Greek Lyceum Grade 3 / Physics / Curriculum
Κρούσεις και ορμή: structured theory, worked examples, answered practice, and a mastery checklist for Greek Lyceum Grade 3.
Розділ
Ключові ідеї глави у зрозумілій послідовності перед практикою.
Define the system and identify how energy or momentum is transferred. Conservation applies to the correct system and time interval.
Write initial and final quantities before substituting numbers. This exposes losses, external work, and direction.
Energy describes an amount, while power describes its transfer rate. Do not compare systems using work alone when time matters.
For “Ελαστική κρούση”, 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 “Πλαστική κρούση”, 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 “Κεντρικές κρούσεις”, 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 “Σχετική κίνηση”, 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 “Διατήρηση ορμής”, 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.
In a safe test about “Ελαστική κρούση”, the first condition gives 12 units and the second 9. Which is greater, and what should be kept the same?
The first value is greater by 3 units. A fair test changes only one factor.
Explain “Ελαστική κρούση” in your own words and use a picture, objects, a table, or a simple measurement to support it.
A complete explanation connects the correct idea, a clear representation, and a sensible check.
Κρούσεις και ορμή
Вісім завдань від базових навичок до екзаменаційного рівня. Спочатку виконайте самостійно.
Record 7 safe observations about “Ελαστική κρούση” without writing a conclusion yet.
An observation is something seen, heard, or measured.
The response needs 7 specific observable or measurable statements, not guesses about cause.
Design a fair test for “Πλαστική κρούση”: what changes, what is measured, and which 6 things stay the same?
Change one factor only.
Full response: one changed factor, one measurable outcome, and 6 controlled conditions.
Measurements are 6, 3, and 9 units. Put them in a table, find the greatest, and the difference from the least.
Use condition and measurement headings.
Greatest 9, least 3, difference 6 units.
Sort examples of “Σχετική κίνηση” into two groups and state the sorting rule.
Each item should clearly match one group.
A full response gives two named groups, at least two examples in each, and an observable sorting rule.
Choose a suitable tool and unit to measure something connected with “Διατήρηση ορμής”.
Decide whether you measure length, time, mass, temperature, or volume.
The quantity, instrument, and unit must match, e.g. time-stopwatch-s or length-ruler-cm.
From data 8, 12, 16, predict the next value and explain the pattern.
Look for the constant change +4.
20; +4.
Write 6 safety rules for a simple activity about “Ελαστική κρούση” and explain the risk each reduces.
Link each rule to a reason.
A full response gives 6 specific rules, each linked to a risk, and requires supervision where appropriate.
Data A=7 and B=10. Write a conclusion, evidence, and one limitation about “Πλαστική κρούση”.
Do not claim more than the two values show.
B is 3 greater than A. The values support this, but two measurements alone do not prove a general rule.
Κρούσεις και ορμή
Шість різних завдань від базового рівня до складного з часом, підказками та відповідями.
Homework 1: Record 3 safe observations about “Ελαστική κρούση” without writing a conclusion yet.
An observation is something seen, heard, or measured.
The response needs 3 specific observable or measurable statements, not guesses about cause.
Homework 2: Design a fair test for “Πλαστική κρούση”: what changes, what is measured, and which 2 things stay the same?
Change one factor only.
Full response: one changed factor, one measurable outcome, and 2 controlled conditions.
Homework 3: Measurements are 9, 4, and 13 units. Put them in a table, find the greatest, and the difference from the least.
Use condition and measurement headings.
Greatest 13, least 4, difference 9 units.
Homework 4: Sort examples of “Σχετική κίνηση” into two groups and state the sorting rule.
Each item should clearly match one group.
A full response gives two named groups, at least two examples in each, and an observable sorting rule.
Homework 5: Choose a suitable tool and unit to measure something connected with “Διατήρηση ορμής”.
Decide whether you measure length, time, mass, temperature, or volume.
The quantity, instrument, and unit must match, e.g. time-stopwatch-s or length-ruler-cm.
Homework 6: From data 4, 9, 14, predict the next value and explain the pattern.
Look for the constant change +5.
19; +5.
35 хвилин / 30 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. Record 8 safe observations about “Ελαστική κρούση” without writing a conclusion yet.
2 балівThe response needs 8 specific observable or measurable statements, not guesses about cause.
2. Design a fair test for “Πλαστική κρούση”: what changes, what is measured, and which 2 things stay the same?
3 балівFull response: one changed factor, one measurable outcome, and 2 controlled conditions.
3. Measurements are 7, 4, and 11 units. Put them in a table, find the greatest, and the difference from the least.
3 балівGreatest 11, least 4, difference 7 units.
4. Sort examples of “Σχετική κίνηση” into two groups and state the sorting rule.
4 балівA full response gives two named groups, at least two examples in each, and an observable sorting rule.
5. Choose a suitable tool and unit to measure something connected with “Διατήρηση ορμής”.
4 балівThe quantity, instrument, and unit must match, e.g. time-stopwatch-s or length-ruler-cm.
6. From data 9, 14, 19, predict the next value and explain the pattern.
4 балів24; +5.
7. Write 2 safety rules for a simple activity about “Ελαστική κρούση” and explain the risk each reduces.
5 балівA full response gives 2 specific rules, each linked to a risk, and requires supervision where appropriate.
8. Data A=8 and B=12. Write a conclusion, evidence, and one limitation about “Πλαστική κρούση”.
5 балівB is 4 greater than A. The values support this, but two measurements alone do not prove a general rule.
Розділ
Джерела програми; порядок тем уточнюйте у школі та викладача.
Physics
Greek Lyceum Grade 3: 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.
