpose and structure of pedigree charts in genetics.
• Identify inheritance patterns such as autosomal dominant, recessive, X-linked, and mitochondrial.
• Interpret pedigree symbols and relationships to determine inheritance modes.

Learning Objectives

• Understand how gases like carbon dioxide, methane, and water vapor contribute to the greenhouse effect.
• Explain the role of radiative forcing and how small atmospheric changes impact climate.
• Identify natural and human sources of greenhouse gases and their effects on global temperatures.+ Show more

Learning Objectives

• Understand the roles of mitosis and meiosis in growth, repair, and reproduction.
• Identify key processes such as chromosome pairing, segregation, and errors like nondisjunction.
• Differentiate between somatic cell production and gamete formation.+ Show more

Learning Objectives

• Describe the components of Milankovitch cycles and their effects on Earth's climate.
• Explain how variations in Earth's orbit influence glacial and interglacial periods.
• Identify the three main orbital parameters involved in Milankovitch cycles and their long-term impact.+ Show more

Learning Objectives

• Describe different types of species interactions that occur within communities.
• Identify the roles of keystone species and ecosystem engineers.
• Analyze how species interactions influence community structure and ecosystem stability.+ Show more

Learning Objectives

• Understand the purpose of balancing chemical equations in chemistry.
• Identify unbalanced chemical equations.
• Learn how to use coefficients to balance equations correctly.+ Show more

Learning Objectives

• Explain the difference between resilience and resistance in ecosystems.
• Describe how thresholds and regime shifts can occur after disturbances.
• Identify factors and feedback processes that influence ecosystem recovery.

Learning Objectives

• Explain the principle of mass conservation in chemical reactions.
• Apply the concept to real-world examples such as combustion and gas measurements.
• Analyze the importance of atoms' conservation during chemical processes.+ Show more

Learning Objectives

• Identify key indicators of chemical reactions such as gas production, temperature change, precipitate formation, and color change.
• Distinguish between physical and chemical changes based on observable evidence.
• Understand microscopic processes involved in chemical transformations.

Learning Objectives

• Understand the particle arrangements in solids, liquids, and gases.
• Describe how energy transfer causes phase changes such as melting, vaporization, sublimation, and condensation.
• Explain latent heat and how phase transitions occur without changing chemical identity.+ Show more

Learning Objectives

• Describe the properties of gas particles using the particle model.
• Explain how pressure, volume, and temperature relate to particle motion.
• Connect microscopic particle behavior to macroscopic gas phenomena.

Learning Objectives

• Describe the particle arrangements in solids, liquids, and gases.
• Explain how particle motion varies with temperature and state.
• Relate microscopic particle behavior to observable properties like pressure and diffusion.+ Show more

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

• Describe mechanisms of asexual reproduction including binary fission, budding, spore formation, and vegetative propagation.
• Understand the genetic consequences of producing clones through asexual strategies.
• Compare ecological contexts where asexual versus sexual reproduction is advantageous.+ Show more

Learning Objectives

• Explain how temperature, pressure, concentration, and catalysts can change reaction rates and product outcomes
• Use equilibrium and kinetic ideas to predict how changes in conditions affect yield and selectivity
• Apply mass-balance and reaction-rate reasoning to closed-system chemical processes

Learning Objectives

• Understand the symbols and conventions used in pedigree charts.
• Interpret patterns of inheritance such as autosomal, X-linked, and mitochondrial.
• Analyze family trees to determine possible genotypes and inheritance modes.

Learning Objectives

• Identify the basic components of DNA and RNA
• Understand the structural differences between DNA and RNA
• Explain how nucleic acid structures relate to their functions in heredity and cellular processes

Learning Objectives

• Understand how multiple bodies and forces interact within mechanical systems.
• Apply Newton’s laws and net force analysis to predict motion outcomes.
• Analyze energy transfer, including losses, during system events like collisions.+ Show more

Learning Objectives

• Understand the differences between sexual and asexual reproduction
• Identify examples of each reproductive strategy in nature
• Analyze ecological trade-offs associated with reproductive methods

Learning Objectives

• Understand the principle of conservation of mass in closed systems during chemical reactions.
• Identify examples illustrating mass conservation, such as combustion and precipitate formation.
• Differentiate between apparent mass changes due to gas exchange and true mass conservation.+ Show more

Learning Objectives

• Understand the structure of ionic lattices and how they differ from covalent networks and molecular solids.
• Identify the physical properties that reflect the arrangement of particles in different solid structures.
• Explain how electrical forces among particles influence melting points, electrical conductivity, hardness, and solubility.

Learning Objectives

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

Learning Objectives

• Understand what genes and proteins are and their roles in living organisms.
• Explain the processes of transcription and translation in gene expression.
• Recognize how gene regulation influences traits and phenotypes.+ Show more

Learning Objectives

• Understand basic concepts of population genetics, including allele frequency and genetic variation.
• Identify the assumptions of Hardy-Weinberg equilibrium.
• Describe processes such as genetic drift, bottlenecks, and founder effects, and their impact on genetic diversity.+ Show more

Learning Objectives

• Recognize basic ethical questions related to genetic science
• Understand societal concerns about privacy and consent in genetics
• Identify different perspectives on food labeling and indigenous knowledge+ Show more

Learning Objectives

• Understand the concept of ionic bonds and their properties
• Identify examples of ionic compounds
• Describe how ionic bonds affect the physical properties of substances

Learning Objectives

• Understand the basic concepts and history of biotechnology
• Identify major genetic technologies and their applications
• Explain mechanisms of trait introduction at molecular and population levels+ Show more

Learning Objectives

• Identify common chemical element symbols.
• Recognize and interpret basic chemical formulas.
• Understand how symbols and formulas communicate chemical composition.