Heating Homes

Heating Homes

Heat energy is needed to increase the temperature of an object. The amount of energy needed depends on the mass of the object, the type of material it is made from, and the temperature increase.
Heat energy is absorbed when substances melt or boil, but the temperature does not alter during a change of state. The amount of energy needed to melt or boil something depends upon the mass of the object and the material it is made from.
Temperature and heat are two different things. Temperature = measure of how hot something is. Heat = measure of thermal energy contained in an object.
Temperature is measured in degrees. Heat is measured in J.
Infrared radiation = type of radiation emitted by all objects.
Thermal imaging cameras can detect infrared radiation. The images they produce are called thermograms. False colours are added to a thermogram to give an indication of how hot each object in the image is.
1. Hottest parts = white, yellow or red.
  1. Coldest parts = purple, dark blue or black.
Heat energy flows from a hot object to a cooler one. This causes hot objects to cool down and cool objects to warm up. When heat energy is transferred to an object, its temperature increase depends upon the mass of the object, the substance the object is made from and the amount of energy transferred to the object.
For a particular object, the more heat energy transferred to it, the greater it's temperature increases.

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	Created by KMansfield699 over 11 years ago