Touch an engine after a ride, and it feels hot. Dip your finger in ice-water, and it feels cold. That's a no-brainer! But what if a polar bear, used to freezing Antarctic temperatures, touched the same things? Both might feel hot to a polar bear because it lives in much colder climatic conditions than we do. Hot and cold are correlative terms that can be used to compare how objects feel when they have more or less of a certain kind of energy, we call heat. What is this heat, where does it come from, and how does it move around our world? Let's explore more!
Heat energy is called Heat. When an object is very hot, it generally possesses a lot of heat energy; similarly, when the object is cold, it has less heat energy. The things which seem colder such as polar bears and icebergs have rather more heat energy than you. Every object consists of atoms, and molecules these molecules collide with each other like people in the crowd, and this is known as kinetic energy of matter.
The heat can be transferred from one place to another in different ways:
Temperature is a measure that determines the coldness or hotness of an object. Temperature is a measure of the average kinetic energy of the molecule or particles in an object, which is a type of energy associated with motion. But how hot is the object, and how cold is the object? The terms hot and cold are non-scientific terms. If we really want to specify how hot or cold an object is, we must use temperature.
For instance, how hot is melted iron? To answer that question, a researcher would measure the temperature of the liquid metal. We will use the term temperature to define the hotness or coldness of an object. A thermometer measures the temperature of an object showing how hot or cold it is. There are different types of thermometers which can measure the temperature of different things. We use thermometers to measure the temperature of our body, the food we consume, the air and many other things. A thermometer can be classified into two types: Analog and Digital Thermometers.
This scale has the freezing point of water (H2O) at OoC, and the boiling point of water (H2O) at 100o C. The temperature is in between are divided up into 100 units (degree).
This scale has absolute zero as the zero points on its scale. The means of the degree is the same as a Celsius degree. The advantages are:
Add 273 to the Celsius degree
Subtract 273 to the Kelvin degree.
|Tc = ( Tf-32)||Converts Fahrenheit to Celsius|
|TF = TC + 32||Converts Celsius to Fahrenheit|
|TK = TC + 273||Converts Celsius to Kelvin|
|TC = TK - 273||Converts Kelvin to Celsius|
|Heat( Q )||Temperature( T )|
|1 Heat is the energy stored inside an object||1 Coldness or hotness of an object is measured by Temperature|
|2 The SI unit of heat is Joules||2 The SI unit of temperature is Kelvin|
|3The amount of heat energy contained in an object depends on its mass, temperature, and material which is the specific heat capacity.||3 The Temperature of a body depends on the average kinetic energy of its molecules or particles.|
|4 The Heat can be measured using the principle of calorimetry or the principle of the method of mixtures.||4 The temperature is measured using the thermometer.|
|5 Two bodies that have a similar amount of heat energy can differ in their temperature||5 Two bodies at a similar temperature can contain different amounts of heat energy.|
|6 When two bodies are in contact, the total amount of heat energy is the sum of the heat energy of each object.||6 If two objects are at completely different temperatures are kept in contact, the resultant temperature will be the temperature between the two temperatures.|
|7 Heat has the ability to do work.||7 Temperature can be used only to measure the degree of heat.|
|8 Heat is the measure of how many molecules are in an object multiplied by how much energy each molecule possesses.||8 Temperature is related to how fast the molecules move within the object.|
|9 The heat flows from hotter bodies to colder bodies.||9 The temperature increases when heated and it decreases when cooled.|