EVERYDAY SCIENCE

Detailed explanation-1: -Air (a mixture of gases) and water are poor conductors of thermal energy.

Detailed explanation-2: -Fluids and gases are less conductive than solids. This is due to the large distance between atoms in a fluid or (especially) a gas: fewer collisions between atoms means less conduction.

Detailed explanation-3: -The least efficient method of heat transfer is radiation. In this case, heat moves through space without the assistance of a physical substance. This is how the Sun’s heat reaches the Earth.

Detailed explanation-4: -Radiation is a method of heat transfer that does not rely upon any contact between the heat source and the heated object. For example, we feel heat from a heated pot and flame even though we are not touching them. Radiation is the least efficient method of heat transfer.

Detailed explanation-5: -Conduction transfers heat energy in solids. The moving particles of a warm soild material can increase the heat energy of the particles in a cooler solid material by transferring it directly from one particle to the next. Since particles are closer together, solids conduct heat better than liquids or gases.