IGCSE Year 11 / Physics / Curriculum
Nuclear physics: structured theory, worked examples, answered practice, and a mastery checklist for IGCSE Year 11.
Розділ
Ключові ідеї глави у зрозумілій послідовності перед практикою.
Modern physics uses models tested by spectra, scattering, decays, and detectors. Distinguish an observation from its interpretation.
A single nuclear decay is random, but large samples follow predictable laws. Use half-life or an exponential relation with the correct scale.
In atomic and nuclear processes, check energy, momentum, charge, and particle numbers where applicable. Do not mix eV and J without conversion.
For “Alpha, beta and gamma radiation”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.
For “Half-life”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.
For “Radiation safety”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.
For “Nuclear equations where applicable”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.
For “Uses and dangers of radioactivity”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.
Physics
Дотримуйтесь методу крок за кроком і перевіряйте обґрунтування.
A sample starts with 80 active nuclei and 4 half-lives pass. How many are expected?
N = 5
Before calculating, explain the key idea from “Alpha, beta and gamma radiation” and which conditions must be checked.
The answer should show not only which rule is used for “Alpha, beta and gamma radiation”, but also why it is valid here.
Nuclear physics
Вісім завдань від базових навичок до екзаменаційного рівня. Спочатку виконайте самостійно.
A sample starts with 288 nuclei. How many are expected after three half-lives?
Halve three times.
36.
Structure a solution for “Half-life”: givens, SI units, law, substitution, and interpretation.
State the law before substituting numbers.
A full solution states symbols/units, selects a valid law for “Half-life”, shows substitution and calculation, and interprets the result.
Identify three uncertainty sources in measuring “Radiation safety” and improve each one.
Consider instrument resolution, reaction time, repeats, and controls.
A full response links each specific error source to a targeted improvement and identifies random or systematic impact.
Plan a suitable graph for “Nuclear equations where applicable” data and explain how to obtain a gradient or relationship.
Put the independent variable on x and dependent variable on y.
A full response labels axes/units, uses a suitable scale and best fit; gradient uses a large triangle and is interpreted with units.
Check whether a result for “Uses and dangers of radioactivity” is sensible using units, order of magnitude, and a limiting case.
A check should not merely repeat the same calculation.
A full check confirms dimensions/units, compares expected magnitude, and tests behaviour when one variable becomes very small or large.
Connect “Alpha, beta and gamma radiation” to energy conservation or a force/field model and justify the choice.
Define the system and interactions.
A full response defines the system, describes transfer or interaction, applies the appropriate model, and states losses or limitations.
Write a multi-step exam response about “Half-life” with calculation and evaluation.
Separate givens, model, calculation, result, and evaluation.
A full response includes an appropriate diagram/model, laws, algebraic rearrangement, SI substitution, suitably precise result, and evaluation of assumptions.
Compare two methods for investigating “Radiation safety” and select the more reliable using criteria.
Use accuracy, repeatability, control, and safety.
The choice must use at least three comparable criteria and acknowledge one trade-off or limitation.
Nuclear physics
Шість різних завдань від базового рівня до складного з часом, підказками та відповідями.
Homework 1: A sample starts with 144 nuclei. How many are expected after three half-lives?
Halve three times.
18.
Homework 2: Structure a solution for “Half-life”: givens, SI units, law, substitution, and interpretation.
State the law before substituting numbers.
A full solution states symbols/units, selects a valid law for “Half-life”, shows substitution and calculation, and interprets the result.
Homework 3: Identify three uncertainty sources in measuring “Radiation safety” and improve each one.
Consider instrument resolution, reaction time, repeats, and controls.
A full response links each specific error source to a targeted improvement and identifies random or systematic impact.
Homework 4: Plan a suitable graph for “Nuclear equations where applicable” data and explain how to obtain a gradient or relationship.
Put the independent variable on x and dependent variable on y.
A full response labels axes/units, uses a suitable scale and best fit; gradient uses a large triangle and is interpreted with units.
Homework 5: Check whether a result for “Uses and dangers of radioactivity” is sensible using units, order of magnitude, and a limiting case.
A check should not merely repeat the same calculation.
A full check confirms dimensions/units, compares expected magnitude, and tests behaviour when one variable becomes very small or large.
Homework 6: Connect “Alpha, beta and gamma radiation” to energy conservation or a force/field model and justify the choice.
Define the system and interactions.
A full response defines the system, describes transfer or interaction, applies the appropriate model, and states losses or limitations.
50 хвилин / 40 балів
Повний тест із таймером, балами та зразками відповідей.
Start the timer when ready, work without notes, show every step, and open model answers only after finishing.
1. A sample starts with 112 nuclei. How many are expected after three half-lives?
2 балів14.
2. Structure a solution for “Half-life”: givens, SI units, law, substitution, and interpretation.
3 балівA full solution states symbols/units, selects a valid law for “Half-life”, shows substitution and calculation, and interprets the result.
3. Identify three uncertainty sources in measuring “Radiation safety” and improve each one.
3 балівA full response links each specific error source to a targeted improvement and identifies random or systematic impact.
4. Plan a suitable graph for “Nuclear equations where applicable” data and explain how to obtain a gradient or relationship.
4 балівA full response labels axes/units, uses a suitable scale and best fit; gradient uses a large triangle and is interpreted with units.
5. Check whether a result for “Uses and dangers of radioactivity” is sensible using units, order of magnitude, and a limiting case.
4 балівA full check confirms dimensions/units, compares expected magnitude, and tests behaviour when one variable becomes very small or large.
6. Connect “Alpha, beta and gamma radiation” to energy conservation or a force/field model and justify the choice.
4 балівA full response defines the system, describes transfer or interaction, applies the appropriate model, and states losses or limitations.
7. Write a multi-step exam response about “Half-life” with calculation and evaluation.
5 балівA full response includes an appropriate diagram/model, laws, algebraic rearrangement, SI substitution, suitably precise result, and evaluation of assumptions.
8. Compare two methods for investigating “Radiation safety” and select the more reliable using criteria.
5 балівThe choice must use at least three comparable criteria and acknowledge one trade-off or limitation.
9. Create an extension question about “Nuclear equations where applicable”, a prediction, and a data-collection plan.
5 балівA full response gives a testable question, justified prediction, independent-variable range, repeats, and an analysis method.
10. A sample starts with 240 nuclei. How many are expected after three half-lives?
5 балів30.
Розділ
Джерела програми; порядок тем уточнюйте у школі та викладача.
Physics
IGCSE Year 11: структурований маршрут з математики та фізики з розділами, практикою і наступними кроками.
Структура відповідає підручнику й допомагає організувати вивчення теми.
Теми, де найчастіше виникають помилки або потрібна додаткова практика.
З чого почати: підручник, daily material, PDFs, videos і worked examples.
Цільова практика перед full tests, щоб coverage було зрозумілим.
Як вимірювати прогрес у главі і коли додавати її до загального mock.
Що робити після глави і як вона пов'язана з наступним розділом.
Примітка: офіційну екзаменаційну програму кожного року завжди уточнюйте у школі, викладача та за поточними офіційними джерелами.
