Definitions (Heat)

HEAT

Heat: Heat is a form of energy that flows from a hot body to a cold body when they are placed in thermal contact.

Heat energy: Heat energy of a body is defined as the sum of the kinetic energy of all the particles present in the body.

Temperature: The degree of hotness or coldness of body is called temperature.

Thermometer: The device used to measure the temperature of the body is called thermometer.

Liquid thermometer: The thermometer, in which liquid is used as thermometric substance is called liquid thermometer.

One kilo heat: It is defined as the heat which is required to raise the temperature of 1kg pure water by 1  .

One calorie of heat: it is define as the amount of heat required to raise the temperature of 1gm of pre water by 1  .

Linear expansion: The increase in the length of an object due to heat is called linear expansion.

Anomalous expansion of water: The unusual expansion of water in the temperature range between 0  and 4  is called anomalous expansion of water.

Heat equation: heat lost or gain by an object is equal to the product of mass, specific heat capacity, and change in temperature. This is called heat equation.

Caloriemetry: it is defined as the measurement of heat lost or gain by an object.

Thermal heat capacity: Heat capacity of a substance is defined as the amount of heat energy required to increase the temperature of substance by 1 is called heat capacity.

Specific heat capacity: It is defined as the amount of heat required to raise the temperature of 1 Kg mass of substance by 1 degree Celsius.

One joule: It is defined as the amount of heat energy required to raise the temperature by 1  of an object having mass 1 Kg and specific heat capacity 1 J/Kg.

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