You wrap up in blankets in the winter, hold your hands out to feel the warmth of a fire, and jump due to accidental touch of hot object. What is this thing which you call as heat?
You all know that heat is form of energy but how is this energy generated? Each substance is made up of molecules. The molecules in a substance are in a state of random motion. This kinetic energy due to random motion of the molecules of a substance is known as its heat energy. Thus each body possesses heat energy in form of its internal kinetic energy. Greater the heat energy content, hotter will be the body.
Understand the concepts of heat capacity, specific heat capacity and their difference.
Heat is transferred from a body at a higher temperature to a body at lower temperature. The effects of heat on an object are
Conduction, convection, and radiation are the different methods of heat transfer.
Find out whether conduction, convection and radiation is possible through vacuum. Learn about green house effect and its consequences.
All gases show uniform behaviour under similar conditions of temperature and pressure irrespective of their chemical nature or color or odor. This forms the basis of the Gas Laws.
Boyle's Law states that the volume of a given mass of a dry gas is inversely proportional to its pressure at constant temperature.
Charle's Law states that the volume of a given mass of a dry gas is directly proportional to its absolute (Kelvin) temperature if the pressure is kept constant.
This module includes problems based on gas laws, graphical representation of gas laws and significance of gas laws.
SmartTest on Thermometers
SmartTest on Expansion of Solids, Liquids and Gases
SmartTest on The gas laws
SmartTest on Specific Heat and Specific Latent Heat Capacity
SmartTest on Transfer of Heat