Class 6 Science Curiosity A Journey through states of Water
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Q: What are the three states of water mentioned in the chapter?
A: The three states of water are solid (ice), liquid (water), and gas (water vapor).
Q: What is condensation?
A: Condensation is the process of conversion of water vapor into its liquid state.
Q: What happens when water vapor comes in contact with a cold surface?
A: When water vapor comes in contact with a cold surface, it forms water droplets through condensation.
Q: What is the process of conversion of a solid into liquid state called?
A: The process is called melting.
Q: What is the process of conversion of liquid into solid state called?
A: The process is called freezing.
Q: How can you change ice to its liquid state quickly?
A: You can change ice to its liquid state quickly by supplying heat to it.
Q: What conditions affect how fast water evaporates?
A: Conditions that affect evaporation rate include temperature, wind, exposed surface area, and humidity.
Q: Why do clothes dry faster on a windy day?
A: Clothes dry faster on a windy day because the increased air movement helps water evaporate faster.
Q: Why do clothes dry slowly on a rainy day?
A: Clothes dry slowly on a rainy day because the air already has high humidity, slowing down evaporation.
Q: What is the cooling effect associated with evaporation?
A: When water evaporates, it absorbs heat from its surroundings, causing a cooling effect.
Q: How does an earthen pot (matka) keep water cool?
A: Water seeps through the surface of the earthen pot and evaporates, imparting a cooling effect on the water inside.
Q: What is the water cycle?
A: The water cycle is the circulation of water between the Earth’s surface and atmosphere.
Q: How are clouds formed?
A: Clouds are formed when water vapor in the air condenses around dust particles at cooler temperatures high in the atmosphere.
Q: What causes rain to fall?
A: Rain falls when water droplets in clouds become too heavy and fall due to gravity.
Q: Why does water vapor rise in the atmosphere?
A: Water vapor rises because it is lighter than air.
Q: What is humidity?
A: Humidity refers to the amount of water vapor present in the air.
Q: How does increasing the exposed surface area of water affect evaporation?
A: Increasing the exposed surface area of water makes evaporation happen faster.
Q: What is a pot-in-pot cooler?
A: A pot-in-pot cooler is a simple, electricity-free cooling device made with two earthen pots, sand, and water.
Q: Why is it important to use water wisely?
A: It’s important to use water wisely because only a small portion of Earth’s water is fit for use by plants, animals, and humans, and demand is increasing with population growth.
Q: What role do dust particles play in cloud formation?
A: Dust particles provide surfaces for water vapor to condense around, facilitating the formation of water droplets in clouds.
Q: How does evaporation contribute to the water cycle?
A: Evaporation from oceans, lakes, and the Earth’s surface provides the water vapor that forms clouds and eventually returns as precipitation.
Q: What is a surahi?
A: A surahi is a unique clay pot used to keep water cold in summers.
Q: How does condensation bring evaporated water back to Earth’s surface?
A: Condensation forms clouds, which can then produce rain, hail, or snow, returning water to the Earth’s surface.
Q: Why does water feel colder when it’s in an earthen pot compared to a stainless steel pot?
A: Water in an earthen pot feels colder due to the evaporative cooling effect as water seeps through and evaporates from the pot’s surface.
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