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Experiments with Water Class 5 Notes CBSE EVS Chapter 7 (Free PDF Download)

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Last updated date: 24th Apr 2024
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Experiments with Water Revision Notes and Worksheets: Faster Preparation and Quick Revision

Class 5 EVS teaches students many things about the physical and chemical properties of water in Chapter 7. This chapter is unique and crucial for the conceptual development of the students. They get introduced to the basic concepts of physics and chemistry in this chapter. It explains why some things float in liquids and some drown. You will also learn new facts about famous water bodies. To understand the context of this chapter, refer to the Experiments with Water revision notes.


These notes will help you understand the concepts of water and other liquids by giving a simpler explanation of the various topics and subtopics of this chapter. Every section has been explained in an easier tone so that you can get Experiments with Water summary easily. Resolve doubts on your own using these notes and prepare this chapter well.


Class 5 EVS Revision Notes - Chapter-wise List

The class 5 EVS notes will help students prepare better for their examinations. They are prepared by experts and are in accordance with the latest CBSE syllabus and guidelines.

Access Class 5 Environmental Studies Chapter 7: Experiments with Water

Summary of Experiments with Water

  • This chapter helps us to understand the features of water.

  • How an object sinks and floats on water.

  • This chapter helps us to do some experiments with water and understand the properties of water or a liquid in a better way.


What Floats – What Sinks?

  • Ayesha was looking forward to her meal. Her Ammi was making puri and spicy potatoes today, which is one of her favourite dishes.

  • Ayesha stood there watching her mother roll out the puri and drop it into the boiling oil.

  • She noticed that the puri initially sank to the bottom of the pan.

  • The puri rose to the surface and began to float in the oil as it puffed up. One puri did not puff up or float as well as the others.

  • Ayesha took some dough and rolled it into a ball after seeing this. She pressed it flat and placed it in a bowl of water. Alas! It sank to the bottom and remained there for a long time.

  • This shows things sink in a liquid because of its structure not weight.

  • Like a big ship doesn’t sink but a small needle sink because the structure of the ship has a vacuum but the needle’s structure is occupied.


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Is it Magic?

  • Salt helps things with higher density float in the water.

  • While boiling eggs when we add salt to the water, we can see that the eggs start floating.

  • The Dead Sea is a good example.

  • Salty water can be found in all oceans and seas. The Dead Sea is the saltiest of all.

  • Surprisingly, a person who does not know how to swim would not drown in this sea.

  • About 300g of salt is found in 1 liter of water of the dead sea.


What dissolved, what did not?

  • Several things dissolve with water quickly, some take time and some never dissolve. 

  • Let’s have a look

Things

Dissolves Quickly

Dissolves but take a long time

Doesn’t dissolve at all

Sugar

No

Yes

No

Salt

Yes

No

No

Oil

No

No

Yes

Chalk Powder

No 

Yes

Yes(Some particles don’t dissolve)


Racing drops

  • Here we can study which liquid travels faster.

  • A pure water travels faster.

  • Water with impurities or solution will travel slowly.

  • Liquids with higher density will travel slowly.


Evaporation and Dandi March

  • When a liquid substance turns into a gas, it is called evaporation. Water evaporates when it is heated. 

  • Dandi March took place in 1930 before India became independent.

  • For many years, the British had enacted legislation prohibiting people from producing their salt.

  • Salt was also subjected to a high tax. This law made it illegal for people to make salt at home.

  • To protest this law, Gandhiji and a group of others went on a yatra (long walk) from Ahmedabad to the Dandi seashore in Gujarat.


Making of Salt

  • The seawater is collected in shallow sand-filled beds. 

  • The sun is used to dry the water. 

  • The salt remains on the ground after the water has dried.


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Practice Questions

Q1. Why would a person continue to float in the Dead Sea if he has no idea what he is doing?

Ans: The Dead Sea has a lot of salt, which helps you stay afloat.


Q2. On a sunny day, why do clothes dry faster than on a cloudy day?

Ans: In hotter weather, the temperature in the sun is higher than in the shade, and evaporation occurs more quickly. As a result, wet clothes dry quickly in the sun.


Q3. Why did Mahatma Gandhi undertake the Dandi March? 

Ans: The Dandi March is a protest against British injustices and the salt monopoly that was led by Mahatma Gandhi and his volunteers on March 12, 1930, from Sabarmati Ashram. The production of salt was a monopoly practised by the British, who also levied a high tax on it.


Word Meanings

  • Sinks: become submerged in something by descending below its surface, especially in a liquid

  • Float: Without sinking, one can stand or move close to the liquid's surface.

  • Vacuum: a place devoid of all material.

  • Density: the degree to which a substance is compact.

  • Dissolve: become or make a substance a part of a liquid by incorporation in order to create a solution.


Importance of CBSE Class 5 EVS Chapter 7 Experiments with Water

This chapter introduces students to the different features of water. For instance, there are many things that float in water. Some things submerge and float whereas some entirely drown. This is a natural phenomenon that this chapter will explain using experiments and examples.


You will also understand the reason behind the behaviour of an iron nail in water and an empty bowl. This chapter aims at building a conceptual foundation so that you can learn various scientific principles later in the advanced classes.


Find out the results of the experiments and correlate them to the concepts this chapter aims to teach. Get to know how these things happen naturally and what the reasons behind them are. Learning and determining things that float in water will also help you differentiate between things based on this concept.

Benefits of Vedantu’s Experiments with Water Worksheets and Revision Notes

  • The notes have been prepared to simplify this chapter for the students. It will help students to find out the meaning and concepts of certain phenomena of water. They will learn why these things happen and how we can explain them using notes.

  • Refer to the notes when you are studying this chapter. Download the PDF version and use it at your convenience to resolve doubts on your own.

  • When you are done preparing this chapter, solve the worksheets and refer to the solutions. Find out 10 things that do not dissolve in water and things that float. It will help develop your answering skills and conceptual foundation.


Download Experiments with Water for Class 5 EVS Revision Notes

Get the free PDF versions of these notes and worksheets. Make your study material for this chapter complete. Learn the fascinating new concepts using these notes and become better at answering questions. Recall what you have studied using these notes before an exam and score well.


Conclusion 

The "Experiments with Water" chapter in Class 5 CBSE EVS is a valuable educational resource that provides young learners with a captivating hands-on exploration of water's remarkable properties and behaviors. This chapter not only promotes scientific curiosity and inquiry but also underscores the essential role of water in our lives and the environment. By engaging in practical experiments and activities, students gain a deeper understanding of water's ability to change states, dissolve substances, and support life on Earth. Moreover, it fosters an appreciation for scientific exploration and environmental consciousness, setting a foundation for a lifelong love of learning and a responsible attitude towards our planet's precious resources, particularly water.

FAQs on Experiments with Water Class 5 Notes CBSE EVS Chapter 7 (Free PDF Download)

1. Why does a nail drown in water?

A nail does not have ample surface to displace water and reduce its weight. This is why a nail drowns when left in water.

2. Why does a boat float on water?

A boat floats on water because its surface area submerged in water is higher than its weight. It helps the boat to float. For the same reasons, a rolled puri drowns in oil but floats when it puffs up.

3. Why do people float in the Dead Sea?

The Dead Sea is known for its high content of salt. It is so salty that it does not have fish in it. Due to the heaviness of the water, people float.

4. Are these experiments safe to perform at home?

Many students might want to know if they can replicate these experiments in a home setting, and if so, how to do it safely.

5. How do these experiments relate to real-life situations?

Students often want to understand how the knowledge gained from these experiments can be applied in everyday life.

6. What is the water cycle, and how does it connect to the experiments in this chapter?

Explaining the connection between the water cycle and the experiments can provide context and relevance.