EduRev

Open App

Class 7 Exam > Class 7 Videos > NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English

NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English Video Lecture

Top Courses for Class 7

View all

FAQs on NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated - English Video Lecture

1. What is the definition of heat?

Ans. Heat is a form of energy that is transferred from one object to another due to a difference in temperature. It is the energy that causes objects to become hotter.

2. How is heat transferred?

Ans. Heat can be transferred through three main processes: conduction, convection, and radiation. - Conduction is the transfer of heat through direct contact between two objects or substances. - Convection is the transfer of heat through the movement of fluids (liquids or gases). - Radiation is the transfer of heat through electromagnetic waves, such as sunlight.

3. What are the effects of heat on objects?

Ans. Heat can have various effects on objects: - It can cause objects to expand or contract. For example, metal expands when heated and contracts when cooled. - It can change the state of matter. For instance, when heat is applied to ice, it melts and turns into water. - It can cause chemical reactions. Some substances may react differently when exposed to heat, leading to new products. - It can transfer energy. Heat can be used to generate electricity, cook food, or warm up a space.

4. How does insulation work to reduce heat transfer?

Ans. Insulation works by minimizing heat transfer between objects of different temperatures. It does this by creating a barrier that reduces the flow of heat. Insulating materials, such as fiberglass, foam, or wool, have a high resistance to heat flow. They trap air pockets, which act as insulators and prevent the transfer of heat. This helps to keep the desired temperature inside a space and reduce the need for excessive heating or cooling.

5. What are some practical applications of heat transfer?

Ans. Heat transfer has various practical applications in our daily lives: - Heating systems: Heat transfer is used in heating systems to warm up buildings and homes during cold weather. This can be achieved through radiators, boilers, or electric heaters. - Cooking: Heat transfer is crucial in cooking. It allows us to boil, bake, fry, or grill food by transferring heat from a heat source (e.g., stove, oven) to the food. - Refrigeration and air conditioning: Heat transfer is used in refrigeration and air conditioning systems to remove heat from a space or object and transfer it outside, resulting in cooling. - Solar energy: Heat transfer is utilized in solar panels to absorb sunlight and convert it into usable heat energy for heating water or generating electricity.

Related Exams

Class 7

About this Video

	4.84/5 Rating
	Nov 30, 2024 Last updated

NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English for Class 72024 is part of Class 7 preparation. The notes and questions for NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English have been prepared according to the Class 7 exam syllabus. Information about NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English covers all important topics for Class 72024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English.

Introduction of NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English in English is available as part of our Class 7 preparation & NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English in Hindi for Class 7 courses. Download more important topics, notes, lectures and mock test series for Class 7 Exam by signing up for free.

Description

Video Lecture & Questions for NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English Video Lecture - Class 7 full syllabus preparation | Free video for Class 7 exam.

Information about NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English

Here you can find the NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English defined & explained in the simplest way possible. Besides explaining types of NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English theory, EduRev gives you an ample number of questions to practice NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English tests, examples and also practice Class 7 tests.

Explore Courses for Class 7 exam

Signup for Free!

Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.

Start learning for Free

10M+ students study on EduRev

NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English Video Lecture

Important questions

Exam

Previous Year Questions with Solutions

study material

practice quizzes

Viva Questions

Extra Questions

pdf

Semester Notes

mock tests for examination

ppt

Free

Sample Paper

Objective type Questions

NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English Video Lecture

MCQs

NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English Video Lecture

past year papers

Summary

video lectures

shortcuts and tricks

;

Study NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English on the App

Students of Class 7 can study NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English alongwith tests & analysis from the EduRev app, which will help them while preparing for their exam. Apart from the NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English, students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc. The EduRev App will make your learning easier as you can access it from anywhere you want. The content of NCERT Class 7 Science Chapter 4: Heat (NSO/NSTSE/Olympiad) - Animated | English is prepared as per the latest Class 7 syllabus.

Education Revolution