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Question about Everyday Materials Transformations

Subject Sciences

Sciences

Source Originais Teachy

Originais Teachy

Topic Everyday Materials Transformations

Everyday Materials Transformations

Difficulty Easy

Easy

(Originais Teachy 2023) - Question Easy of Sciences

During a practical science class, the students observed that an ice cube, when taken out of the freezer and placed on a table, started to shrink and, after some time, ceased to exist. The teacher explained that this happened due to the transfer of heat from the environment to the ice, causing its transformation from solid to liquid, a process known as melting. She decided to create an activity so that the students could better understand melting and other material transformations. Considering the transformations that different materials can undergo when exposed to different conditions, such as heating, cooling, light, and humidity, what is the process by which wet clothes on the clothesline dry in the sun on a hot summer day? Explain the process in detail, mentioning the conditions that favor this transformation and the initial and final state of the material.

A secagem da roupa no varal é um exemplo de solidificação, que acontece quando a água no estado gasoso retorna ao estado líquido ao entrar em contato com a superfície da roupa.

No verão, a roupa molhada seca mais rapidamente devido ao processo de precipitação, que faz com que a água caia da atmosfera diretamente sobre a roupa.

Durante a exposição ao sol, a roupa molhada sofre fusão, transformando-se de um estado líquido para o sólido e, posteriormente, para o gasoso, o que a faz secar.

A roupa seca ao sol devido à condensação das moléculas de água, que passam do estado gasoso para o líquido quando entram em contato com a superfície da roupa.

Wet clothes dry in the sun on a hot summer day due to the process of evaporation, which transforms the liquid state of water present in the clothes' fibers into vapor when these fibers receive enough energy from the sun and warm air. The conditions that favor this transformation are high temperatures, low relative humidity, and good ventilation. The initial state of the clothes is wet, and the final state is dry, with the water dispersed in the atmosphere.

Answer sheet:

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