Grade 9 Science Worksheets

Learning Objectives

• Understand the hierarchical structure and purposes of biological classification systems.
• Identify shared traits and evolutionary relationships used in classifying organisms.
• Differentiate between traditional taxonomy and modern phylogenetic approaches.+ Show more

Learning Objectives

• Understand the concept of work as a dot product of force and displacement and its dependence on the angle between them.
• Differentiate between constant-force and variable-force work calculations.
• Apply area-under-the-curve methods to approximate work done by variable forces in common scenarios.+ Show more

Learning Objectives

• Understand the mathematical definition of work as the dot product of force and displacement.
• Apply the work formula involving force, angle, and displacement to various situations.
• Contrast methods for computing work when force is constant versus variable.+ Show more

Learning Objectives

• Understand the structure and function of cell organelles.
• Identify key components of a cell and their roles.
• Explain how cell structure relates to its function.+ Show more

Learning Objectives

• Define and identify sources of genetic variation including mutation, recombination, gene flow, and chromosomal rearrangements.
• Explain how different sources of variation contribute to genetic diversity and evolution.
• Analyze examples of genetic variation mechanisms in real-world or regional contexts.+ Show more

Learning Objectives

• Identify what an element symbol stands for in a chemical formula.
• Read subscripts as numbers that show relative proportions of atoms in a compound.
• Use correct element-symbol interpretation to explain composition of common substances.

Learning Objectives

• Define power as the rate of energy transfer.
• Explain how efficiency compares useful output energy to input energy.
• Use input power, output power, and losses to interpret real-world performance.

Learning Objectives

• Identify observable evidence of chemical change from acid deposition on limestone
• Explain particulate and atomic ideas for how acids affect carbonate minerals
• Use mass conservation ideas to describe measurable mass changes across a system boundary

Learning Objectives

• Define observable properties and explain why they are useful for identifying materials.
• Distinguish between physical properties and ways we measure or describe them.
• Use examples of colour, hardness, conductivity, density, and solubility to classify substances.

Learning Objectives

• Identify a frame of reference used to describe motion.
• Interpret velocity direction as measured in a chosen frame.
• Explain how changes in frame affect calculated displacement and velocity but not the physical facts of motion.

Learning Objectives

• Describe matter using a particulate model with discrete particles
• Explain how particle motion and spacing relate to diffusion
• Use kinetic energy and collisions to justify differences between solids, liquids, and gases+ Show more

Learning Objectives

• Describe how particle behavior differs in solids, liquids, and gases
• Identify evidence in a text that matches each state of matter to its particle model
• Explain phase changes using energy and particle motion

Learning Objectives

• Identify common standardized circuit symbols and what they represent.
• Use diagram conventions (nodes, wires, and polarity) to predict how current can flow.
• Explain how connection types in a circuit diagram affect the paths between components.

Learning Objectives

• Define work as energy transfer when a force acts through a distance
• Identify key terms: force, distance, direction, mechanical advantage
• Explain how changing distance and force affects work and machine performance+ Show more

Learning Objectives

• Distinguish series and parallel connections in a mixed (combined) circuit
• Predict how voltage and current behave within series vs. parallel branches
• Use circuit reasoning to trace where current can split and where it must remain the same

Learning Objectives

• Explain the relationship between voltage, current, and resistance for a linear resistor.
• Interpret a component description to predict how current changes when voltage changes.
• Identify correct limits and consequences of assuming linear behavior.

Learning Objectives

• Explain how genes (DNA segments) can encode proteins and include regulatory parts
• Describe transcription and translation as steps that connect DNA to proteins
• Identify how gene regulation and changes in expression can affect phenotype+ Show more

Learning Objectives

• Define electric current as the rate of charge flow and distinguish it from charge itself
• Use unit knowledge (amperes) to interpret typical current magnitudes in simple contexts
• Connect changes in current to changes in how fast charge moves through a circuit

Learning Objectives

• Describe how magnetic field lines show direction from a north pole to a south pole
• Explain how like poles and unlike poles affect magnetic attraction and repulsion
• Use basic field-mapping ideas to interpret magnets and compass behavior

Learning Objectives

• Identify cause-and-effect links between propagation choices and genetic diversity.
• Explain how chromosomes and Mendelian patterns can transmit selected traits.
• Describe variation sources and how selection can change trait frequencies in populations over generations.+ Show more

Learning Objectives

• Explain the main stages in moving electricity from generation to consumers.
• Describe how voltage transformation supports long-distance power transmission.
• Use a simple sequence to predict how faults can spread through a network.+ Show more

Learning Objectives

• Explain how natural selection acts on heritable traits over generations.
• Describe the role of selective pressure and fitness in changing populations.
• Identify an adaptive trade-off and give an example of camouflage or resilience.

Learning Objectives

• Explain why electrical safety standards exist and what hazards they reduce
• Identify what grounding, overcurrent protection, and insulation are meant to do
• Interpret basic device label terms (grounding, rating, and approved use) in everyday scenarios+ Show more

Learning Objectives

• Identify kinetic energy and gravitational potential energy in real situations
• Track total mechanical energy using energy accounting with work and non-conservative losses
• Explain how friction changes mechanical energy during motion

Learning Objectives

• Identify the main idea of a biotechnology text and use details to support it.
• Explain how selective breeding and hybridization can change traits in crops or livestock over generations.
• Connect genetic technology choices to potential benefits and limitations.

Learning Objectives

• Identify contact and non-contact forces in everyday situations
• Match forces to their push or pull effects
• Use opposing forces to predict how motion will change

Learning Objectives

• Explain how friction acts as a resistance force that opposes motion.
• Use vocabulary from a science text to interpret cause-and-effect relationships.
• Distinguish factors that increase or decrease friction in everyday situations.

Learning Objectives

• Define speed as distance travelled per unit time
• Identify speed in a description and choose correct distance-per-time units
• Use correct unit reasoning to compare speeds in familiar contexts

Learning Objectives

• Identify the main steps of binary fission and budding in asexual reproduction.
• Explain how asexual reproduction affects genetic similarity among offspring.
• Describe why asexual strategies can spread well in stable environments.

Learning Objectives

• Describe the structure of DNA as a double helix and explain how base pairing stabilizes it
• Identify how the sequence of DNA bases relates to the information carried by genes
• Explain why DNA structure affects how genetic information is passed on

Learning Objectives

• Define allele, genotype, and phenotype using correct science vocabulary
• Distinguish dominant and recessive alleles in single-gene crosses
• Use simple Punnett square logic to predict offspring outcomes

Learning Objectives

• Explain how conservation of atoms applies to chemical reactions
• Describe how balancing an equation fixes unequal atom counts
• Use a balanced equation to make correct predictions about relative amounts of reactants and products

Learning Objectives

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

Learning Objectives

• Understand the basic concepts and purposes of prototyping.
• Identify different prototyping methods such as sketches, CAD mockups, rapid prototyping, and physical models.
• Recognize the importance of testing protocols and measurement of performance metrics.+ Show more

Learning Objectives

• Explain the basic principles of orbital motion
• Describe how gravity influences planetary and satellite trajectories
• Interpret Kepler's laws and Newton's law of universal gravitation+ Show more

Learning Objectives

• Understand the different stages of star formation and evolution.
• Identify key features of the Hertzsprung-Russell diagram.
• Describe the processes leading to different stellar end states such as white dwarfs, neutron stars, and black holes.+ Show more

Learning Objectives

• Understand the formation of the solar system from a protoplanetary disk.
• Identify evidence supporting planetary formation theories.
• Describe the differences between inner rocky planets and outer gas giants.+ Show more

Learning Objectives

• Understand the role of systems and decision models in environmental science.
• Explore how scenario analysis, cost-benefit, and lifecycle assessments inform mitigation strategies.
• Analyze trade-offs among greenhouse gas reduction, health, and economic development.+ Show more

Learning Objectives

• Identify different types of energy sources.
• Understand the transition from fossil fuels to renewable energy.
• Explain concepts of decarbonization and greenhouse gas accounting.+ Show more

Learning Objectives

• Understand how earthquake risks are evaluated using historical and probabilistic methods.
• Identify key factors influencing earthquake hazard assessments, including occurrence, frequency, and impact.
• Analyze how hazard data and mapping inform community preparedness and mitigation strategies.+ Show more

Learning Objectives

• Understand the significance of the Keeling Curve in tracking atmospheric CO2 levels.
• Analyze how human activities impact carbon dioxide concentrations.
• Evaluate evidence linking atmospheric CO2 changes to climate variability.+ Show more

Learning Objectives

• Understand different energy sources and their environmental impacts
• Compare fossil fuels and renewable energy options
• Analyze trade-offs in resource extraction and sustainability+ Show more

Learning Objectives

• Understand the causes and effects of soil erosion
• Identify methods of soil conservation
• Recognize human impacts on land degradation+ Show more

Learning Objectives

• Identify different types of electromagnetic radiation and their positions in the spectrum.
• Describe the characteristics of electromagnetic waves, including frequency and wavelength.
• Explain how photons relate to electromagnetic wave energy and matter interactions.+ Show more

Learning Objectives

• Understand the basic concepts of signal encoding and modulation.
• Identify different encoding schemes such as amplitude, frequency, and phase modulation.
• Compare modulation techniques like pulse-code modulation and analog amplitude modulation.+ Show more

Learning Objectives

• Identify and describe the basic components of an atom: protons, neutrons, and electrons.
• Understand electron configurations and energy levels.
• Explain how the periodic table groups elements by valence electrons.+ Show more

Learning Objectives

• Understand the concept of ionic bonding and electron transfer
• Identify properties of ionic compounds
• Differentiate between ionic and covalent bonds+ Show more

Learning Objectives

• Define endothermic and exothermic reactions.
• Describe how energy is transferred during bond breaking and forming.
• Interpret energy diagrams related to chemical reactions.+ Show more