Thermal Energy - 8th

Thermal energy is the total kinetic energy of the particles in a substance, which is related to its temperature.

Conduction is the method of heat transfer through direct contact between materials, where heat moves from the hotter object to the cooler one.

Convection is the method of heat transfer that occurs in fluids (liquids and gases) through the movement of the fluid itself.

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, and does not require a medium.

Ice cubes absorb heat from the warm room, causing them to melt.

Heat always transfers from the hot object to the cold object until thermal equilibrium is reached.

Thermal equilibrium is the state in which two objects in contact with each other reach the same temperature and no heat flows between them.

Speed = Distance / Time.

The bus travels 2500 meters in 5 minutes.

Average speed = 180 meters / 30 seconds = 6 m/s.