System and transfer
Define the system and identify how energy or momentum is transferred. Conservation applies to the correct system and time interval.
Greek Gymnasium Grade 2 / Physics / Curriculum
Ενέργεια: structured theory, worked examples, answered practice, and a mastery checklist for Greek Gymnasium Grade 2.
Unit
The essential chapter ideas in a clear sequence before practice.
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.
Physics
Follow the method step by step and check why every step is valid.
A 5 kg body moves at 4 m/s. Find its kinetic energy and momentum.
Physics
Learn to read the question, choose the formula, write units, and explain the result.
The structure follows the official textbook layout and is used to organise study.
The areas that usually create mistakes or need extra revision.
Ek = 40 J, p = 20 kg·m/s
Before calculating, explain the key idea from “Έργο δύναμης” and which conditions must be checked.
The answer should show not only which rule is used for “Έργο δύναμης”, but also why it is valid here.
Ενέργεια
Try independently, use the hint if needed, then open the answer guide.
1. Explain the idea and give one correct foundation example for “Έργο δύναμης”.
Write known quantities in SI units, draw a diagram where useful, and state the law before substitution.
A complete answer links “Έργο δύναμης” to a physical law or model, correct units, and an interpretation.
2. Solve an application and show every intermediate step for “Κινητική ενέργεια”.
Write known quantities in SI units, draw a diagram where useful, and state the law before substitution.
A complete answer links “Κινητική ενέργεια” to a physical law or model, correct units, and an interpretation.
3. Compare a correct and an incorrect approach and justify the difference for “Δυναμική ενέργεια”.
Write known quantities in SI units, draw a diagram where useful, and state the law before substitution.
A complete answer links “Δυναμική ενέργεια” to a physical law or model, correct units, and an interpretation.
4. Create a short exam-style question and check your answer for “Μετατροπές ενέργειας”.
Write known quantities in SI units, draw a diagram where useful, and state the law before substitution.
A complete answer links “Μετατροπές ενέργειας” to a physical law or model, correct units, and an interpretation.
Where to start: textbook, daily material, PDFs, videos, and worked examples.
Targeted practice before full tests so coverage is clear.
How to measure progress in this chapter and when it enters a cumulative mock.
What to do after finishing the chapter and how it connects to the next unit.
Note: for the official examinable syllabus of each school year, always confirm with the school, tutor, and current Ministry/IEP announcements.