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Grade 7 revision

Light Energy

Rebuild the chapter shape, scan the key points, then open one focused practice step.

Grade 7PhysicsLight Energy

Flashcards Mind map Practice check

Topics: 4
Recall: 20
Cards: 28
Notes: 24

Revision workspace

Rebuild the chapter in one pass

4 topics

Revision plan

Use this order

4 steps / 4 topics

Recover the chapter map
Refresh the chapter structure first.
Open lesson
Lock definitions
Check the core terms before writing.
Flashcards
Scan short notes
Take one quick pass through formulas and reminders.
Open notes
Prove readiness
Finish with one focused chapter check.
Chapter test

Chapter revision sheet

One-pass review

4 topics

Open notes Practice chapter

Must know

1Reflection is the bouncing back of light from a surface. The angle of incidence equals the angle of reflection.
2Incident ray, reflected ray, and normal are used to describe reflection.
3Draw the normal at the point where the ray hits the mirror, then measure both angles from the normal.
4A smooth mirror gives regular reflection and forms a clear image.

Formula / process

1Reflection is the bouncing back of light from a surface. The angle of incidence equals the angle of reflection.
2Angles of incidence and reflection are measured from the normal.
3A plane mirror forms a virtual, erect image of the same size as the object, with lateral inversion.
4The image appears behind the plane mirror, not on its surface.

Exam traps

1Students may measure the angle from the mirror surface.
2Angles of incidence and reflection are measured from the normal.
3Is your angle marked between the ray and the normal?
4Students may say the image is on the mirror surface.

Answer frame

Start with the exact keyword or formula before adding explanation.
Use one example, diagram cue, observation, or substitution to support the answer.
For 3 marks: definition, reason, and one supporting point.
For 5 marks: setup, method/process, example, conclusion, and final check.

Exam strategy

Write to the mark pattern

4 focus areas

Practice written answers Chapter test

Likely prompts

1Definition-with-unit questions followed by one reason or example.
2Numerical questions where formula, substitution, and unit carry marks.
3Diagram or process questions: ray paths, circuits, forces, energy flow, or graphs.

Keywords to include

1Reflection and Laws of Reflection
2Meaning
3One-minute summary
4Mirror
5Normal
6Incident ray

Avoid these traps

1Students may measure the angle from the mirror surface.
2Angles of incidence and reflection are measured from the normal.
3Mark angles from the normal, not the mirror.
4Label i and r clearly.

Answer frame by marks

3 marks

Define the term, write the unit or formula, then add one relevant example.

5 marks

Draw or state the setup, explain the principle, apply the formula/process, and finish with unit or conclusion.

Diagram checks

Quick visual checks

4 quick checks

Notes Write answers

A ray box shining onto a flat mirror with reflected light and a protractor shape showing equal angles.

DiagramReflection and Laws of Reflection

Reflection ray diagram model

Use the labels to connect each part of reflection ray diagram to the physics idea.

Mirror

Reflecting surface.

Normal

Perpendicular line at the point of incidence.

Check: Mark angles from the normal, not the mirror.

A toy object and its symmetric image in a plane mirror, with matching floor tiles showing equal distance.

DiagramPlane Mirror

Plane mirror image model

Use the labels to connect each part of plane mirror image to the physics idea.

Object

In front of mirror.

Mirror

Flat reflecting surface.

Check: Use the words virtual, erect, same size, and laterally inverted.

A bright light pulse moving through a transparent path toward a target screen, showing rapid travel of light.

DiagramSpeed of Light

Light and sound timing model

Use the labels to connect each part of light and sound timing to the physics idea.

Lightning

Produces light and sound.

Light

Travels very fast.

Check: Use the lightning-thunder example for comparison.

Red, green, and blue light beams overlapping on a screen with prism and colour filters nearby.

DiagramColours of Light

RGB colour addition model

Use the labels to connect each part of rgb colour addition to the physics idea.

Red

Primary colour of light.

Green

Primary colour of light.

Check: Do not use paint-mixing rules for light.

Practice next

Choose one chapter check

Chapter scope

Focused practice

Question bank

13924 questions

9580 MCQs and 4344 written prompts are ready for one focused chapter pass.

9580 MCQs4344 LAQs13924 total

MCQs LAQs Chapter test

Chapter pack

Chapter review pack

One pack

Light reflection, plane mirrors, speed of light, and colours explain how light travels and is seen.

6 notes4 cards12 MCQs8 LAQs

Notes Flashcards MCQs LAQs Chapter test

Recall and reinforce

Keep the chapter active

Optional support

Review session

Recall sprint

28 cards

Run one focused recall pass, mark weak cards honestly, then switch to notes or practice while the idea is still fresh.

cards

notes

topics

Four-step loop

Warm up
Flip cards
Repair weak
Practice

Session actions

Switch formats when recall slows down, then test the same scope before leaving revision.

Open notes Open revision Lesson Practice scope

Study method

Scan, filter, connect

24 Notes / 4 topics

Use compact notes to search for one concept, filter by topic, then connect the point back to practice questions.

Notes

Cards

Topics

Open flashcards Open revision

Method loop

Search one idea
Look for a definition, formula, contrast, or common mistake.
Filter the topic
Narrow to the exact topic before moving into broader chapter review.
Convert to recall
After scanning notes, switch to flashcards or practice to retrieve it.

Flashcard review

Card 1 of 28

0 reviewed cards

Mind map

Light Energy at a glance

4 topics

Revision Test

Topics

Recall

Cards

Topic 1
Reflection and Laws of Reflection
Incident ray, reflected ray, and normal are used to describe reflection.
Lesson Notes Cards MCQs
Topic 2
Plane Mirror
The image in a plane mirror appears behind the mirror at the same distance as the object is in front.
Lesson Notes Cards MCQs
Topic 3
Speed of Light
The speed of light is about 300,000,000 metres per second in vacuum.
Lesson Notes Cards MCQs
Topic 4
Colours of Light
Colour addition mixes coloured light; colour subtraction happens when materials absorb some colours.
Lesson Notes Cards MCQs

Opening your study space…

Light Energy

Light Energy revision totals

Rebuild the chapter in one pass

Use this order

Recover the chapter map

Lock definitions

Scan short notes

Prove readiness

One-pass review

Write to the mark pattern