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Question
the front of a house on a snowy day
on a cold winter morning, clare opened her door to come in from a snowy day.
she was struck by how much colder the metal doorknob felt than the wooden door.
if they were both out in the same temperature, why did one feel colder? she
thought that the wood might absorb heat from the sun better than the metal,
which raised the temperature of the door. to test her idea, she got two wooden
cubes and two metal cubes of the same size. she put one of each type of cube in
the shade, and another of each type in the sun. three hours later, she used an
infrared thermometer to measure the temperature of each sample. to her surprise,
the metal and the wood that were left in the sun were the same temperature! she
decided her idea was wrong—she had predicted that the wooden cube left in the
sun would be warmer than the metal cube in the sun. instead, the materials must
somehow feel different even though they have the same temperature. she asked
er chemistry teacher about it, and he explained that metals have a lower specific
heat. that makes them feel colder than wood at low temperatures and hotter than
wood at high temperatures.
Se identificó una pregunta científica al preguntar por qué el pomo metálico se sentía más frío que la puerta de madera si estaban a la misma temperatura.
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If they were both out in the same temperature, why did one feel colder?