Grade 9 Worksheets

Learning Objectives

• Describe how distance and time relate to speed using a distance–time pattern
• Use changes in speed over time to identify acceleration
• Distinguish constant speed motion from changing speed motion in distance–time graphs

Learning Objectives

• Explain how quantitative measurements constrain scientific claims about motion, forces, energy transfer, and waves.
• Use models to describe patterns and connect variables in a claim, then judge how well the model matches evidence.
• Compare competing explanations by using accuracy, expected relationships, and stated assumptions.

Learning Objectives

• Explain what error bars and uncertainty bands represent in measurement data
• Use overlap (or lack of overlap) of uncertainty ranges to judge whether differences are meaningful
• Distinguish between random measurement noise and evidence of a trend across conditions+ Show more

Learning Objectives

• Explain how climate variability is identified by comparing many weather measurements over time
• Differentiate climate variability from persistent climate change
• Interpret how ocean-atmosphere shifts can change regional weather patterns+ Show more

Learning Objectives

• Explain how constraints limit design options in engineering problems
• Identify criteria for success and describe how criteria weighting affects a final design choice
• Compare designs by describing trade-offs among cost, time, materials, safety, and reliability

Learning Objectives

• Compare physical and chemical changes using energy transfer between a system and its surroundings.
• Explain endothermic and exothermic behavior based on temperature changes and direction of energy flow.
• Predict how energy transfer affects particle motion and arrangement during phase changes.+ Show more

Learning Objectives

• Identify common sources of uncertainty in scientific measurements and models
• Explain how uncertainty affects confidence in comparing results to a true value
• Distinguish between experimental variation and model simplifications as uncertainty sources+ Show more

Learning Objectives

• Identify how levers, wheel and axle, pulleys, inclined planes, and screws transfer forces to reduce effort or change direction.
• Explain the difference between ideal mechanical advantage and practical mechanical advantage when friction is present.
• Use relationships among input force, load, and displacement to reason about how simple machines affect work and energy.+ Show more

Learning Objectives

• Explain how work relates to energy transfer using force and distance.
• Compare how simple machines change the magnitude or direction of an applied force.
• Calculate mechanical advantage and interpret the trade-off between force and distance.

Learning Objectives

• Explain how observed velocity depends on the chosen frame of reference.
• Use vector addition to determine a relative velocity between two moving objects.
• Interpret how different frames can change calculated displacement, speed, and apparent acceleration.

Learning Objectives

• Identify influential women leaders from diverse backgrounds and understand their contributions to social and political change.
• Analyze stories of women champions for women's rights and reflect on their influence in contemporary activism.
• Recognize the importance of cultural diversity in leadership and advocacy, fostering respect and engagement in social justice causes.

Learning Objectives

• Understand the role of activism in promoting women's rights.
• Identify different methods used by grassroots and digital movements.
• Analyze the impact of activism on policy change and societal attitudes.+ Show more

Learning Objectives

• Reflect on the importance of gender equality and women's rights.
• Identify emerging issues and innovative solutions proposed by young activists worldwide.
• Develop critical thinking about global challenges related to gender equality.+ Show more

Learning Objectives

• Describe the process of photosynthesis and its main components.
• Identify inputs, outputs, and the steps involved in photosynthesis.
• Explain the role of pigments and chloroplasts in capturing light energy.+ Show more

Learning Objectives

• Explain the sequence of lunar phases and how they occur due to the Sun-Earth-Moon geometry.
• Describe how the fraction of the illuminated Moon affects its appearance and brightness.
• Predict the progression of lunar phases over the lunar month.+ Show more

Learning Objectives

• Understand the main types of tissues and their functions.
• Identify the structures and specialized cells of different tissue types.
• Describe how tissue organization contributes to organ function.+ Show more

Learning Objectives

• Explain how resistive losses and power factor reduce electrical system efficiency
• Compare metrics used to evaluate efficiency and operating cost in electrical systems
• Describe design choices that improve performance while meeting operational constraints

Learning Objectives

• Explain how magnets and moving electric charges create magnetic fields
• Use field line orientation to predict force direction on magnetic materials
• Relate current direction in a wire to magnetic field direction using right-hand rules

Learning Objectives

• Explain how slope on a displacement–time graph relates to velocity.
• Explain how slope on a velocity–time graph relates to acceleration.
• Use area under a velocity–time graph to determine displacement.+ Show more

Learning Objectives

• Explain how power relates to the rate of energy transfer
• Calculate or compare efficiency using input energy and useful output energy
• Interpret how energy losses affect practical machine performance+ Show more

Learning Objectives

• Explain how mechanical energy changes between kinetic and potential forms through work interactions
• Describe how non-conservative forces like friction convert mechanical energy into thermal energy
• Use energy bookkeeping to predict feasible speeds and heights for real situations+ Show more

Learning Objectives

• Identify how displacement, velocity, and acceleration are represented on motion graphs
• Use slope and area to calculate or interpret speed, acceleration, and displacement
• Explain what curved segments and changes in slope mean for motion over time+ Show more

Learning Objectives

• Identify the purpose of grounding, overcurrent protection, and proper insulation in preventing electrical hazards.
• Interpret labels on common electrical protective devices to determine their intended function.
• Explain how environmental conditions (moisture, outdoor use, and corrosion risk) affect safe installation choices.+ Show more

Learning Objectives

• Describe how to relate acceleration to velocity-time graphs for braking scenarios.
• Use net-force reasoning to connect forces to changes in motion.
• Apply the work-energy idea to predict how stopping distance changes with slope and friction.

Learning Objectives

• Explain how wind and solar variability affects electrical grid supply and demand balance.
• Describe how dispatch coordination and energy storage help manage intermittency.
• Evaluate how infrastructure choices influence economic viability and environmental outcomes.

Learning Objectives

• Describe how an electric motor converts electrical energy into mechanical work
• Explain how a generator produces electrical energy using electromagnetic induction
• Compare motor and generator functions based on energy flow in a simple system+ Show more

Learning Objectives

• Define speed, velocity, and acceleration using distance, displacement, time, and direction
• Distinguish scalar and vector quantities in motion problems
• Apply sign conventions and unit conversions to compare motions

Learning Objectives

• Interpret symptom descriptions, topology, and measurements to infer likely electrical fault types
• Differentiate evidence patterns consistent with open circuits, short circuits, and degraded components
• Use logical reasoning to connect instrument readings to restoration and safety implications+ Show more

Learning Objectives

• Explain how friction and drag oppose motion and convert mechanical energy into thermal energy
• Use coefficients of friction and drag coefficients to estimate resistance forces
• Identify how surface texture, normal force, relative speed, and air density affect friction and drag

Learning Objectives

• Use constant-acceleration equations to relate displacement, velocities, acceleration, and time.
• Apply a consistent sign convention to predict motion and stopping distance.
• Solve numerical word problems using substitution and correct units.+ Show more

Learning Objectives

• Describe how forces can change an object’s motion through push or pull interactions
• Differentiate between contact forces and non-contact forces using Alberta-style examples
• Explain how force magnitude and direction combine to predict the direction of motion using qualitative reasoning+ Show more

Learning Objectives

• Explain how voltage transformation supports efficient power transmission to consumers
• Describe how feeder topology and regional constraints affect reliability and capacity
• Predict how electrical faults can propagate through a power distribution network+ Show more

Learning Objectives

• Explain how net force is found by vector addition of forces acting on an object
• Predict motion changes using the relationship between net force, direction, and acceleration
• Determine when an object is in equilibrium using the idea of zero net force

Learning Objectives

• Define mechanical advantage as a ratio that compares load force to input force and/or input distance to load distance
• Calculate and interpret mechanical advantage for simple lever situations and pulley-based systems
• Explain how increased mechanical advantage often changes displacement and trade-offs in force and distance

Learning Objectives

• Explain how inertia affects whether the motion of an object changes when forces are applied
• Use Newton’s second law to predict how acceleration changes with net force and mass
• Apply Newton’s third law to real situations involving recoil and anchored objects+ Show more

Learning Objectives

• Describe how different body systems interact to maintain homeostasis.
• Explain feedback mechanisms, set points, and system crosstalk in physiological regulation.
• Analyze examples of thermoregulation, acid-base balance, and responses to stressors.

Learning Objectives

• Interpret molecular and phenotypic information to analyze inheritance patterns.
• Apply techniques such as genotype frequency analysis, PCR markers, and sequencing reads to identify genetic variants.
• Compare observed and expected trait distributions to detect linkage, heterozygosity, or selection.+ Show more

Learning Objectives

• Compare how series and parallel circuits distribute current and voltage across components.
• Predict brightness changes for loads connected in series versus parallel.
• Identify which circuit arrangement supports reliability when one component fails.

Learning Objectives

• Identify how voltage and current divide in mixed series-parallel circuits
• Determine equivalent resistance of common series and parallel combinations
• Trace current paths to predict how changing a branch affects the overall circuit

Learning Objectives

• Describe how particle arrangement and motion relate to solids, liquids, and gases
• Explain phase transitions using temperature, pressure, and energy changes
• Predict how environmental conditions affect the state of a substance+ Show more

Learning Objectives

• Identify observable properties of substances and describe how they are measured or noticed
• Classify materials using observable traits such as colour, hardness, conductivity, density, and solubility
• Distinguish observable properties from changes that depend on other conditions

Learning Objectives

• Explain how balanced chemical equation coefficients relate the relative amounts of reactants and products
• Use conservation of mass to reason about how total mass is distributed among substances in a reaction
• Convert coefficient ratios into mass estimates for simple reaction contexts

Learning Objectives

• Describe how linear and nonlinear components behave using resistance and current–voltage ideas
• Explain how temperature changes affect thermistors and power dissipation in resistors
• Identify how power ratings and operating limits help prevent circuit damage+ Show more

Learning Objectives

• Differentiate ionic, covalent, and metallic bonding based on electron interactions
• Explain how bonding type affects properties such as melting point and solubility
• Predict likely macroscopic behavior of substances from their bonding model+ Show more

Learning Objectives

• Predict likely products of common chemical reactions using reactant identities and typical reaction patterns.
• Apply conservation of atoms to check whether proposed products are consistent with balanced chemical change.
• Explain how oxidation and neutralization outcomes can be anticipated for environmental assessment.

Learning Objectives

• Explain how a change in magnetic flux induces an electromotive force (emf) in a conductor
• Predict how induced voltage direction and magnitude depend on the direction and rate of flux change
• Relate transformer action and generator output to step-up/step-down and transmission in power systems

Learning Objectives

• Match common electrical device ratings to supply characteristics for safe operation
• Identify protective measures that reduce electrical and fire risk in real settings
• Evaluate energy efficiency and environmental impact when choosing an electrical application+ Show more

Learning Objectives

• Explain how the particulate model describes solids, liquids, and gases using particle motion and spacing
• Use particle ideas to predict changes in diffusion, pressure, and temperature
• Identify how particle collisions relate to energy transfer and pressure