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Body, Cooking, Engines
The human body, cooking systems, and engines all involve multiple forms of thermal-energy transfer.
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Body, Cooking, Engines
Recommended for Class 10
Body, Cooking, Engines
Overview
The human body, cooking systems, and engines all involve multiple forms of thermal-energy transfer.
Human Body
The body exchanges energy using:
conduction; convection; radiation; evaporation.
Sweating cools the body because evaporation requires energy taken from the skin.
Cooking
Cooking can involve:
Conduction through metal pans.
Convection through hot liquids or air.
Radiation from grills or heating elements.
Engines
Engines convert energy into useful work, but some supplied energy becomes unwanted thermal energy.
Cooling systems remove excess heat and protect components.
Body, Cooking, Engines — Advanced
Revision Zone
60-Second Revision
Quick cues from this topic — use them for last-minute revision.
Body → several heat-transfer modes
Cooking → conduction + convection + radiation
Engine → useful energy + waste heat
- Definition
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Practice
PQ
Q1. Explain sweat cooling.
PQ
Q2. Name three cooking heat-transfer modes.
PQ
Q3. Explain engine cooling.
PQ
Q4. Explain waste heat.
PQ
Q5. Give a multiple-transfer example.
Exam Practice
EQ
Q1. Explain body cooling.
EQ
Q2. Describe pan heating.
EQ
Q3. Identify a convection example in cooking.
EQ
Q4. Explain engine waste heat.
EQ
Q5. Explain the role of cooling systems.
School-standard facts for Matric and Intermediate. Original explanations — not copied from textbooks.