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Another Mystery - Evaporation and Condensation Video Lecture | Crash Course for Class 6
FAQs on Another Mystery - Evaporation and Condensation Video Lecture - Crash Course for Class 6
| 1. What is evaporation and how does it occur? |  |
Ans. Evaporation is the process by which liquid water turns into vapor or gas. It occurs when the molecules in the liquid gain enough energy to break free from the surface and enter the air. This can happen when the temperature increases, or when there is a decrease in air pressure.
| 2. What factors affect the rate of evaporation? | |
Ans. The rate of evaporation is influenced by several factors, including temperature (higher temperatures increase evaporation), surface area (larger surface areas allow more molecules to escape), humidity (lower humidity levels promote evaporation), and air movement (wind can carry away vapor and allow more liquid to evaporate).
| 3. What is condensation and how does it happen? | |
Ans. Condensation is the process by which water vapor in the air cools and changes back into liquid water. This occurs when the temperature of the vapor drops, allowing the water molecules to come together and form droplets, often seen as dew on grass or water droplets on a cold glass.
| 4. How do evaporation and condensation relate to the water cycle? | |
Ans. Evaporation and condensation are key processes in the water cycle. Evaporation moves water from the Earth's surface into the atmosphere as vapor, while condensation returns it to the surface as precipitation (rain or snow). Together, they help maintain the balance of water in the environment.
| 5. Why is evaporation important for cooling? | |
Ans. Evaporation is an effective cooling process because it requires heat energy to convert liquid into vapor. When water evaporates from a surface, it absorbs heat from that surface, leading to a decrease in temperature. This is why sweating cools the body; as sweat evaporates, it takes heat away from the skin.
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Oct 23, 2025
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