NCERT Solutions Class 6 Science Chapter 6 Food – Where Does It Come From – Here are all the NCERT solutions for Class 6 Science Chapter 6. This solution contains questions, answers, images, explanations of the complete chapter 6 titled Food – Where Does It Come From of Science taught in class 6. If you are a student of class 6 who is using NCERT Textbook to study Science, then you must come across chapter 6 Food – Where Does It Come From. After you have studied lesson, you must be looking for answers of its questions. Here you can get complete NCERT Solutions for Class 6 Science Chapter 6 Food – Where Does It Come From in one place.
NCERT Solutions Class 6 Science Chapter 6 Changes Around Us
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For a better understanding of this chapter, you should also see summary of Chapter 6 Changes Around Us , Science, Class 6.
Class | 6 |
Subject | Science |
Book | Science |
Chapter Number | 6 |
Chapter Name |
Changes Around Us |
NCERT Solutions Class 6 Science chapter 6 Changes Around Us
Class 6, Science chapter 6, Changes Around Us solutions are given below in PDF format. You can view them online or download PDF file for future use.
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Question & Answer
Q.1: To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
Ans : Yes. The length of the dress can again be increased by unfolding it. Hence, this change can be reversed.
Q.2: You accidentally drop your favourite toy and break it. This is a change you did not want. Can this change be reversed?
Ans : No. This change cannot be reversed.
Q.3: A drawing sheet changes when you draw a picture on it. Can you reverse this change?
Ans : If we draw a picture on a drawing sheet with a pencil, we can get back the original drawing sheet by erasing the drawing with an eraser. In this case, the change can be reversed. However, if we draw with a pen, then the original drawing sheet cannot be obtained back because we cannot erase ink. Hence, in this case, the change cannot be reversed.
Q.4: Give examples to explain the differences between changes that can or cannot be reversed.
Ans : To explain the differences between changes that can or cannot be reversed, some examples are given below: (i) If we inflate a balloon, the size and shape of the balloon undergoes a change. However, the original size and shape of the balloon can be obtained back by allowing the air to escape from the balloon. This means that the change that occurs by inflating a balloon can be reversed. But, if the balloon bursts after being inflated, then its original size and shape cannot be obtained back. Thus, in this case, the change cannot be reversed. (ii) If we fold a piece of paper, then the shape and size of the paper undergoes a change. In this case, the original shape and size of the original paper can be obtained back. Thus, this change can be reversed. However, if we cut the piece of paper, the change in the shape and size of the paper cannot be reversed. (iii) After we roll out a chapati from a ball of dough, the chapati can be converted back into a ball. Thus, the change occurring here can be reversed. But, if we cook the chapatti on a tawa, then it cannot be converted back into a ball of dough. Thus, the change is irreversible.
Q.5: A thick coating of Plaster of Paris (POP) paste is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilized. Can the change in POP be reversed?
Ans : When water is added to plaster of Paris (POP), it changes to another substance and on drying it hardens. Once the POP has hardened, its shape cannot be changed. Therefore, the change in POP cannot be reversed.
NCERT / CBSE Book for Class 6 Science
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