Grade 9 Science Worksheets

Learning Objectives

• Explain how conservation of atoms connects to conservation of mass when system boundaries are defined correctly.
• Distinguish between open and closed systems and predict how escaped gases affect measured mass.
• Use mass measurements (reactants and products) to evaluate whether accounting for all phases is complete.+ Show more

Learning Objectives

• Explain Mendelian inheritance using segregation and predictable dominant/recessive phenotypes
• Compare non-Mendelian inheritance patterns (incomplete dominance, codominance, multiple alleles, sex-linked, imprinting, mitochondrial)
• Describe how linkage and environmental interactions can change observed phenotypic ratios

Learning Objectives

• Interpret patterns in data using graphs and tables, focusing on direction, spread, and outliers.
• Choose appropriate axes, scales, and labels to align claims with evidence.
• Evaluate statements about data representation tools using accurate reasoning.

Learning Objectives

• Explain how proportional reasoning and dimensional similarity help scale models across spatial and temporal contexts
• Use scaling relationships (including exponents) to predict how measurable quantities change with size or time
• Identify when scale-dependent effects and nonlinearity limit the applicability of simple proportional models

Learning Objectives

• Understand the relationship between wave speed, frequency, and wavelength.
• Explain how changes in frequency affect wavelength in a given medium.
• Connect wave properties to real-world examples of wave behavior.

Learning Objectives

• Understand the concept of work as the dot product of force and displacement
• Learn how the cosine of the angle between force and displacement affects work
• Differentiate methods for calculating work with constant and variable forces+ Show more

Learning Objectives

• Explain the key features of ocean circulation and their effects on climate.
• Describe how surface currents and deep thermohaline flows are driven.
• Identify features such as gyres, upwelling zones, and boundary currents and their influence.+ Show more

Learning Objectives

• Explain how heat transfer occurs due to temperature differences between a system and its surroundings
• Describe how work transfers energy through forces acting over a distance
• Distinguish physical and chemical changes by tracking how energy enters or leaves the system

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

Learning Objectives

• Identify the main idea of light reactions in thylakoid membranes
• Describe key steps: photon absorption, electron flow, and proton gradient formation
• Explain how water splitting replenishes electrons and releases oxygen

Learning Objectives

• Define diffusion and concentration gradients using accurate vocabulary.
• Explain how passive transport differs from active transport in terms of energy use.
• Describe how water moves by osmosis and how bulk movement can occur via vesicles.

Learning Objectives

• Identify common pedigree symbols and relationships.
• Explain how pedigrees help reveal inheritance patterns across generations.
• Distinguish between affected individuals and carrier status in basic pedigree reasoning.

Learning Objectives

• Identify a specific ethical issue related to genetic technologies.
• Support claims with evidence from a text about genetic privacy and consent.
• Explain how control of genetic information affects stakeholders and public trust.

Learning Objectives

• Identify claims about ecological risks and benefits from evidence in a passage
• Explain how gene flow can affect wild populations and why monitoring matters
• Use risk language (uncertainty, likelihood, mitigation) to evaluate ecological trade-offs

Learning Objectives

• Identify and distinguish common reaction types: synthesis, decomposition, single displacement, double displacement, and combustion.
• Use reactant-to-product patterns to anticipate products and recognize typical observable evidence for each reaction type.
• Apply conservation of mass to check whether a proposed reaction outcome is consistent with given reactants.

Learning Objectives

• Define physical properties as observable or measurable characteristics that do not change the chemical identity of a substance.
• Classify materials using physical properties such as density, melting point, boiling point, colour, hardness, and conductivity.
• Distinguish intensive and extensive physical properties and predict how they behave in different samples.

Learning Objectives

• Explain how the cardiovascular system transports oxygen, nutrients, and removes metabolic wastes.
• Describe how heart valves, blood vessels, and blood flow work together to support efficient circulation.
• Relate capillary exchange (filtration and reabsorption) to plasma movement and tissue needs.+ Show more

Learning Objectives

• Explain how physical barriers like skin and mucosa limit pathogen entry.
• Compare innate and adaptive immune defenses, including roles of macrophages, lymphocytes, and antibodies.
• Describe how antigen recognition and inflammation support immune responses and recovery.+ Show more

Learning Objectives

• Explain how chemical properties affect persistence in the environment and potential exposure routes
• Evaluate trade-offs between usefulness of everyday chemicals and health or environmental risks using evidence
• Describe safe handling and disposal choices based on exposure prevention and regulatory guidance

Learning Objectives

• Explain how energy from the Sun and Earth’s interior is transferred through radiation, conduction, and convection.
• Describe how energy gradients drive atmospheric and oceanic circulation and influence weathering and tectonic activity.
• Connect radioactive decay to long-term heat production, mantle convection, and volcanic activity.

Learning Objectives

• Explain how Earth’s rotation and revolution cause apparent daily and yearly motion of celestial objects.
• Use sky coordinates (altitude and azimuth) to describe where objects appear in the sky.
• Interpret observational patterns such as rising and setting, constellations, and retrograde motion.

Learning Objectives

• Select an appropriate graph type (scatterplot, histogram, line graph, or residual display) for a given data question.
• Construct graphs with correct axis scaling, units, labels, and (when needed) reasonable binning choices.
• Interpret patterns, trends, and outliers while recognizing when visual correlation may be misleading.+ Show more

Learning Objectives

• Define control criteria used to establish comparability in causal inference (isolation of variables, replication, baseline characterization, and reference conditions).
• Explain how controlled conditions strengthen causal claims and how uncontrolled variation or residual confounding weakens them.
• Connect data collection choices to the credibility of causal conclusions and model-based explanations, including limits from uncertainty.

Learning Objectives

• Explain why uncertainty is an expected part of scientific measurement and inference.
• Use interval estimates and confidence statements to communicate how reliable results are.
• Describe how effect sizes and likelihood statements help interpret and compare evidence.+ Show more

Learning Objectives

• Explain how residuals and diagnostic plots reveal whether a model matches experimental data
• Use goodness-of-fit ideas (including visual agreement and error patterns) to judge model consistency
• Identify common signs of problems such as heteroscedasticity, systematic divergence, or missing variables+ Show more

Learning Objectives

• Use dimensional analysis to check whether equations and computations are unit-consistent.
• Derive relationships by combining units and identifying which functional forms are plausible.
• Compute and interpret derived quantities (such as density, flux, and rates) while reporting correct units.+ Show more

Learning Objectives

• Define and distinguish between random and systematic uncertainties in measurements.
• Explain the significance of statistical descriptors such as standard deviation and standard error.
• Describe methods used to propagate uncertainty through calculations.+ Show more

Learning Objectives

• Understand how pigment complexes absorb light energy in the thylakoid membranes.
• Explain the process of photon-driven charge separation and electron flow through photosystems.
• Describe how high-energy electrons are transferred to electron acceptors and used to produce ATP and NADPH.+ Show more

Learning Objectives

• Understand key elements involved in gene regulation such as promoters, enhancers, silencers, transcription factors, and repressors.
• Describe how epigenetic modifications influence gene expression without changing DNA sequence.
• Recognize the role of regulatory networks and feedback loops in controlling gene activity.+ Show more

Learning Objectives

• Understand what enzymes are and their role as biological catalysts.
• Identify how enzymes lower activation energy to speed up reactions.
• Describe the importance of enzyme structure and substrate specificity.+ Show more

Learning Objectives

• Define acceleration and describe its relationship with speed.
• Interpret distance–time and speed–time graphs to identify patterns of acceleration.
• Differentiate between constant acceleration and changing acceleration using data patterns.

Learning Objectives

• Define heat transfer and work as pathways of energy transfer.
• Explain the difference between heat and work in terms of energy movement.
• Describe how energy changes involve the surroundings during physical and chemical changes.

Learning Objectives

• Define genetic drift and understand its role in evolution
• Identify events that cause genetic drift such as bottlenecks and founder effects
• Distinguish between genetic drift and natural selection+ Show more

Learning Objectives

• Understand how mass influences acceleration when a force is applied
• Distinguish between inertial mass and gravitational effects
• Apply the force–acceleration relationship in problem-solving

Learning Objectives

• Understand how the heart and lungs collaborate to deliver oxygen to the body
• Identify key components involved in cardiopulmonary function
• Explain the processes of pulmonary ventilation and cardiovascular transport+ Show more

Learning Objectives

• Understand what scientific models are and their purpose
• Learn how evidence from measurements supports models
• Recognize how models summarize patterns connecting variables+ Show more

Learning Objectives

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

Learning Objectives

• Identify and describe different types of seismic waves
• Understand seismic wave propagation and their characteristics
• Relate seismic wave travel times to Earth's interior structure+ Show more

Learning Objectives

• Define what a chemical reaction is and describe the basic process.
• Identify common types of chemical reactions such as combustion, synthesis, and decomposition.
• Read and interpret symbolic chemical equations representing reactions.+ Show more

Learning Objectives

• Understand the function of the hypothalamus in hormone regulation
• Describe how the pituitary gland responds to hypothalamic signals
• Identify key anatomical features involved in neuroendocrine control+ Show more

Learning Objectives

• Understand how dietary choices influence cellular functions and overall health.
• Identify key nutrients that affect physiological processes.
• Analyze evidence linking nutrition to chronic diseases and health outcomes.+ Show more

Learning Objectives

• Understand the principle that matter is neither created nor destroyed during chemical reactions.
• Recognize that atoms are rearranged during reactions, but their total number remains constant.
• Explain the importance of conserving atoms in understanding chemical processes.

Learning Objectives

• Understand the basic concepts of metabolism
• Distinguish between catabolic and anabolic pathways
• Comprehend how hormonal signals and nutrient availability influence metabolic priorities+ Show more

Learning Objectives

• Identify the basic parts of an atom: protons, neutrons, electrons
• Understand electron configurations and energy levels
• Explain how the periodic table organizes elements based on valence electrons+ Show more

Learning Objectives

• Understand the different types of particle arrangements in solids
• Differentiate between ionic, covalent, and molecular structures
• Explain how lattice organization affects material properties such as melting point and conductivity

Learning Objectives

• Understand and identify element symbols and their conventions.
• Learn how chemical formulas represent substances and their composition.
• Interpret chemical formulas like H2O, NaCl, and CaCO3 in scientific contexts.+ Show more

Learning Objectives

• Describe the fundamental particles that make up atoms, including protons, neutrons, and electrons.
• Explain electron configurations and how they relate to atomic properties and periodic table organization.
• Analyze models of atomic structure to predict properties such as metallic character and electronegativity.+ Show more

Learning Objectives

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