NCERT Class 6 Science Chapter 8: A Journey through States of Water Solutions by PW

Water does not always remain in the same form. You see it as liquid water, solid ice and snow, and water vapour in the air. Changes between these states are also part of many everyday situations, from drying clothes to the formation of water droplets.

PW Class 6 Science Chapter 8 Solutions help you work through questions from A Journey through States of Water. You can use the solutions to understand evaporation, condensation, different states of water, the cooling effect of evaporation, and how these processes appear in everyday life.

Class 6 Science Chapter 8 Solutions

The PW Class 6 Science Chapter 8 Solutions include MCQs, reasoning questions, and everyday applications. Try connecting each answer with the process involved—particularly evaporation or condensation—so that you understand why the change takes place.

Question 1: Which of the following best describes condensation?

(a) The conversion of water into its vapour state
(b) The process of water changing from a liquid into gaseous state
(c) The formation of clouds from tiny water droplets
(d) The conversion of water vapour into its liquid state

Answer: (d) The conversion of water vapour into its liquid state.

This process is called condensation.

Question 2: In which colouring process is evaporation very important?

(a) Crayons
(b) Water colours
(c) Acrylic colours
(d) Pencil colour

Answer: (b) Water colours

Question 3: In which writing process is evaporation very important?

(a) Pencil
(b) Ink pen
(c) Ballpoint pen
(d) None of these

Answer: (b) Ink pen

Question 4: Why does the space around natural grass feel cooler than the space around plastic grass?

Answer: Natural grass loses water from the aerial parts of its leaves through transpiration and evaporation. Evaporation produces a cooling effect because heat is absorbed during the process. Plastic grass does not undergo this process, so its surroundings do not experience the same cooling effect.

Question 5: Give examples of liquids other than water that evaporate.

Answer: Examples given in the PW source include milk, oil, whisky, eye drops, and sanitiser.

Question 6: How does a fan help wet clothes dry even though it produces a cooling sensation?

Answer: A fan moves air continuously over wet clothes. This moving air carries away the water vapour formed near the clothes and creates a drier environment around them. As a result, the rate of evaporation increases and the clothes dry faster.

Question 7: Why is sludge removed from drains left in heaps for three to four days before transportation?

Answer: When sludge is left outside, the water or moisture present in it gradually evaporates. This makes the sludge drier and easier to handle and transport.

Question 8: Identify activities in your home that involve evaporation. How does understanding evaporation help in daily life?

Answer: You can observe evaporation while drying clothes, drying a wet floor, cooling water, or allowing wet utensils to dry. Understanding evaporation helps you recognise how moving air, exposure to the surroundings, and heat can help water change into vapour.

The source directs you to connect this activity with examples of evaporation discussed in the chapter.

Question 9: How is water present in the solid state in nature?

Answer: Water occurs naturally in its solid state as ice and snow on mountain peaks and in polar regions such as Antarctica.

Question 10: Explain the statement, “Water is our responsibility before it is our right.”

Answer: Only a small portion of the water available on Earth is suitable for use by plants, animals, and humans. Much of Earth’s water is present in oceans and cannot be used directly.

As the population increases, the availability of safe water can decrease. Therefore, while access to water is important, you also have a responsibility to conserve it and protect water sources from pollution.

Question 11: The seat of a two-wheeler parked on a sunny day has become very hot. How can you cool it down?

Answer: First, move the two-wheeler into the shade. You can then place a wet cloth or handkerchief on the seat. As the water evaporates, it produces a cooling effect.

Another option given in the source is to pour cold water on the seat and allow it to evaporate or wipe it off.

Question 12: What happens to water during evaporation?

Answer: During evaporation, liquid water changes into water vapour. The process involves absorption of heat from the surroundings.

Class 6 Science Chapter 8 Solutions PDF

The PW Class 6 Science Chapter 8 Solutions PDF brings together questions and answers based on the different states of water, evaporation, condensation, and their everyday applications. You can use it to revise both direct concepts and reasoning-based questions.

Move Ahead with Class 6 Science Practice with Complete PW Resources

After completing the Chapter 8 solutions, you can use other PW Class 6 Science resources to revise concepts and practise questions from across the syllabus.

• Class 6 Science Syllabus – Check the complete syllabus and keep track of the chapters and topics you need to revise.

• PW Class 6 Science Notes – Revisit important concepts and definitions before attempting more questions.

• PW Class 6 Science Solutions – Continue solving textbook questions from the remaining Science chapters.

• Class 6 Science Important Questions – Practise additional questions to check whether you can recall and apply important Science concepts.

• Class 6 Science Sample Papers – Work on questions from multiple chapters together and practise answering them in a paper format.

The PW Class 6 Science Chapter 8 Solutions can help you connect changes in the states of water with situations you see around you. While revising, pay particular attention to evaporation and condensation, and make sure you can explain why evaporation causes cooling and how moving air affects its rate. The source summary on page 24 also highlights the states of water, evaporation, and condensation as the central areas to revise.

Also Check: PW Class 6 Science Solutions