Monday, June 3, 2019

Properties of Heat and Temperature

Properties of Heat and TemperatureHeat is the transfer of energy from one body to another due to the difference in temperature betwixt the two. A hotter quarry placed next to a cooler object will always transfer high temperature from itself into the cooler object, until both objects be of equal temperature. For example, when we place nut cubes in hot body of water, the set off from the hot water transfers to the ice cubes. This transfer of take fire energy will continue until equilibrium is reached between the hot water and the ice.Heat is a mensuration of the internal energy that has been absorbed or transferred from one body to another. It is not conserved it can be either created or destroyed. There are two general ways that heating can occur from a temperature difference, with energy moving from the region of higher temperature, and from an object gaining energy by way of an energy-form conversion.The SI unit of heat is thejoule. The metric unit of heat is called the k ilogram calorie (cal), which is defined as the amount of heat required to invoke the temperature of one grand of water from 14.5oC to 15.5oC. The English systems measure of heating is called the British thermal unit (Btu), which is the amount of heat needed to increase the temperature of 1 worst of water 1 academic degree Fahrenheit.Some examples of heat energy are chemical energy from the foods is converted into heating our bodies light from the sun is converted to heat as the suns rays fiery the earths surface energy from friction creates heat, like when we rub our hands in light bulbs, electrical energy is converted into heat energy, etceteraWhat is temperature?Temperature is a degree of hotness or coldness of a body. For example, a hot oven is said to seduce a high temperature, and the ice is said to have low temperature. Temperature is the measure of the average kinetic energy of the particles, atoms or molecules, making up a warmheartedness. Temperature can be deliber ate using a thermometer. It is measured in degrees on the Fahrenheit, Celsius, and Kelvin scales.What is the relationship between heat and temperature?Heat and temperature is not the same thing, but there is a relationship between them. When heat is introduced to a certain substance, its molecules start moving faster and collide with one another, which produce more heat and the temperature of the substance goes up. This implies that heat introduced to a substance, changes the temperature of the body. This relationship between heat and temperature can be explained by a property called specific heat,c, which is defined as the amount of heat needed to increase the temperature of 1 gram of a substance 1 degree Celsius.WhereQis the amount of heat needed,mis the mass of the material,cis the specific heat of the material, and Tis the change in temperature.From the in a higher place equation, the amount of heat needed is proportional to the temperature change, which means more heat will be needed to raise the temperature of the cool water and less heat will be needed to raise the temperature of the warm tea.How are they diverse?Heat and temperature are most definitely linked one another, but they are not same.Heat is the measure based on total internal energy, internal kinetic energy and internal potential energy, of the molecules of an object, whereas temperature is a measure of the degree of hotness and coldness of an object, a measure that is based on the average molecular kinetic energy. Heat is measured in joules (J) or calories (cal.) and temperature is measured in degrees on the Fahrenheit, Celsius, and Kelvin scales. Heat is an extensive property, while temperature is an intensive property. Heat depends on mass or metre of the substance, whereas temperature does not depend on the quantity of matter. For example, if the diging temperature of water is 100C, it will remain the same whether we boil one liter or 50 liters of water. But the amount of heat genera ted when we boil 1 liter of water is less as compared to heat generated when 50 liters of water is boiled to 100C.What are the various properties of a substance that locate its heat qualification?The heat capacity is the quantity of heat needed to raise the temperature of a substance by one degree Celsius. It is a measure of how much heat the object must gain or lose to change its temperature by a given amount. The SI unit for heat capacity is J/K (joule per Kelvin). In the English system, its units are British thermal units per pound per degree Fahrenheit (Btu/oF).The heat capacity differs from substance to substance. The amount of substance is directly proportional to the heat capacity. This means the amount of a substance (mass) determines its heat capacity the more quantity of a substance or the greater the mass, more heat it would gain or lose to change its temperature by 1C. For example, it would take more heat to warm the pitcher of water by 1C than to warm a cup of water b y 1C.The heat capacity also depends on the nature or type of material of which the object is composed different materials require different amounts of heat gain or heat loss to change their temperature by 1C, even if they have the same masses. For example, it takes 1 calorie of sunlight to warm 1g of water 1C, whereas, it only takes 0.2 calories to change the temperature of 1g of soil by 1CHeat capacity might depend on the temperature of the object or the atmospheric pressure. For a gas, heat capacity would depend on whether pressure was being held constant during the heat gain or loss, or whether the volume was held constant, or neither.

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.