On a hot day, evaporation occurs faster due to higher temperatures providing more energy for water molecules to escape into the air. On a cold day, evaporation is slower because there is less thermal energy available.
Category: Class 6 Science
NCERT Solutions and Important Questions for class 6 Science for CBSE exams 2020-2021.
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Water evaporation speed is influenced by temperature, humidity, air movement, and surface area. Higher temperatures and lower humidity increase evaporation, while more air movement speeds it up. Larger surface areas also facilitate faster evaporation.
Clothes dry faster on a windy day because the wind increases air circulation, which speeds up evaporation. The moving air helps remove moisture from the surface of the clothes more efficiently than still air.
To speed up drying clothes on a rainy day, use a fan or dehumidifier to increase air circulation and reduce humidity. Alternatively, use a heater to warm the air, which enhances evaporation.
When you rub sanitizer on your hands, it feels cool because the evaporation of alcohol absorbs heat from your skin. This cooling effect occurs as the sanitizer evaporates and dries off.