Chapter 7 of 10
Concept Maps
Heat — Concept Maps
Tamil Nadu Board · Class 9 · Science
3 concept maps of Heat for Tamil Nadu Board Class 9 Science, each also written out as a text outline. Maps: Chapter 7: Heat – Complete Concept Overview.
45 questions30 flashcards2 formulas & key relations5 concepts
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3 Concept Maps
Chapter 7: Heat – Complete Concept Overview
The map in words
- HEAT
- Effects of Heat
- Expansion
- Gases expand most
- Liquids expand less
- Solids expand least
- Change in State
- Solid to Liquid to Gas
- Change in Temperature
- Kinetic energy increases
- Chemical Changes
- Cooking food
- Expansion
- Transfer of Heat
- Conduction
- In solids
- No movement of molecules
- Copper is best conductor
- Convection
- In fluids
- Actual movement of fluid
- Sea breeze and land breeze
- Radiation
- Electromagnetic waves
- No medium needed
- Travels through vacuum
- Conduction
- Temperature Scales
- Celsius scale
- 0 to 100 degrees
- Fahrenheit scale
- 32 to 212 degrees
- Kelvin scale
- 273 to 373 K
- Absolute zero at 0 K
- Celsius scale
- Specific Heat Capacity
- Formula Q equals mcT
- Unit J per kg K
- Water has highest value
- Heat Capacity
- Formula C equals Q by T
- Unit J per K
- For whole body
- Change of State
- Melting and Freezing
- Boiling and Condensation
- Sublimation
- Latent Heat
- No temperature change
- Latent heat of fusion
- Latent heat of vaporisation
- Formula Q equals mL
- Effects of Heat
Heat Transfer Methods - Hierarchical Overview
The map in words
- Heat Transfer
- Conduction
- Solids only
- Molecular collisions
- Good conductors
- Copper
- Aluminum
- Iron
- Poor conductors
- Wood
- Plastic
- Air
- Daily applications
- Cooking utensils
- Thermometers
- Convection
- Fluids only
- Liquids and gases
- Requires movement
- Daily applications
- Hot air balloons
- Sea breezes
- Land breezes
- Chimneys
- Radiators
- Radiation
- No medium needed
- Works in vacuum
- Electromagnetic waves
- Speed of light
- Daily applications
- Sun heating Earth
- Dark clothes absorb
- White clothes reflect
- Polished airplane surfaces
- Conduction
Heat – Complete Chapter Overview
The map in words
- HEAT
- Effects of Heat
- Expansion
- Min in solids
- More in liquids
- Max in gases
- Change in State
- Solid to Liquid
- Liquid to Gas
- Change in Temperature
- Heat added raises temp
- Heat removed lowers temp
- Chemical Changes
- Cooking food
- Burning wood
- Expansion
- Transfer of Heat
- Conduction
- Only in solids
- No molecule movement
- Good conductors
- Bad conductors
- Convection
- In fluids
- Molecules move
- Convection currents
- Sea breeze Land breeze
- Radiation
- Electromagnetic waves
- No medium needed
- Travels in vacuum
- Black absorbs more
- Conduction
- Temperature Scales
- Celsius scale
- 0 to 100 degrees
- Fahrenheit scale
- 32 to 212 degrees
- Kelvin scale
- 273 to 373
- Absolute zero 0 K
- Celsius scale
- Specific Heat Capacity
- Formula Q equals mC delta T
- Unit J per kg K
- Water has highest
- Used as coolant
- Heat Capacity
- Formula C prime equals Q by delta T
- Unit J per K
- Change of State
- Melting
- Freezing
- Boiling
- Condensation
- Sublimation
- Latent Heat
- Hidden heat
- No temperature change
- Latent heat of fusion
- Latent heat of vaporization
- Formula Q equals mL
- Effects of Heat
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Explore DiagramsFrequently Asked Questions
What are the important topics in Heat for Tamil Nadu Board Class 9 Science?
Key topics in Heat include 1 Effects of Heat, 2 Transfer of Heat – Conduction, Convection, and Radiation, 3 Concept of Temperature and Temperature Scales, 4 Specific Heat Capacity. Study these first, then practise questions on each for Class 9 exams.
What do the concept maps for Heat show?
The 3 maps show how the ideas in Heat connect: Chapter 7: Heat – Complete Concept Overview; Heat Transfer Methods - Hierarchical Overview. Each map is also written out as an outline on this page.
How should I revise Heat for Class 9 exams?
Learn the core ideas first, then work through the 45 practice questions on Heat. Revise definitions regularly and use flashcards for quick recall before the exam.
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Heat
Practice Quiz
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Important Questions
Exam-style questions with answers
Revision Notes
Key points for last-minute revision
Formula Sheet
The chapter's formulas in one place
Chapter Summary
Understand the chapter at a glance
Flashcards
Quick-fire cards for active recall
Syllabus
What topics to cover
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