Heat and Temperature
Energy is measured on the earth in the form of both heat and temperature. Temperature is the average kinetic energy of the molecules and atoms of a substance. According to (Gavin 104-7)“The concept of temperature is as fundamental a physical concept as the three fundamental quantities of mechanics—mass, length, and time.All atoms in universe are in motion; this motion can be in the form of vibration, such as a solid, or moving over long distances and colliding such as what occurs in gases. The greater the amount of motion in a substance, the higher the temperature. Temperature on earth is measure using three different scales. Kelvin, Fahrenheit and Celsius . Heat is a measure of the flow of kinetic energy from one material to another, or the total amount of kinetic energy in a system. All heat flows from substance with high kinetic energy, or a source, to substance with low kinetic energy, called a sink. Therefore the energy flow in a system moves from a source to a sink. We sense this change in kinetic energy as heat. Heat is measure by using the calorie, which is a unit that denotes the amount of energy it takes to raise the temperature of 1 gram of water 1 degree centigrade. The specific heat of a substance is a measure of how much heat is required to raise 1 gram of the substance to 1 degree centigrade.