Grade 9 Science Worksheets

Learning Objectives

• Explain how net force is determined by adding forces as vectors with direction and magnitude
• Use Newton’s second law to predict how net force changes an object’s acceleration
• Identify situations where forces balance (net force equals zero) and where opposing forces reduce motion

Learning Objectives

• Explain Newton’s first law using net external force and motion
• Distinguish rest from constant velocity using balanced forces
• Predict motion changes caused by friction and unbalanced forces+ Show more

Learning Objectives

• Understand measures of dispersion such as variance, interquartile range, and range.
• Interpret the coefficient of variation and its role in comparing groups.
• Analyze how variability impacts confidence in statistical estimates and hypothesis testing.+ Show more

Learning Objectives

• Identify five common types of chemical reactions
• Classify reactions using reactant and product patterns
• Predict likely products based on reaction type+ Show more

Learning Objectives

• Understand the process of electron transport chains in mitochondria and chloroplasts.
• Describe how redox reactions couple with proton pumping to generate ATP.
• Explain the role of membrane integrity and oxygen availability in ATP synthesis efficiency.+ Show more

Learning Objectives

• Understand the key features that distinguish elements, compounds, and mixtures.
• Learn how to represent elements and compounds using symbols and formulas.
• Identify and classify substances as pure substances or mixtures based on their composition.+ Show more

Learning Objectives

• Explain the particulate (particle) model of matter using particle motion, spacing, and collisions
• Use the particulate model to predict diffusion, pressure, and temperature changes in solids, liquids, and gases
• Relate everyday and Alberta examples (e.g., salt on roads, odour spread from farms) to particle-level processes

Learning Objectives

• Define and distinguish between speed and velocity
• Understand basic units of motion measurement
• Apply real-world examples of speed and velocity+ Show more

Learning Objectives

• Understand the roles and differences of innate and adaptive immune responses.
• Identify how immune cells communicate with other body systems.
• Describe how the immune system supports homeostasis and tissue repair.+ Show more

Learning Objectives

• Understand the concept of albedo feedback and its effect on climate change.
• Identify factors that influence surface reflectivity and regional warming.
• Analyze how melting ice, snow, vegetation shifts, and cloud cover contribute to feedback mechanisms.+ Show more

Learning Objectives

• Explain energy transfer during common phase changes
• Interpret temperature plateaus on heating and cooling curves
• Describe latent heat during phase transitions+ Show more

Learning Objectives

• Identify the main idea of how the circulatory system transports materials.
• Describe key roles of blood flow in delivering oxygen and nutrients and removing wastes.

Learning Objectives

• Apply kinematics, net-force reasoning, and energy considerations together to explain complex motion.
• Use free-body diagrams and Newton’s 2nd law to predict acceleration for real-world scenarios.
• Use energy (work and the work-energy theorem) to check or refine predictions such as stopping distance.+ Show more

Learning Objectives

• Calculate mechanical work using the relationship W = F d cos(θ) for forces applied at an angle.
• Differentiate work done by constant forces versus work done by variable forces.
• Model variable-force work using the area under a force–distance curve.

Learning Objectives

• Explain how physical barriers, innate immune cells, and adaptive immune responses protect the body from pathogens and environmental insults.
• Compare antigen recognition in innate versus adaptive immunity and describe how antibody-mediated responses contribute to protection.
• Describe how inflammation and immune memory help the body respond to threats, and how nutrition, stress, and exposures can change immune competence.

Learning Objectives

• Explain how the relative positions of the Sun, Earth, and Moon create the sequence of lunar phases
• Describe how the synodic month controls the regular timing of repeating lunar phases
• Use the fraction of the Moon’s disk illuminated from Earth to predict which phase is visible

Learning Objectives

• Explain how relative positions of the Sun, Moon, and Earth determine Moon phases.
• Describe why eclipses require specific alignment and do not occur every month.
• Use viewing geometry and orbital tilt to predict when eclipses are more likely.

Learning Objectives

• Understand the concepts of power and efficiency in mechanical systems
• Learn how to calculate power and efficiency
• Analyze how energy transfer affects machine performance

Learning Objectives

• Explain how environmental exposures and lifestyle factors can contribute to chronic disease through biological mechanisms.
• Describe how dose–response relationships and vulnerability factors affect health outcomes over time.
• Compare epidemiological evidence with mechanistic evidence when evaluating health risks from pollutants and toxicants.

Learning Objectives

• Understand the relationships between Earth's, Moon's, and Sun's orbital patterns and effects.
• Identify phenomena such as seasons, lunar phases, and tides resulting from orbital interactions.
• Describe how Earth's axial tilt and orbital eccentricity influence climate cycles.+ Show more

Learning Objectives

• Understand the role of sex chromosomes in inheritance.
• Explain mechanisms of sex-linked trait expression in mammals.
• Distinguish between sex determination systems and inheritance patterns.+ Show more

Learning Objectives

• Distinguish correlation from evidence needed to support causation
• Explain how oxidative stress damages cellular components
• Describe how chronic inflammation can affect health over time+ Show more

Learning Objectives

• Understand the concept of ionic bonding and electron transfer
• Identify properties of ionic compounds versus covalent compounds
• Recognize examples of ionic bonds in real-world materials+ Show more

Learning Objectives

• Compare sexual and asexual reproduction in terms of how offspring are produced and how variation changes.
• Explain how specific asexual mechanisms (budding, binary fission, and vegetative cloning) affect genetic similarity in offspring.
• Connect reproductive modes to ecological trade-offs such as population growth rate and genetic diversity.

Learning Objectives

• Explain how a net force changes an object's velocity over time.
• Determine whether forces are balanced or unbalanced from a motion description.
• Identify the direction of the net force and resulting acceleration.+ Show more

Learning Objectives

• State the conservation of mass principle for closed chemical systems
• Compare total reactant mass with total product mass
• Explain how atoms rearrange during chemical reactions+ Show more

Learning Objectives

• Identify classical simple machines and their mechanical functions
• Calculate ideal mechanical advantage using force relationships
• Relate input distance to output distance in ideal machines+ Show more

Learning Objectives

• Identify traits influenced by multiple genes
• Understand phenomena like epistasis and pleiotropy
• Recognize how environment affects genetic traits

Learning Objectives

• Understand the different types of chemical reactions, focusing on synthesis reactions.
• Identify synthesis reactions from textual descriptions.
• Recognize the characteristic reactant patterns and products of synthesis reactions.

Learning Objectives

• Represent temporally changing systems using time-series descriptions and difference equations
• Analyze transient versus steady-state behavior, including equilibrium and feedback
• Use phase-diagram reasoning to interpret how system states evolve over time+ Show more

Learning Objectives

• Understand the principles of diagnostic reasoning in electrical fault scenarios.
• Identify likely failure modes based on symptom descriptions and measured data.
• Apply logical inference to determine causes such as open circuits, short circuits, or component degradation.+ Show more

Learning Objectives

• Explain how scientific arguments connect evidence to reasoning to support or weaken a claim
• Interpret patterns in data and uncertainty to decide whether evidence is strong or weak
• Identify alternative explanations and describe how additional evidence could distinguish between them

Learning Objectives

• Understand how to effectively communicate design decisions using data, diagrams, and reasoning.
• Learn to interpret and create labeled diagrams that show component relationships.
• Analyze data summaries to compare results to criteria and assess uncertainty or variation.+ Show more

Learning Objectives

• Understand how fossil records provide evidence for past life and evolution.
• Identify different types of fossils and methods used to date them.
• Explain the significance of transitional fossils and stratigraphy in reconstructing evolutionary history.+ Show more

Learning Objectives

• Understand how feedback loops, redundancy, and cross-regulation maintain system coordination in the body.
• Identify examples of multi-system responses during exercise.
• Explain how disruptions in one component affect overall homeostasis.+ Show more

Learning Objectives

• Identify observable evidence that indicates a chemical change has occurred
• Differentiate physical change from chemical change using multiple indicators
• Explain why chemical changes are often hard to reverse under ordinary conditions+ Show more

Learning Objectives

• Define chemical change as a process that forms new substances with different properties and different particle composition.
• Use observable indicators (temperature change, gas production, precipitate formation, and persistent color change) to identify likely chemical reactions.
• Distinguish chemical evidence from physical changes by considering whether new substances are produced.+ Show more

Learning Objectives

• Explain how allele combinations and dominance affect predicted phenotypes in offspring
• Use probability to estimate expected trait frequencies across one or more generations
• Interpret family evidence to infer likely parental genotypes

Learning Objectives

• Explain how disturbances can change ecosystem stability by altering biotic interactions and environmental conditions
• Compare gradual versus rapid ecosystem shifts using evidence from population trends and community structure
• Describe how feedback processes and recovery rates influence whether an ecosystem returns or transforms+ Show more

Learning Objectives

• Explain how metric units and prefixes create precise, consistent measurements in science
• Determine instrument resolution and convert readings correctly using appropriate significant figures
• Describe why calibration reduces systematic error and improves data reliability+ Show more

Learning Objectives

• Distinguish pure substances from mixtures using fixed composition and macroscopic appearance.
• Classify examples as elements, compounds, homogeneous mixtures, or heterogeneous mixtures.
• Use chemical symbols and formulas to represent elements and compounds accurately.+ Show more

Learning Objectives

• Understand how impulse relates force, time, and change in momentum during collisions.
• Differentiate between elastic and inelastic collisions based on energy conservation.
• Analyze force-time profiles and energy transformations in collision scenarios.+ Show more

Learning Objectives

• Understand how forces affect motion in various scenarios.
• Analyze graphs, equations, and net-force reasoning to interpret complex motion.
• Apply integrated analysis techniques to real-world transportation and recreational contexts.

Learning Objectives

• Explain what impulse is and how force and time contribute to it.
• Understand the difference between elastic and inelastic collisions.
• Analyze how changes in momentum occur during collisions.+ Show more

Learning Objectives

• Explain Newton’s second law using the idea that net force is proportional to mass times acceleration.
• Distinguish mass from weight and connect the difference to acceleration using net force.
• Use vector reasoning (direction of net force and acceleration) and check units in force, mass, and acceleration problems.

Learning Objectives

• Understand the hierarchical levels of biological organization from molecules to organisms.
• Recognize emergent properties at each level of biological complexity.
• Explain how components assemble into larger systems to support life functions.+ Show more

Learning Objectives

• Understand the three fundamental laws of motion proposed by Sir Isaac Newton.
• Identify real-world examples illustrating each of Newton's laws.
• Explain how forces influence the motion of objects in different scenarios.+ Show more

Learning Objectives

• Understand how environmental exposures impact cellular processes and organ systems.
• Identify common pollutants and toxicants and their effects on human health.
• Explain concepts of dose-response and vulnerability factors in environmental health.+ Show more