Class 5 Exam > Class 5 Notes > EVS Class 5 > Worksheet: Experiments with Water - 2
Experiments with Water - 2 Class 5 Worksheet EVS Chapter 7
Q1: Multiple Choice Questions
(i) Gandhi ji marched from ____________to______ to protest against salt law.
(a) Goa to Mumbai
(b) Ahmedabad to Dandi
(c) Gandhinagar to Dandi
(d) Gandhinagar to Ahmedabad
(ii) Salt and sugar easily dissolve in water because they are ________in nature.
(a) insoluble
(b) soluble
(c) sparingly soluble
(d) immiscible
(iii) A boat floats on water but a needle sinks down, it is due to_________.
(a) density of water
(b) evaporation of water
(c) weight of an object
(d) volume
Q2: Fill in the blanks with suitable words:
(i) For making salt, water is allowed to dry in _______.
(ii) Dead Sea is the ________ of all.
(iii) Common salt is ______ in water while chalk powder does not dissolve in water.
(iv) Iron nail ______ in water but the katori floats.
Q3: Match the column
Q4: Answer the following questions
(i) A lemon sinks in a glass of plain water but floats on adding salt in the water. Why?
(ii) Why does a person float in Dead sea, even after he does not know how to swim?
(iii) Suggest some ways to quickly dissolve sugar in water for making shakkarpara.
(iv) Do you think that the oil gets dissolved in water? Why do you think so?
(v) Why did Chittibabu and Chinnababu keep their mango jelly in the sun?
(vi) Name some things that are made by drying in the sun at your house.
(vii) How is the salt made?
(viii) You have washed your handkerchief and you want to dry it quickly. What all can you do?
(ix) What things do you put in water to make tea? Which of those things dissolved in water?
(x) You have been given some mishri pieces (lumps of sugar). Suggest some ways to dissolve them quickly?
The solutions of the worksheet "Experiments with Water - 2"
The document Experiments with Water - 2 Class 5 Worksheet EVS Chapter 7 is a part of the Class 5 Course EVS Class 5.
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FAQs on Experiments with Water - 2 Class 5 Worksheet EVS Chapter 7
| 1. What are some simple experiments I can do with water at home? |  |
Ans. You can try a variety of simple experiments with water at home, such as:
1. The Water Cycle in a Bag: Fill a clear plastic bag with water and tape it to a sunny window. Watch as condensation forms and mimics the water cycle.
2. Floating and Sinking: Use various objects (like a coin, a leaf, and a plastic bottle) to see which float and which sink in a bowl of water.
3. Color Mixing: Add food coloring to water in different cups to explore how colors mix when combined.
4. Water Density Experiment: Layer different liquids like oil, water, and syrup in a clear container to observe density differences.
| 2. How does temperature affect the properties of water? | |
Ans. Temperature has a significant impact on the properties of water. As water is heated, it expands and becomes less dense, which is why warm water can float on cold water. Conversely, when water cools, it contracts and becomes denser. Additionally, at 0°C, water freezes, forming ice, which is less dense than liquid water and allows ice to float. These properties are crucial in various natural processes, including weather patterns and aquatic life.
| 3. What is the importance of water in our daily lives? | |
Ans. Water is essential for life and plays a vital role in our daily activities. It is used for drinking, cooking, cleaning, and sanitation. Water is also crucial for agriculture, as it supports the growth of crops. Furthermore, it helps regulate body temperature, aids digestion, and is involved in numerous biological processes. Without water, life as we know it would not exist.
| 4. How can I demonstrate the concept of surface tension in water? | |
Ans. You can demonstrate surface tension by performing a simple experiment using a few items. Fill a shallow dish with water and gently place a paperclip on the surface of the water. You will notice that the paperclip floats despite being made of metal. This happens because the surface tension of the water creates a "skin" that holds the paperclip up. You can also add a few drops of dish soap to the water and observe how the soap breaks the surface tension, causing the paperclip to sink.
| 5. What are some common misconceptions about water? | |
Ans. Some common misconceptions about water include:
1. "All water is the same." In reality, there are various types of water, such as fresh, salt, and wastewater, each with different properties and uses.
2. "Water is always clear." While pure water is clear, it can appear colored or cloudy due to impurities or dissolved substances.
3. "Boiling water is the only way to purify it." While boiling is effective, other methods like filtration, distillation, and chemical treatments can also purify water.
Understanding these misconceptions is important for making informed decisions about water use and conservation.
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Nov 22, 2024 Last updated |
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