Experiments with Water for Class 5 Worksheet: Water is one of the most important natural resources, and we use it every day for drinking, cooking, cleaning, and many other activities. In NCERT Class 5 EVS Chapter 7 – Experiments with Water, students learn about the different properties of water through fun and easy experiments. These activities help children understand why some objects float while others sink, which substances dissolve in water, and how careful observation helps us learn new things.
This Experiments with Water for Class 5 worksheet with answers is designed to make learning simple and enjoyable. It includes practice questions, MCQs, fill-in-the-blanks, true or false questions, and detailed answers for better revision. You will also find Class 5 Experiments with Water worksheets, Class 5 EVS worksheet Chapter 7 with answers, and experiments with water class 5 extra questions and answers to help you prepare for school tests and build a strong understanding of the chapter.
CBSE Class 5th EVS Experiments with Water Question Answer PDF
Many students search for the CBSE Class 5th EVS Experiments with Water question answer PDF before exams. A good revision PDF should include:
CBSE Class 5 EVS Chapter 7 Experiments with Water Worksheets PDF Download
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Experiments with Water for Class 5 Worksheet with Answers – NCERT Questions
This section covers all the main questions from the NCERT Solutions, written in a way that is easy to understand and remember.
Q1. Ayesha put a puffed puri in a bowl of water. Would it sink or float?
Answer: The puffed puri would float. It is light and full of air, so it displaces enough water to stay on top.
Q2. You put a steel plate on water. Would it sink or float? What would happen to a spoon?
Answer: A spoon would sink because it is small and heavy relative to the water it displaces. A steel plate placed carefully and flat on the water surface can float for a moment because of its wide shape, but it will sink if pushed or tilted. Metals are generally denser than water.
Q3. Would the cap of a plastic bottle sink or float on water?
Answer: The plastic cap would float. Plastic is lighter than water, and the hollow shape helps it stay on the surface.
Q4. Have you seen that some things float on water while others sink? How does this happen?
Answer: Objects that are denser than water sink because they displace less water than their own weight. Objects that are less dense float because the water they push away weighs more than they do. Shape also matters. An iron katori (bowl) floats because its wide, hollow shape pushes away a large amount of water.
What Floats, What Sinks – Experiment Observations
This part of the class 5 EVS chapter 7 worksheet with answers is based on the group experiment where students place different objects in a pot of water.
Q. After doing the experiment, fill in the blanks:
The iron nail sinks in water, but the katori floats. This happened because the iron nail displaces very little water relative to its weight, while the katori's wide shape displaces much more water, allowing it to float.
The empty plastic bottle floats on water. The bottle filled with water sinks because the extra weight of the water inside makes the bottle heavier than the water it displaces.
The aluminium foil floats when it is spread out flat. When it is crushed into a ball, it sinks because the crushed shape displaces less water.
Things that float: Plastic ball, Styrofoam ball, empty bottle, dry leaf, wooden piece
Things that sink: Iron nail, key, metal coin, stone, filled bottle
Dissolving in Water Worksheet with Answers
This section is one of the most important in the experiments with water class 5 NCERT chapter because CBSE exams regularly include questions on solubility.
Q1. Could you see the salt after it dissolved in water?
Answer: No. Salt completely dissolves in water and becomes invisible. However, this does not mean the salt is gone. If you taste the water, it will be salty. If you heat the water until it evaporates, the salt will be left behind.
Q2. Does that mean the water does not have salt now?
Answer: No. The salt is still present, dissolved in the water. The water and salt have mixed completely at a level too small for the eye to see.
Q3. What difference did you see between salt water and chalk water after some time?
Answer: Salt mixed completely with water and stayed mixed. Chalk powder did not dissolve. It settled at the bottom of the glass after some time, leaving the upper water looking clearer.
Q4. How would you separate chalk powder from water?
Answer: Chalk powder can be separated by straining the water through a cloth or filter paper. Salt cannot be separated this way because it has dissolved completely into the water.
Q5. Does oil dissolve in water?
Answer: No. Oil does not dissolve in water. It floats on top and forms a separate layer. This happens because water molecules attract each other strongly and push the oil aside.
Where Did the Water Go – Evaporation Questions and Answers
Q1. Ayesha's mother left water boiling on the stove and forgot about it. Where did the water go?
Answer: The water evaporated. Heat turned the liquid water into water vapour, which mixed into the air and became invisible.
Q2. Why did Chittibabu and Chinnababu keep their mango jelly in the sun?
Answer: They kept the mango jelly in the sun so that the water present in the jelly would evaporate. This makes the jelly thicker and helps it last longer without spoiling.
Q3. What things are made at home by drying in the sun?
Answer: Many things are dried in the sun at home, including papad, pickles, sabudana papad, mango jelly, and potato chips. The sun's heat evaporates the water from these foods and helps preserve them.
Q4. You have washed your handkerchief and want to dry it quickly. What will you do?
Answer: First, squeeze out as much water as possible. Then spread the handkerchief on a clothesline in the sun. You can also iron it on low heat to dry it even faster. A breeze will also help water evaporate from the surface more quickly.
Ayesha's Drops on the Tiffin Box Lid
Q. Ayesha put drops of oil, water, and sugar solution on a tilted tiffin box lid. Which drop went ahead? Why?
Answer: The water drop moved fastest. Water is thinner than oil or sugar solution. Oil is thick and sticks to the surface more, so it moves slowly. Sugar solution is denser and stickier than plain water, so it also moves slowly. This experiment shows that liquids have different thicknesses, which scientists call viscosity.
Experiments with Water Class 5 Extra Questions and Answers
These questions go beyond the NCERT textbook and are commonly asked in CBSE school exams. Practicing these will help with the experiments with water class 5 extra questions and answers section.
Q1. Why can a person float in the Dead Sea without knowing how to swim?
Answer: The Dead Sea has an extremely high amount of salt dissolved in it. This makes the water much denser than regular water. When water is denser, it pushes things up with more force, making it easier to float. The body floats naturally without any effort.
Q2. How can you dissolve sugar faster in water?
Answer: Sugar dissolves faster in two ways. First, stirring the mixture continuously helps by moving fresh water around the sugar crystals. Second, warming the water on a low flame also speeds up dissolving because heat gives water molecules more energy to break apart the sugar.
Q3. Name three soluble and three insoluble substances from everyday life.
| Soluble in Water | Insoluble in Water |
|---|---|
| Salt | Chalk powder |
| Sugar | Sand |
| Lemon juice | Oil |
Q4. What happens to salt when we boil salt water?
Answer: When salt water is boiled, the water evaporates into the air as vapour. The salt cannot evaporate and is left behind as white crystals. This is exactly how sea salt is made in salt farms across India's coastline.
Q5. Why does the same lemon sink in regular water but float in salt water?
Answer: In plain water, the lemon is denser than the water and sinks. When salt is added, the density of the water increases. Eventually, the water becomes denser than the lemon and pushes it up, making it float.
Class 5 Experiments with Water Worksheets – Quick Practice Set
Below is a short CBSE worksheet on the key topics of CBSE Class 5 EVS Chapter 7, with answers included.
Fill in the Blanks
Salt is made from sea water by the process of ______.
Ans: Evaporation
The ______ Sea is the saltiest sea in the world.
Ans: Dead
Oil ______ on water and does not dissolve.
Ans: Floats
Chalk powder is ______ in water.
Ans: Insoluble
A crushed aluminium foil ______ in water.
Ans: Sinks
Multiple Choice Questions
Question: Which of the following does NOT dissolve in water?
(a) Sugar
(b) Salt
(c) Chalk powder
(d) Lemon juice
Answer: (c) Chalk powder
Question: Evaporation means water changes into:
(a) Ice
(b) Snow
(c) Water vapour
(d) Rain
Answer: (c) Water vapour
Question: An empty plastic bottle floats because:
(a) It is made of plastic
(b) It is light and hollow
(c) It has no water inside
(d) Both b and c
Answer: (d) Both b and c
True or False
- Sugar dissolves completely in water. — True
- Oil mixes well with water. — False
- Evaporation happens faster in hot weather. — True
- A katori sinks because it is made of metal. — False
Exam Tips for Class 5 EVS Chapter 7
CBSE Class 5 EVS exams regularly include four to five questions from this chapter. Here is what to focus on.
- Learn the difference between soluble and insoluble substances clearly. This comes up in fill-in-the-blank and short answer questions every year.
- Always explain the reason behind an observation. Do not just write "the nail sinks." Write "the nail sinks because it is denser than water and displaces less water than its own weight."
- For evaporation questions, remember that heat and wind both speed up the process. Surface area also matters — a wide, shallow container loses water faster than a tall, narrow one.
- Practice the observation-based questions from the NCERT textbook because these are frequently converted into exam questions with slight changes.
- For the CBSE class 5th EVS experiments with water question answer PDF, always refer to the official NCERT Looking Around textbook first, then use supplementary worksheets for practice.
Conclusion
Chapter 7 of CBSE Class 5 EVS is one of those rare chapters where every answer can be verified in the kitchen or the backyard. The experiments are simple, the concepts are practical, and the connection to everyday life is direct and clear. Working through a complete experiments with water for class 5 worksheet with answers, as covered in this article, gives students a solid base for both their school exams and their curiosity about how the world works.
The best way to prepare is to read the NCERT textbook first, then practice all the in-text questions, and finally move on to extra questions and fill-in-the-blanks. Doing even one real experiment at home, such as testing which kitchen items float in a bowl of water, makes the written answers easier to recall during an exam.
