Classification of Heat
Heat can be classified as follows:
- Hot
- Cold
Hot
Objects with high heat content are defined as hot (Hotness or coolness of an object is a relative term is always measured with respect to a reference object).
Examples of hot objects around us include the sun, fire, hot pans, air from a hairdryer, lava from volcanic eruptions, etc.
Cold
Objects with lower heat content are defined as cold objects. Hotness or coolness of an object is a relative term that is always measured with respect to a reference object.
Examples of cold objects around us include ice, air from an air conditioner, cold drinks, metal vessels kept in open on cold winter days etc.
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