: why can our houses still be cold while it’s warm outside ?
In: Physics
Depending on where you live and how houses are constructed there, houses can have several layers of insulation. This basically means your house acts as a blanket, and traps cold air inside.
Eg, the house is made purely of brick and mortar. The bricks stay cool for a long time, and keep the air in the house cool by extension. If the house is made purely of metal, it will heat (and cool) quickly, because metal heats and cools quickly.
Also, if the house does not have much ventilation, such as reduced numbers of doors and windows, or windows which are kept closed, there is not much warm air from outside heating the cooler air inside, which contributes to the stay-cool effect.
Other factors include the external environment (eg, a house built in a shaded place will be cooler than the same house in full sunlight), proximity to water bodies, etc.
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