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.
Which structure in a leaf is mainly responsible for gaseous exchange?

Xylem
Stomata
Phloem
Cuticle

View Solution

2.
Which of the following group is not 'biodegradable'?

Vegetable peels, dead leaves, paper
Cow dung, leather bag, water
Polythene bag, rubber band, ball pen
Paper, fruits, bones

View Solution

3.
Assertion (A): Ozone at higher levels of atmosphere is a product of UV radiation acting on oxygen molecule.
Reason (R): The higher energy of UV splits apart some molecular \( O_2 \).

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.

View Solution

4.
Assertion : Reaction of quick lime with water is an exothermic reaction. Reason (R): A large amount of heat is evolved on the reaction of quick lime and water.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.

View Solution

5.
Assertion : Bacteria produced as a result of asexual reproduction would be similar. Reason (R): There would be only minor differences between the bacteria generated due to small inaccuracies in DNA replication.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.

View Solution

6.
Assertion (A): Carbon shares its valence electrons with other atoms of carbon or with atoms of other elements.
Reason (R): The shared electrons belong to the outermost shells of both the atoms and lead to both atoms attaining the noble gas configuration.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.

View Solution

NCERT Solutions for Class 7 Science Chapter 4: Heat

NCERT Solutions for Class 7 Science Chapter 4

Class 7 Science Chapter 4 Heat: Important Topics

Measuring Temperature

Laboratory Thermometer

Transfer of Heat

CBSE X Related Questions

1.
Which structure in a leaf is mainly responsible for gaseous exchange?

2.
Which of the following group is not 'biodegradable'?

3.
Assertion (A): Ozone at higher levels of atmosphere is a product of UV radiation acting on oxygen molecule.
Reason (R): The higher energy of UV splits apart some molecular \( O_2 \).

4.
Assertion : Reaction of quick lime with water is an exothermic reaction. Reason (R): A large amount of heat is evolved on the reaction of quick lime and water.

5.
Assertion : Bacteria produced as a result of asexual reproduction would be similar. Reason (R): There would be only minor differences between the bacteria generated due to small inaccuracies in DNA replication.

6.
Assertion (A): Carbon shares its valence electrons with other atoms of carbon or with atoms of other elements.
Reason (R): The shared electrons belong to the outermost shells of both the atoms and lead to both atoms attaining the noble gas configuration.

Similar Science Concepts

Comments

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NCERT Solutions for Class 7 Science Chapter 4: Heat

NCERT Solutions for Class 7 Science Chapter 4

Class 7 Science Chapter 4 Heat: Important Topics

Measuring Temperature

Laboratory Thermometer

Transfer of Heat

CBSE X Related Questions

1.Which structure in a leaf is mainly responsible for gaseous exchange?

2.Which of the following group is not 'biodegradable'?

3.Assertion (A): Ozone at higher levels of atmosphere is a product of UV radiation acting on oxygen molecule. Reason (R): The higher energy of UV splits apart some molecular \( O_2 \).

4.Assertion : Reaction of quick lime with water is an exothermic reaction. Reason (R): A large amount of heat is evolved on the reaction of quick lime and water.

5.Assertion : Bacteria produced as a result of asexual reproduction would be similar. Reason (R): There would be only minor differences between the bacteria generated due to small inaccuracies in DNA replication.

6.Assertion (A): Carbon shares its valence electrons with other atoms of carbon or with atoms of other elements. Reason (R): The shared electrons belong to the outermost shells of both the atoms and lead to both atoms attaining the noble gas configuration.

Similar Science Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Which structure in a leaf is mainly responsible for gaseous exchange?

2.
Which of the following group is not 'biodegradable'?

3.
Assertion (A): Ozone at higher levels of atmosphere is a product of UV radiation acting on oxygen molecule.
Reason (R): The higher energy of UV splits apart some molecular \( O_2 \).

4.
Assertion : Reaction of quick lime with water is an exothermic reaction. Reason (R): A large amount of heat is evolved on the reaction of quick lime and water.

5.
Assertion : Bacteria produced as a result of asexual reproduction would be similar. Reason (R): There would be only minor differences between the bacteria generated due to small inaccuracies in DNA replication.

6.
Assertion (A): Carbon shares its valence electrons with other atoms of carbon or with atoms of other elements.
Reason (R): The shared electrons belong to the outermost shells of both the atoms and lead to both atoms attaining the noble gas configuration.