NCERT Solutions for Class 7 Science Chapter 3 Question Answers FREE PDF Download
Unlock the comprehensive study with Vedantu through class 7 science chapter 3 NCERT Solutions. This gives access to the class 7 science chapter 3 question answers PDF elucidating fundamental principles crucial for understanding the subject's intricacies and topics such as temperature measurements, thermometers, heat transfer, etc.
By accessing class 7th science chapter 3, students gain comprehensive insights into the core concepts outlined in the curriculum. With a focus on clarity and depth, these resources serve as indispensable tools for students navigating through science class 7 science chapter 3 heat. NCERT Solutions are prepared by Vedantu experts according to the revised class 7 science syllabus.
Glance on NCERT Solutions For Class 7 Science Chapter 3
Class 7th science chapter 3 embarks on a fascinating journey to understand the fundamental concepts of heat and its various aspects.
Heat is a type of energy that causes a substance to become hot. In the winter, it is typical to feel cold inside the house and warm outside when exposed to the sun's rays.
In Heat Class 7 questions and answers, we come across various concepts, some of which are hot and others cold, such as when a frying pan on a hot gas burner becomes heated while the pan's handle remains cool.
Class 7 Science Chapter 3 Heat explains that the temperature of an object is the degree of hotness or coldness of the object.
Science Chapter 3 class 7 question answers can help students analyse their level of preparation and understanding of concepts.
Aspirants can download Heat Chapter Class 7 PDF questions and answers and refer the notes to their friends to make learning more gratifying.
Students, through the notes provided, will be able to gain crucial insight into the chapters. The best teachers prepared NCERT Solution for class 7 science chapter 3's questions and answers, which were easy to understand.
This chapter deals with topics such as hot and cold temperatures, measuring temperature, laboratory thermometers, and heat transfer.
Class 7 science chapter 3 topics are included according to the revised academic year 2024-25 syllabus.
1. State similarities and differences between the laboratory thermometer and the clinical thermometer.
Ans: Similarities include the use of mercury and the measurement of temperature.
Differences include clinical thermometers have a kink to prevent the temperature from dropping, but laboratory thermometers do not have a kink.
In comparison to clinical thermometers, the range of a laboratory thermometer is extremely broad.
2. Give two examples each of conductors and insulators of heat.
Ans:
3. Fill in the blanks:
a. A cold steel spoon is dipped in a cup of hot milk. It transfers heat to its other end by the process of ________.
Ans: Conduction.
b. Temperature is measured in degrees _________.
Ans: Celsius.
c. No medium is required for transfer of heat by the process of _________.
Ans: radiation.
d. Clothes of _________ colours absorb heat better than clothes of light colours.
Ans: black
e. The hotness of an object is determined by its _________.
Ans: Temperature.
f. Temperature of boiling water cannot be measured by a __________ thermometer.
Ans: clinical
4. Match the following:
i. Land breeze blows during a. summer
ii. Sea breeze blows during b. winter
iii. Dark coloured clothes are
preferred during c. day
iv. Light coloured clothes are
preferred during d. night
Ans:
5. Discuss why wearing more layers of clothing during winter
Ans: When more than one layer of clothing is worn, air gets trapped between them. Heat does not transmit well through air. As a result, the insulation improves and we are more comfortable.
6. Look at Fig. 4.2. Mark where the heat is being transferred by conduction, by convection and by radiation.
Ans:
7. In places of hot climate, it is advised that the outer walls of houses be painted white. Explain.
Ans: White-surfaced objects radiate more heat and absorb less. As a result, less outside heat would enter the house.
8. One liter of water at 3000C is mixed with one liter of water at 5000C. The temperature of the mixture will be
a. 8000C
b. More than 5000C
c. 2000C
d. Between 3000C and 5000C
Ans: d. The temperature lies between 3000C to 5000C. As it is a mixture of waters boiled at two different temperatures.
9. An iron ball at 4000C is dropped in a mug containing water at 4000C the heat will
a. Flow from iron ball to water.
b. Not flow from iron ball to water or from water to iron ball.
c. Flow from water to iron ball.
d. Increase the temperature of both.
Ans: b. Not flow from iron ball to water or from water to iron ball. It is due to the fact that both the substances, the water and the iron have the same temperature.
10. A wooden spoon is dipped in a cup of ice cream. Its other end
a. becomes cold by the process of conduction.
b. becomes cold by the process of convection.
c. becomes cold by the process of radiation.
d. does not become cold.
Ans: d. does not become cold. Heat conducts poorly through a wooden spoon. Its opposite end does not grow cold even if it is dipped in a cup of ice cream.
11. Stainless steel pans are usually provided with copper bottoms. The reason for this could be that
a. Copper bottom makes the pan more durable.
b. Such pans appear colourful.
c. Copper is better conductor of heat than the stainless steel.
d. copper is a better conductor of heat than the stainless steel.
Ans: c. Copper is a better conductor of heat than stainless steel. Copper bottoms are commonly included with stainless steel cookware. Copper is a superior heat conductor than stainless steel, which could be the reason.
Topics Covered in Class 7th Science Chapter 3 Heat
Benefits of NCERT Solutions for Class 7 Science Chapter 3 - Heat
Vedantu is considered a reliable platform for various study tools for different classes under the CBSE board.
NCERT Class 7 science chapter 3 heat Solutions are tailored by experienced and skilled teachers who are committed to helping students.
The teaching approach helps students to learn the class 7 questions and answers faster and better.
NCERT Class 7 Science chapter 3 explains the topic well, such as how heat is a type of energy that causes a substance to become hot. In the winter, it is typical to feel cold inside the house and warm outside when exposed to the sun's rays.
Class 7th science chapter 3 embarks on a fascinating journey to understand the fundamental concepts of heat and its various aspects.
The study materials covered all NCERT class 7 science chapter 3 heat topics.
The solutions provided for Science Chapter 3 class 7 question answers are prepared by an expert faculty team to help improve, especially when fine-tuning becomes crucial before exams.
The heat chapter class 7 PDF questions and answers will provide an upper hand to compete on merit level.
Study Materials For Class 7 Science Chapter 3 - Heat
Conclusion
The NCERT Solutions for Class 7 Science chapter 3 offers a comprehensive and detailed understanding of the fundamental principles of heat and its various applications. Through class 7 science chapter 3 question answers, students have gained insights into concepts such as temperature, thermal expansion, modes of heat transfer, and the importance of heat in everyday life. By engaging with these solutions, students have strengthened their theoretical knowledge and developed practical problem-solving skills.
NCERT Solutions Class 7 Science Other Chapter-wise Links
Related Important Links for Class 7 Science
FAQs on NCERT Solutions for Class 7 Science Chapter 3 Heat
1. What is the name of class 7th science chapter 3?
The name of Chapter 3 of Class 7th Science is ‘Heat’. This chapter will stress and discuss in detail how the transfer of energy occurs and its significance. The solutions for this particular chapter can easily be found on the Vedantu site along with additional help required by the student for achieving good marks in their exams. The solutions provided by Vedantu are free of cost and also available on the Vedantu Mobile app.
2. What is heat according to class 7 science chapter 3?
Heat in simple terms is nothing but the transfer of energy. It helps in maintaining thermal equilibrium, i.e. having the same temperature when multiple bodies with different individual temperatures are in contact. Hence for all of them to have the same temperature, energy transfer occurs from the bodies that have the higher temperature to the ones whose temperature is lower. Heat transfer and its processes are crucial; hence, learning the concepts and practicing the related problems judiciously is important.
3. What is a thermometer according to heat class 7 questions and answers?
A thermometer is a temperature-measuring instrument. It can determine the temperature of various substances, including food, liquids, and gases. Celsius, Fahrenheit, and Kelvin are the world's three most widely used temperature measuring units. The most accurate technique to check one's body temperature is with a digital thermometer. In addition to the traditional oral, rectal, and forehead, plenty of other options exist.
4. According to class 7 science chapter 3 heat what do you mean by conductors?
The transmission of internal energy via tiny particle collisions and electron movement within a body is known as thermal conduction and the materials that exhibit this propagation are called conductors of heat. Good heat conductors are materials that allow heat to readily flow through them. Metals that exhibit the highest thermal conductivity include copper and aluminium, whereas steel and bronze exhibit the lowest values.
5. What do you mean by insulators from science chapter 3 class 7 question answers?
An insulator is a substance that prevents energy from easily passing through it, such as electricity, heat, or cold. Insulators such as wood, plastic, rubber, and glass are effective. The conductor is the polar opposite of an insulator: a substance that easily conducts heat or electricity. Insulators shield humans from the potentially lethal consequences of electricity passing via conductors. An electrical circuit's voltage can be extremely high and harmful at times.
6. Where can I find the heat chapter class 7 PDF questions and answers?
You can access a FREE PDF from Vedantu's official website and refer to the study materials provided.
7. Can heat be created or destroyed? How is this explained in class 7 science chapter 3's question answers?
According to the Law of Conservation of Energy, heat cannot be created or destroyed, only transferred from one object to another or transformed into other forms of energy like light or work.
8. Are NCERT Solutions for class 7 science chapter 3 enough for preparing for exams?
NCERT Solutions is a valuable resource for understanding the concepts and practising questions. However, they might not cover all the variations appearing in exams. Using them along with your textbook, class notes, and other practice materials is recommended.