Heat

The topic briefly explains heat and temperature along with their units. It describes heat capacity and the factors affecting the heat absorbed or heat released. We will also study the instruments used to measure temperature.

This topic discusses the three main effects of heat, which are change in temperature of the body, change in size or shape of the body, and change in the state of the body. This concept is explained with the aid of examples and diagrams.

This topic comprises the term thermal expansion and its different types. It also explains the concept of thermal stress along with the graphs related to thermal expansion of water and the coefficient of volume expansion of copper.

This topic helps us understand the fact that how heat transfer takes place. It also explains the modes of heat transfer, including convection, conduction, and radiation, with examples and illustrations.

This topic defines conductors as substances that allow heat to pass through easily. It highlights some examples of conductors and insulators such as silver, copper, wood and iron. It also includes activities based on the concept.

This topic explains the use of a thermos flask to keep a hot liquid hot and cold liquid cold. The structure of a thermos flask is discussed here. It also describes the role of the vacuum between the walls of the bottle.