Water class 6 is an important subject to master and understand if you want to excel on your upcoming exams. Fortunately, this comprehensive guide provides comprehensive notes, MCQs, and extra questions and answers designed to help you learn the material quickly and thoroughly.

Water is one of the most essential elements of life. It is made up of two hydrogen atoms and one oxygen atom that form H2O. Water covers approximately 71% of the earth’s surface and plays a vital role in sustaining all forms of life, from plants to animals to humans. Water is also used for many things in our daily lives such as bathing, cooking, cleaning, and more.

Water is a vital natural resource that is necessary for life on Earth, and it is the topic of study in Class 6 Science, Chapter 14. This chapter covers a broad range of topics related to water, such as its properties, the water cycle, and its importance in daily life. In these notes, students can learn about the characteristics of water, such as its transparency, tastelessness, and odourless nature. They can also learn about the three states of water: solid, liquid, and gas.

The water cycle is an essential concept in this chapter, and students can find comprehensive notes on it. The water cycle describes how water evaporates from the surface of the Earth, rises to the atmosphere, and then condenses to form clouds, which eventually precipitate as rain or snow back to the surface. Students can learn about the various stages of the water cycle and their significance in maintaining the water balance on Earth.

This chapter also contains a diagram of the water cycle to help students visualise the different stages and their sequence.

The notes on water for Class 6 Science Chapter 14 also include a section on the importance of water in daily life. Students can learn about the various uses of water, such as drinking, washing, cleaning, and irrigation, and how essential it is for maintaining human health and hygiene.

Additionally, students can learn about the significance of water for other living organisms and the importance of conserving water.

The notes also cover the concept of evaporation, a crucial process in the water cycle. The notes explain the meaning of evaporation and how it occurs when water is heated. Additionally, the notes cover the factors that affect the rate of evaporation, such as temperature, humidity, and wind speed.

Overall, these notes provide an excellent resource for students studying water in Class 6 Science Chapter 14. They cover the characteristics of water, the water cycle, the importance of water in daily life, and the process of evaporation. Additionally, these notes provide a diagram of the water cycle, making it easier for students to understand the sequence of events. These notes are ideal for students preparing for exams or seeking to improve their understanding of water and its properties.

Water extra questions and answers for revision

1. What are the three states of water? Answer: The three states of water are solid (ice), liquid (water), and gas (water vapor).

   
   

2. Why is water called a universal solvent? Answer: Water is called a universal solvent because it has the ability to dissolve many substances due to its polarity and ability to form hydrogen bonds.

   
   

3. What are the sources of water? Answer: The sources of water are rivers, lakes, oceans, groundwater, and precipitation (rain, snow, sleet, etc.).

   
   

4. How much of the earth's water is available for human use? Answer: Only about 1% of the earth's water is available for human use, with the majority being saltwater.

   
   

5. What is the importance of water for plants? Answer: Water is essential for plants to carry out photosynthesis, absorb nutrients from the soil, and regulate temperature through transpiration.

   
   

6. How much water should a person drink in a day? Answer: A person should drink at least 8-10 glasses (or 2-3 liters) of water per day to stay hydrated.

   
   

7. What is the role of water in the human body? Answer: Water plays a vital role in the human body by regulating body temperature, carrying nutrients and oxygen to cells, lubricating joints, and removing waste through urine and sweat.

   
   

8. What is the boiling point of water? Answer: The boiling point of water is 100°C or 212°F at standard pressure (sea level).

   
   

9. What is water pollution? Answer: Water pollution is the contamination of water bodies (lakes, rivers, oceans, etc.) with harmful substances such as chemicals, sewage, and plastic waste.

   
   

10. What is the water cycle? Answer: The water cycle is the continuous process of water evaporating from oceans, lakes, and rivers, forming clouds, and falling back to the earth as precipitation, which then flows into water bodies and groundwater.