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When objects get colder they lose heat energy and their temperature decreases. Their Internal energy and kinetic energy of molecules/atoms also decreases. A phase change can occur if a gas is cooled below it's boiling point or a liquid is cooled below it's freezing point. Other properties like density, conductivity are also affected. Objects usually contract on cooling. Electrical resistance of metallic objects( objects made of any metal) decreases on cooling. Rate of chemical reactions shown by object also changes.
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∙ 14y ago
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Does thermal energy moves?
Such energy can be transferred. Usually it will transfer from hotter objects to colder objects.
Why do some objects feel colder than other objects of the same temperature?
The ones that feel colder, have better heat conduction.
Why do metallic objects appear colder than wooden objects on winter night?
As metallic objects are having good heat retention capacity.
Do hotter objects radiate more total energy per unit area than colder objects?
Yes
How does a heat transfer occur?
only from warm objects to colder ones.
Does thermal energy moves?
Such energy can be transferred. Usually it will transfer from hotter objects to colder objects.
What do objects usually do as they become cooler?
Contract
Why do some objects feel colder than other objects of the same temperature?
The ones that feel colder, have better heat conduction.
Why do your feet feel colder when you get into a pool using second law of thermodynamics?
The basic principle here is that heat tends to flow from hotter objects to colder objects - in this case, from your feet to the cold water.
Why do metallic objects appear colder than wooden objects on winter night?
As metallic objects are having good heat retention capacity.
Does heat flow up to down?
No. Heat is not affected by gravity. Heat flows from hotter objects to colder objects.
Do hotter objects radiate more total energy per unit area than colder objects?
Yes
How does a heat transfer occur?
only from warm objects to colder ones.
What objects that can last very long?
Objects which are high quality last longer than ordinary objects. High quality objects usually have more cost. Objects with less quality may become unusable in a small period.
Can thermal energy flow from cooler objects to warmer objects?
energy alwayy flow from high density to low density
What best explains the movement of heat from tropical to polar areas?
The fact that heat tends to move from hotter objects to colder objects.
When a liquid is cooled its particles become a?
colder
