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NCERT Solutions for Class 7 Science Chapter 4 Heat are provided in the article below. The important topics that are included in this chapter are:
- Hot and Cold
- Measuring Temperature
- Laboratory Thermometer
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Transfer of Heat
Download PDF: NCERT Solutions for Class 7 Science Chapter 4 Heat
NCERT Solutions for Class 7 Science Chapter 4
NCERT Solutions for Class 7 Science Chapter 4 Heat are provided in the PDF below:
Class 7 Science Chapter 4 Heat: Important Topics
Heat is one of the essential forms of energy for the survival of life on earth. Transfer of heat takes place from one body to another due to differences in temperature as per thermodynamics. We use heat energy for various activities like cooking, ironing, transportation, recreation, etc. Temperature is the measure of the hotness or coldness of the body. Celsius (C) or Fahrenheit (F) scale, or in Kelvins (K).
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Measuring Temperature
Temperature measurement is referred to as the process of measuring a current local temperature for immediate or later evaluation. Temperature is measured with the help of a device called a thermometer. The three units in which temperature is measured are Celsius, Fahrenheit, and Kelvin. Hence, there are three different scales for measuring temperature.
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Laboratory Thermometer
A laboratory thermometer, which is used for measuring temperatures other than the human body temperature, is colloquially known as the lab thermometer. It ranges from -10˚C to 110˚C. Laboratory thermometers are designed for lab purposes such as checking the boiling point, freezing point, or temperature of other substances.
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Transfer of Heat
Heat transfer, any or all of several kinds of phenomena, is considered a mechanism, that conveys energy and entropy from one location to another. The specific mechanisms are usually referred to as convection, thermal radiation, and conduction.
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