The degree of hotness and coldness of air is known as temperature and is measured with a thermometer in degrees-Fahrenheit or degrees-Celsius. Mercury is the only one in the liquid state at room temperature. It is used in thermometers because it has a high coefficient of expansion. The flow of heat will be always from higher to lower temperature.
- The higher the temperature, the faster the molecules of the substance move
- The temperature usually decreases with increasing height.
- The main factor that influences the temperature is the position of a place with respect to the sea.
- The rate of decrease of temperature with height is called the normal lapse rate.