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Do you know how water evaporates from the ocean or a puddle and forms clouds, then falls back as rain, what makes clothes dry easily on sunny days, and why dew forms on grass in the morning? The answer to all these questions lies in the NCERT solutions for Class 6 Science Chapter 8 A Journey through States of Water. Water is one of the most essential resources on Earth; it exists in three different forms- ice, water, and water vapour. NCERT solutions for Class 6 Chapter 8 Science introduce students to the fascinating changes that water undergoes in nature through simple, real-life examples.
The NCERT Solutions for Class 6 Science provide detailed and clear answers to all textbook questions. These solutions will allow you to observe how water behaves in everyday life, including drying clothes, dew on grass, or steam rising from hot food. The key processes like evaporation, condensation, melting, freezing, and the water cycle, etc. are all discussed in this chapter. Practicing these NCERT Solutions for Class 6 Chapter 8 Science is crucial as it will help students to prepare well for exams. Additionally, students can also refer to the A Journey through States of Water Class 6 notes to gain knowledge about all the natural processes happening around them.
Students can download the NCERT solutions for Class 6 Science Chapter 8 exercise questions in PDF format for free. Class 6 Chapter 8 A journey through states of water extra question answers are designed to help you understand the fundamental concepts and solve textbook questions with ease.
A journey through states of water class 6 question answers are given below. You can access the complete NCERT solutions for Class 6 Science Chapter 8 exercise questions, which are given below.
Question 1. Which of the following best describes condensation?
(i) The conversion of water into its vapour state.
(ii) The process of water changing from a liquid into a gaseous state.
(iii) The formation of clouds from tiny water droplets.
(iv) The conversion of water vapour into its liquid state.
Answer:
The process by which water vapour (gas) in the atmosphere cools and transforms back into liquid water is called condensation. This typically occurs when cool surfaces come into contact with warm, humid air. Condensation is the reason you may have noticed water droplets on the outside of a cold glass.
It is also the cause of cloud formation. Clouds are created when water vapour in the atmosphere cools and condenses into small water droplets. However, keep in mind that condensation really refers to the transition from gas to liquid; hence, option (iv) is the best and most accurate response.
Question 2. Identify which of the given processes, evaporation is very important—
(i) Colouring with
(a) crayons (b) watercolors (c) acrylic colours (d) pencil colours
(ii) Writing on paper with
(a) pencil (b) ink pen (c) ballpoint pen
Answer:
i) (a) Crayons – No liquid is involved, so evaporation is not important.
(b) Water colors – Made by mixing pigment with water. The water needs to evaporate for the colour to dry.
(c) Acrylic colors – These are water-based too, and they dry through evaporation.
(d) Pencil colors – These are solid and do not involve any liquid, so evaporation is not important.
Correct options- (b) and (c)
ii) a) Pencil – It's made of graphite (solid), so evaporation is not involved.
(b) Ink pen – Ink is a liquid, and it dries by evaporation.
(c) Ballpoint pen – The ink is thicker but still a liquid, and it also dries by evaporation.
Correct options- (b) and (c)
Question 3. We see green-colored plastic grass in many places these days. The space around natural grass feels cooler than the space around plastic grass. Can you find out why?
Answer:
The simple reason why natural grass feels cooler than synthetic grass is that the former emits water into the atmosphere, whereas the latter does not. Transpiration is the mechanism by which natural grass releases water vapor from its surface. As the water evaporates, the surrounding heat is removed, resulting in a colder atmosphere.
Whereas plastic grass is made of synthetic material and cannot release water. It retains heat from the sun and absorbs it, which makes the surrounding air feel hotter. Therefore, natural grass's cooling impact results from its capacity to release water and dissipate heat.
Question 4. Give examples of liquids other than water that evaporate.
Answer:
Some liquids other than water that can evaporate are perfume, alcohol, nail polish remover, petrol, and kerosene. For example, when we spray perfume, it disappears after some time - that means it has evaporated. These liquids slowly turn into gas and mix with the air just like water does when it dries up.
Question 5. Fans move air around, creating a cooling sensation. It might seem strange to use a fan to dry wet clothes since fans usually make things cooler, not warmer. Normally, when water evaporates, it requires heat, not cold air. What do you think about this?
Answer:
Evaporation indeed needs heat, but a fan helps speed up evaporation in a different way. When clothes are wet, the water on them needs to turn into water vapor. The fan doesn't make the air warmer, yet it moves the air around. This moving air carries away the water vapor from the surface of the clothes.
When the wet surface is surrounded by dry, moving air, more water can evaporate quickly. So, even though the fan doesn't heat the clothes, it helps remove the water faster by blowing away the moisture in the air.
Question 6. Usually, when sludge is removed from drains, it is left in heaps next to the drain for 3–4 days. Afterward, it is transported to a garden or a field where it can be used as manure. This approach reduces the transportation cost of the sludge and enhances the safety of individuals handling it. Reflect upon it and explain how.
Answer:
Sludge is the dirty waste taken out from drains. It is often left near the drain for a few days so that the water in it can dry up. This makes it lighter and easier to carry. When it dries, it also becomes less smelly and safer to touch. Later, it is taken to a field or garden because it can be used as manure, which helps plants grow.
Question 7. Observe the activities in your house for a day. Identify the activities that involve evaporation. How does understanding the process of evaporation help us in our daily activities?
Answer:
Here are some things at home that involve evaporation:
Question 8. How is water present in the solid state in nature?
Answer:
Water in solid form is called ice. In nature, we find it as
Question 9. Reflect on the statement “Water is our responsibility before it is our right.” Share your thoughts.
Answer:
This means we must take care of water and not waste it. Water is important for everyone - people, animals, and plants. So, before thinking it's just our right to use it, we should remember we also have to protect and save water for others and for the future.
Question 10. The seat of a two-wheeler parked on a sunny day has become very hot. How can you cool it down?
Answer:
If the seat is hot because of the sun, you can:
Class 6 Chapter 8 A journey through states of water extra question answer are given below Important practice questions related to the Class 6 Science Chapter 8 Question Answers are provided below. Before solving questions refer A journey through states of water class 6 notes.
Question 1: What is Evaporation? Also, name factors that increase Evaporation.
Answer:
It is the process of the change of the state of substance from liquid into gas without reaching its boiling point.
Factors that increase the rate of evaporation are:
Question 2: Explain Condensation.
Answer:
Condensation is the process in which water vapour cools down and changes into a liquid state. An example of condensation is the formation of water droplets on the outer surface of a cold-water bottle.
Question 3: What is the reason ice floats on water?
Answer:
The density of ice is less than that of water; due to this density difference, the ice floats on water.
Question 4: How does water change from liquid to gas?
Answer:
Through Evaporation and Boiling, water changes from liquid to Gas.
Evaporation: The process of evaporation occurs at any temperature below the boiling point and only at the surface of the liquid.
Boiling: Occurs when water is heated to 100 °C.
Question 5: What is the water cycle?
Answer:
The process of water circulation between Earth and the atmosphere is the water cycle. And it is a continuous process.
This process involves 3 states of water:
To solve questions effectively its important to understand the key concepts. Below are steps used to solve questions from NCERT Solutions for Class 6 Science Chapter 8 A Journey through States of Water. We can follow the steps given below to solve the NCERT Solutions for Class 6 Science Chapter 8 A Journey through States of Water, for quick revision students can follow, A journey through states of water class 6 notes
1) Understant the key concepts:
Before solving the questions, it is very important to understand key topics like States of Matter and Properties of Matter. These concepts form the foundation of Chapter 8 to support learning, students can refer to the NCERT Class 6 Science Chapter PDF, which explains these topics clearly.
2) Must pay special attention to processes like:
Some of the important topics from A journey through states of water Class 6 PDF are given below, and to get the detailed explanation of these topics refer A journey through states of water Class 6 notes.
3) Revise solved questions
Revise solved examples and apply the same approach to solve A journey through states of water class 6 question answer you can also refer to NCERT Class 6 Science Chapter 6 question answer pdf.
4) Practice questions
Practice different types of questions from A journey through states of water Class 6 PDF to develop a proper understanding of the concepts provided in the textbook. These A journey through states of water class 6 question answer helps students to score well in exams.
All the topics and subtopics covered in the Class 6 Science Chapter 8 Question Answers are given below. A basic understanding of these topics helps students to solve complex problems easily.
8.1 Investigating Water's Disappearing Act
8.2 Another Mystery
8.3 What are the Different States of Water?
8.4 How can We Change the States of Water?
8.5 How can Water be Evaporated Faster or Slower?
8.6 Cooling Effect
8.7 How Do Clouds Give Us Rain?
Given below are chapter-wise solutions are given below:
The subject-wise solutions hyperlinks are given below -
Class 6 NCERT books and syllabus links are given below:
The NCERT solutions for Class 6 Chapter 8 Science primarily discuss the different states of water like Solid as ice, Liquid as water and Gas as water vapour
Understanding the states of water is crucial because it helps us comprehend various natural phenomena, such as weather changes, the water cycle, and the physical properties of substances around us.
The main processes involved are melting of a solid to a liquid, Freezing of liquid to solid, Evaporation of liquid to gas and Condensation of gas to liquid.
Temperature plays a significant role in the state of water. At lower temperatures, water exists as ice, as the temperature rises, ice melts into liquid water. Further heating causes water to evaporate into water vapor
Water vapor is an essential component of the Earth's atmosphere. It plays a crucial role in weather patterns, helps regulate temperature, and contributes to the formation of clouds and precipitation.
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