Class 7 Exam > Class 7 Videos > Science Class 7 (Old NCERT) > Quick Revision: Heat
Quick Revision: Heat Video Lecture | Science Class 7 (Old NCERT)
FAQs on Quick Revision: Heat Video Lecture - Science Class 7 (Old NCERT)
| 1. What is heat? |  |
Ans. Heat is a form of energy that is transferred between objects or systems due to a temperature difference.
| 2. How is heat transferred? | |
Ans. Heat can be transferred through conduction, convection, or radiation.
| 3. What are some common sources of heat? | |
Ans. Some common sources of heat include the sun, fire, electrical appliances, and the human body.
| 4. How does heat affect matter? | |
Ans. Heat can cause matter to change its state (solid, liquid, gas), expand or contract, and increase its temperature.
| 5. What is the unit of measurement for heat? | |
Ans. The unit of measurement for heat is the calorie or joule.
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Video Description: Quick Revision: Heat for Class 7 2025 is part of Science Class 7 (Old NCERT) preparation.
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