Prompt Pack
Grade 12
First Term
Second Term
Third Term
Grade 13
Second Term
Grade
12
Lesson 1.1 – Scientific Method & Scope of Physics (35 Prompts)
Foundation (1–10)
Describe the scientific method in simple steps.
Define observation in science.
What is a hypothesis? Give an example.
State what is meant by a scientific experiment.
Define scientific theory.
What is a scientific law?
Give one example of physics in daily life.
State difference between theory and law.
List two aims of physics.
Give an example of prediction in science.
Intermediate (11–23)
Explain why repeatability is important in experiments.
Describe controlled variables with an example.
Compare qualitative and quantitative observations.
Explain how measurement improves objectivity.
Describe a situation where scientific method is used to solve a real-world problem.
Differentiate between hypothesis and assumption.
Explain role of data analysis in scientific method.
Why must experiments be fair?
Describe how a model is used in physics.
Evaluate the reliability of data with an example.
Identify flaws in an experimental method of your own creation.
Explain why multiple trials are needed for accuracy.
Suggest improvements for a poorly designed experiment.
Advanced (24–35)
Design a full investigation using scientific method for measuring gravity.
Analyse limitations of scientific method in complex systems.
Discuss role of peer review in science.
Evaluate difference between correlation and causation.
Create a detailed experimental plan including risk assessment.
Compare deductive and inductive reasoning in physics.
Explain sources of bias in scientific research.
Critically analyse a hypothetical set of experimental data.
Write a full conclusion and evaluation for an experiment.
Suggest improvements for experimental accuracy in high-precision physics.
Discuss ethical considerations in scientific experimentation.
Analyse how modern technology improves scientific investigations.
Lesson 1.2 – Physical Quantities & SI Units (35 Prompts)
Foundation (1–10)
Define physical quantity.
Give two examples of scalar quantities.
Give two examples of vector quantities.
List seven SI base quantities.
What is the unit of time?
State unit of electric current.
What is a derived quantity?
Convert 2 km into meters.
Convert 300 cm into meters.
Define SI prefix.
Intermediate (11–23)
Convert 5000 g into kilograms.
List three derived units and formulas.
Express 2 hours into seconds.
Convert 4.2 × 10⁵ mm into meters.
Explain importance of standard units.
Determine the SI unit of energy from its formula.
Explain difference between accuracy and precision.
Evaluate importance of unit consistency in calculations.
Create five examples of unit conversions and solve them.
Express speed in base units.
Convert 3 m/s into km/h.
Explain consequences of incorrect unit usage in experiments.
Convert 1.2 × 10⁶ J into MJ.
Advanced (24–35)
Show how Newton (N) is derived from base units.
Convert complex units: kg·m²/s³ into watts.
Create your own multi-step conversion problem.
Analyse a physics formula and identify base units of each term.
Convert bar, atm, and Pa and compare.
Evaluate SI vs non-SI units in scientific communication.
Derive unit of gravitational constant G.
Solve unit conversion with scientific notation and multiple dimensions.
Determine dimensional equivalence of two derived units.
Explain role of measurement standards in metrology.
Convert 1 eV into Joules and explain its significance.
Convert 120 km/h into m/s and mph.
Lesson 1.3 – Dimensions & Dimensional Analysis (35 Prompts)
Foundation (1–10)
What are dimensions?
Write dimensions of velocity.
Write dimensions of force.
Give dimensional formula of acceleration.
Define dimensional homogeneity.
Dimensional formula for work.
Identify whether pressure has dimensions.
Give one use of dimensional analysis.
State dimensions of energy.
Write dimensions of density.
Intermediate (11–23)
Show that momentum has dimensions MLT⁻¹.
Check dimensional correctness: s = ut + ½at².
Find dimensions of power.
Show if equation KE = ½mv³ is correct dimensionally.
Write dimensional formula for gravitational potential energy.
Use dimensional analysis to predict form of wave velocity.
Derive dimensions of modulus of elasticity.
Identify dimensionless quantities.
Show pressure = force/area dimensionally.
Determine units of constant in F = kx.
Check dimensional consistency of Bernoulli’s equation.
Derive dimensional formula for surface tension.
Analyse dimensional correctness of physics formula of your choice.
Advanced (24–35)
Derive formula for period of a pendulum using dimensions.
Explain why dimensional analysis cannot determine numerical constants.
Analyse formula involving trigonometric functions.
Use dimensional method to derive speed of sound.
Check validity of complex electromagnetism formula dimensionally.
Analyse dimensions of Planck’s constant.
Derive dimensions of viscosity.
Show Rayleigh’s method for a physical relationship.
Create your own formula and test its dimensional validity.
Evaluate limitation of dimensional methods in multi-variable systems.
Analyse dimensional impact of changing unit systems.
Discuss how dimensional analysis supports physical intuition.
Lesson 1.4 – Measuring Instruments & Errors (35 Prompts)
Foundation (1–10)
Define least count.
What is zero error?
Name two measuring instruments.
Define parallax error.
Give two examples of systematic errors.
What is random error?
Define precision.
Define accuracy.
Identify least count of a meter rule.
Name instrument used to measure small diameters.
Intermediate (11–23)
Calculate least count of screw gauge.
Describe how to correct zero error.
Calculate % error for L = 20 ± 0.1 cm.
Explain difference between systematic and random errors.
Sketch Vernier scale reading.
Determine true measurement from faulty instrument.
Analyse environmental factors affecting measurement.
Identify sources of error in time measurement.
Compare precision of micrometer vs Vernier.
Explain why repeated measurements reduce random error.
Discuss significance of significant figures.
Interpret a set of inconsistent readings.
Calculate combined uncertainties.
Advanced (24–35)
Derive formula for propagation of errors.
Evaluate experiment accuracy using uncertainty tables.
Suggest improvements for experimental precision.
Analyse multi-step measurement problem.
Explain calibration and its importance.
Design experiment with minimal systematic error.
Use uncertainty analysis for theoretical vs experimental comparison.
Explain limitations of analogue vs digital instruments.
Analyse reliability of dataset using statistical methods.
Explain bias and drift in instruments.
Evaluate experimental design for measurement validity.
Explain how metrology evolves with modern technology.
Lesson 1.5 – Vectors & Resolution (35 Prompts)
Foundation (1–10)
Define vector.
Give three examples of vectors.
Define magnitude.
Define direction.
State head-to-tail rule.
Draw a 5-unit vector.
Define scalar.
Give example of vector addition.
State unit vector.
Identify vector from diagram.
Intermediate (11–23)
Resolve force at 30° into components.
Add two vectors graphically.
Compare parallelogram and triangle methods.
Calculate resultant of 6 N and 8 N at right angle.
Compute magnitude of vector (3,4).
Determine direction of vector (5,5).
Explain unit vector notation.
Convert vector into i, j components.
Subtract vectors geometrically.
Analyse forces in equilibrium.
Determine angle between two vectors.
Solve vector addition with three forces.
Represent displacement vectors in coordinate plane.
Advanced (24–35)
Solve vector problem involving tension.
Compute dot product and interpret physically.
Use vectors to analyse projectile motion.
Solve vector triangle for equilibrium.
Determine resultant of multiple vectors algebraically.
Analyse relative velocity using vectors.
Discuss vector resolution in inclined plane systems.
Evaluate 3D vector addition.
Solve complex vector polygon.
Use vectors to determine centre of mass.
Apply vectors in torque calculations.
Analyse force systems using vector diagrams.
Lesson 1.6 – Graphs & Data Interpretation (35 Prompts)
Foundation (1–10)
Define graph.
What is dependent variable?
What is independent variable?
Define slope.
Define intercept.
Identify linear graph.
State what area under v–t graph represents.
Draw sample coordinate axes.
Label axes for displacement–time graph.
Distinguish between straight and curved graphs.
Intermediate (11–23)
Determine slope from sample graph.
Interpret non-linear graph.
Sketch velocity–time graph for constant acceleration.
Analyse graph with changing gradient.
Explain significance of area under curve.
Identify anomalies in graph.
Compare two motion graphs.
Construct best-fit line.
Determine average velocity from graph.
Use graph to predict future value.
Explain importance of proper scaling.
Interpret position–time data.
Create graph from given dataset.
Advanced (24–35)
Analyse piecewise velocity–time graph.
Determine instantaneous velocity from tangent.
Compare acceleration from two different graphs.
Analyse experimental scatter and suggest trend.
Apply linearisation techniques.
Discuss uncertainty representation on graphs.
Evaluate experimental validity using graph shape.
Interpret log–log or semi-log graph.
Extract equation of best-fit line mathematically.
Analyse graphical anomalies to identify systematic error.
Create multi-graph comparison.
Use graphs to verify physical laws (e.g., Hooke, Ohm).
වියාචනය (Disclaimer)
Idasara Academy ඉගෙනුම් සම්පත් නිර්මාණය කර ඇත්තේ සිසුන්ට මගපෙන්වීම, පුහුණුව සහ අධ්යයන උපායමාර්ග ලබාදී සහයෝගය දැක්වීමටය.
කෙසේ වෙතත්, සියලුම විභාග සහ නිල අවශ්යතා සඳහා, සිසුන් අනිවාර්යයෙන්ම ශ්රී ලංකා අධ්යාපන අමාත්යාංශයේ, අධ්යාපන ප්රකාශන දෙපාර්තමේන්තුව විසින් ප්රකාශයට පත් කරන ලද නිල පෙළපොත් සහ සම්පත් පරිශීලනය කළ යුතුය.
ජාතික විභාග සඳහා අන්තර්ගතයේ නිල බලය ලත් මූලාශ්රය වනුයේ රජය විසින් නිකුත් කරනු ලබන මෙම ප්රකාශනයි.