Grade 9 Science Worksheets

Learning Objectives

• Explain how momentum depends on mass and velocity and identify momentum units.
• Apply the idea that total momentum of a system is conserved when only internal forces act.
• Compare elastic and inelastic collisions by focusing on momentum conservation versus kinetic energy behavior.

Learning Objectives

• Explain how friction and drag act as opposing forces to relative motion
• Analyze how friction and drag can change acceleration in real-world situations
• Relate friction to contact conditions and normal force, and drag to speed and fluid resistance

Learning Objectives

• Understand the concept of momentum and how it depends on both mass and velocity.
• Recognize that in an isolated system, total momentum remains constant before and after interactions.
• Differentiate between elastic and inelastic collisions and their effects on momentum and energy.+ Show more

Learning Objectives

• Explain how wave speed relates to frequency and wavelength using v = fλ
• Compare how wave speed depends on medium for different wave types (e.g., sound vs. electromagnetic waves)
• Use wave relationships to predict how changes in frequency or wavelength affect wave propagation

Learning Objectives

• Explain how momentum depends on mass and velocity and use the momentum formula in reasoning.
• Apply the law of conservation of momentum to collisions and explosions when only internal forces act.
• Compare elastic and inelastic collisions by tracking momentum and kinetic energy outcomes.

Learning Objectives

• Understand how motion in a plane can be described using vector components.
• Analyze projectile trajectories and predict range, maximum height, and time of flight.
• Translate between component equations and combined two-dimensional motion.+ Show more

Learning Objectives

• Explain how land-use change, invasive species, pollution, and resource extraction can alter biodiversity and ecosystem functioning
• Interpret cause-and-effect relationships using empirical indicators (e.g., species abundance, water quality, oxygen levels)
• Evaluate trade-offs among conservation actions, provisioning services, and socioecological outcomes

Learning Objectives

• Decompose two-dimensional motion into independent perpendicular components of displacement and acceleration.
• Use component equations to predict projectile range, time of flight, and the height of the apex.
• Translate between vector descriptions of motion and parametric or component forms for projectile trajectories.

Learning Objectives

• Explain the difference between design criteria and constraints in engineering solutions
• Identify how measurable requirements and constraints guide feasible design choices
• Use models and evidence to connect design features to expected performance+ Show more

Learning Objectives

• Understand the importance of defining problems clearly in engineering design.
• Identify criteria for success and constraints in developing solutions.
• Learn how scientific principles guide the selection of feasible design approaches.+ Show more

Learning Objectives

• Analyze case studies related to land-use change and its effect on biodiversity.
• Interpret empirical data regarding deforestation and ecological consequences.
• Evaluate trade-offs between conservation efforts and human development.+ Show more

Learning Objectives

• Explain Newton’s third law using action-reaction force pairs between two interacting objects.
• Describe how equal-magnitude, opposite-direction forces affect the motion of each object separately.
• Use momentum ideas to predict what happens when objects push or collide.

Learning Objectives

• Understand how land-use changes like deforestation impact biodiversity.
• Analyze case studies related to ecosystem degradation.
• Interpret empirical data from environmental case studies.+ Show more

Learning Objectives

• Explain the importance of defining problems in engineering design
• Identify key criteria and constraints for designing solutions
• Understand how scientific principles guide design choices+ Show more

Learning Objectives

• Identify examples of action and reaction forces in everyday situations
• Describe the concept of equal and opposite forces between interacting objects
• Explain how forces act on different objects without canceling each other out

Learning Objectives

• Understand the key components involved in defining design criteria for engineering solutions.
• Identify how scientific principles influence the selection of feasible approaches.
• Recognize the importance of models and evidence in connecting features to expected performance.+ Show more

Learning Objectives

• Identify and describe the functions of basic cell organelles.
• Understand how nucleic acid sequences determine amino acid chains.
• Connect molecular coding and protein folding to organelle architecture.+ Show more

Learning Objectives

• Explain Newton’s third law by identifying action-reaction force pairs between two interacting objects
• Describe how equal and opposite forces act on different objects and do not cancel within one object
• Use the action-reaction idea to predict motion changes in real-world scenarios such as recoiling cannons and collisions

Learning Objectives

• Explain the hierarchical levels of organization in multicellular organisms (cells, tissues, organs, organ systems).
• Describe how structure at one biological level supports specific functions.
• Use cause-and-effect and evidence from statements or passages to connect levels of organization to organism-level outcomes.

Learning Objectives

• Understand Newton's third law and how forces occur in pairs between objects.
• Describe real-world examples of action-reaction forces and their effects on motion.
• Explain why paired forces act on different objects and do not cancel each other within a single object.+ Show more

Learning Objectives

• Explain how land-use change, invasive species, pollution, and resource extraction can reduce biodiversity.
• Interpret evidence from real-world examples (deforestation, coral reef degradation, agricultural runoff) to evaluate ecosystem impacts.
• Describe trade-offs between conservation goals, provisioning services, and socioecological outcomes.

Learning Objectives

• Explain how nucleic acid sequences determine amino acid chains and protein structures.
• Connect molecular coding and folding to organelle architecture such as ribosomes, endoplasmic reticulum, and mitochondria.
• Describe the relationship between macromolecular structure and cellular functions like transport and catalysis.+ Show more

Learning Objectives

• Understand the concepts of negative and positive feedback and their roles in maintaining internal stability.
• Identify and describe specific physiological feedback processes such as thermoregulation, blood glucose control, and osmoregulation.
• Explain set points, sensor-effector loops, and the timing differences between rapid and slow feedback responses.+ Show more

Learning Objectives

• Understand how wave speed relates to frequency and wavelength in different media.
• Identify the mathematical relationships governing wave properties.
• Explain how changes in frequency or wavelength affect wave propagation and dispersion.+ Show more

Learning Objectives

• Understand how nucleic acid sequences determine the three-dimensional structure of proteins that form cellular components.
• Explain the connection between molecular coding and organelle architecture such as ribosomes, endoplasmic reticulum, and mitochondria.
• Describe how structure relates to function in macromolecules like hemoglobin and membrane transport proteins.+ Show more

Learning Objectives

• Analyze how land-use change, invasive species, pollution, and resource extraction affect biodiversity and ecosystem functioning.
• Interpret empirical evidence from case-study examples to evaluate mitigation approaches.
• Explain trade-offs between conservation goals and provisioning services in real socioecological systems.

Learning Objectives

• Understand how land-use change, invasive species, pollution, and resource extraction affect biodiversity and ecosystems.
• Interpret empirical data from case studies like deforestation, coral reef degradation, and agricultural runoff.
• Evaluate approaches for mitigating environmental impacts to support ecosystem resilience.+ Show more

Learning Objectives

• Describe how nucleic acid sequences determine amino acid chains and three-dimensional protein structures.
• Connect molecular coding and folding to organelle architecture such as ribosomes, endoplasmic reticulum, and mitochondria.
• Explain how macromolecular structures influence cellular functions like protein synthesis and membrane transport.+ Show more

Learning Objectives

• Explain Newton’s third law using force pairs acting on different objects.
• Identify action–reaction forces in real scenarios such as recoil and collisions.
• Connect paired forces to changes in momentum for each object.

Learning Objectives

• Describe the concept of motion in a plane using vectors.
• Identify the components of displacement and acceleration in two dimensions.
• Explain projectile trajectories and how they can be predicted using vector analysis.+ Show more

Learning Objectives

• Understand the effects of deforestation on biodiversity.
• Identify key factors contributing to forest loss.
• Analyze data from case studies on land-use change.+ Show more

Learning Objectives

• Describe how nucleic acid sequences determine amino acid chains and three-dimensional protein structures.
• Connect molecular coding and folding to organelle architecture such as ribosomes, endoplasmic reticulum, and mitochondria.
• Identify functional roles of proteins like hemoglobin and membrane transport proteins in cells.+ Show more

Learning Objectives

• Explain how forces change an object’s motion by causing acceleration and changing velocity
• Differentiate between contact forces and field forces and give relevant examples
• Describe how force direction and magnitude are represented using vectors

Learning Objectives

• Explain how forces change an object’s state of motion using acceleration and velocity ideas
• Classify forces as contact forces or field forces and give relevant examples
• Use vector thinking to describe force magnitude and direction, including the idea of net force

Learning Objectives

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

Learning Objectives

• Explain how engineering design criteria and constraints guide the development of solutions
• Identify how scientific principles, models, and evidence connect design features to expected performance
• Use measurable requirements to justify whether a design meets safety and performance goals

Learning Objectives

• Understand the concepts of negative and positive feedback in physiological regulation.
• Identify examples of feedback mechanisms like thermoregulation, blood glucose control, and osmoregulation.
• Explain the roles of set points, sensors, and effectors in maintaining internal stability.+ Show more

Learning Objectives

• Analyze how land-use change, invasive species, pollution, and resource extraction affect biodiversity and ecosystems.
• Interpret empirical data from case studies such as deforestation, coral reef degradation, and agricultural runoff.
• Evaluate trade-offs among conservation efforts, provisioning services, and socioecological outcomes.+ Show more

Learning Objectives

• Analyze how land-use change, invasive species, pollution, and resource extraction impact biodiversity.
• Interpret case studies such as deforestation, coral reef degradation, and agricultural runoff.
• Evaluate trade-offs between conservation efforts, provisioning services, and socioecological outcomes.+ Show more

Learning Objectives

• Explain how friction and drag oppose relative motion and affect acceleration.
• Use the idea that friction depends on normal force and surface conditions.
• Describe how drag depends on an object’s speed and the surrounding fluid.+ Show more

Learning Objectives

• Explain how multicellular organisms are organized from cells to tissues, organs, and organ systems.
• Describe how specialized structures at smaller scales support functions at larger scales (support, transport, regulation, coordination).
• Use evidence from a scientific description to predict how changes at one level can affect higher levels of organization.

Learning Objectives

• Understand how deforestation affects biodiversity.
• Analyze case studies of human impacts on ecosystems.
• Interpret empirical data related to land-use change and habitat loss.+ Show more

Learning Objectives

• Explain Newton’s third law using the idea of force pairs acting on different objects
• Predict how forces affect the motion of each interacting object using momentum and direction
• Identify correct examples of action–reaction forces in real-world situations

Learning Objectives

• Explain how forces change an object’s state of motion through acceleration and changes in velocity.
• Distinguish between contact forces and field forces and give examples of each.
• Use force vectors to represent both magnitude and direction of forces.+ Show more

Learning Objectives

• Explain how wave energy can travel without the transfer of matter
• Use the relationship v = fλ to predict how frequency and wavelength affect wave speed in a given medium
• Compare how wave speed depends on medium and wave type (sound vs electromagnetic waves)+ Show more

Learning Objectives

• Decompose two-dimensional motion into perpendicular components and relate them to displacement and acceleration.
• Predict projectile outcomes (range, apex height, and time of flight) using independent x- and y-motion models.
• Translate between component equations and combined vector descriptions of motion.+ Show more

Learning Objectives

• Explain how forces affect an object’s motion by changing acceleration and/or velocity
• Differentiate contact forces from field forces and give examples of each
• Use vector ideas (magnitude and direction) to describe forces and combine multiple forces conceptually

Learning Objectives

• Understand how nucleic acid sequences determine amino acid chains and protein structures.
• Explain how macromolecular structures influence organelle architecture and cellular functions.
• Connect molecular coding and folding to specific cellular components like ribosomes, endoplasmic reticulum, and mitochondria.+ Show more