Water exists in three states: solid (ice), liquid (water), and gas (water vapor). We encounter ice in freezers, drink liquid water, and see steam rising when water boils, showcasing its versatility in everyday life.
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The best description of condensation is (iv): the conversion of water vapor into its liquid state. This process occurs when water vapor cools and forms droplets, contributing to cloud formation and precipitation.
Acting out the water cycle involves students role-playing stages like evaporation, condensation, precipitation, and collection. This interactive activity helps illustrate how water moves through its cycle, making the concept engaging and memorable.
Leaving sludge in heaps allows excess water to drain out, reducing its weight and volume. This makes transportation cheaper and easier, while letting it partially decompose improves safety and reduces handling risks.
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.