NCERT Solutions for Class 7 Science Chapter 4: Heat

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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
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).

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.

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.

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.

Chapter Related Links:

Heat Capacity	Hess’s Law of Constant Heat Summation	Heat engines
Latent Heat	Specific heat capacity	Heat transfer

Class 7 Science Study Guides:

CBSE Class 7 Science NCERT Textbook	NCERT Solutions	CBSE Class 7 Science Sample Paper

CBSE X Related Questions

1.
When a human egg is fertilized by a sperm having ‘Y’ chromosome, the zygote has the following combination of chromosomes:
- 44 + XX
- 22 + XX
- 44 + XY
- 22 + XY
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Briefly mention the steps in double-circulation through human heart.
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3.
In human beings, the implantation of fertilised egg takes place in which part of female reproductive system?
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Given below is a pyramid showing various trophic levels in an ecosystem:
(a) From the organisms listed below, identify which one is to be placed at which trophic level:
Deer, Grass, Lion, Snake, Rabbit
(b) Discuss the reason why primary consumers will have more energy as compared to secondary consumers?
(c) Why is the base of the pyramid broad?
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The natural sources of oxalic acid, lactic acid and methanoic acid respectively are:
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Assertion (A): Reflex actions do not involve thinking.
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- Assertion (A) is true, but Reason (R) is false.
- Assertion (A) is false, but Reason (R) is true.
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