Thermal Properties of Matter — Important Questions

Thermocol

Thermocol has very low thermal conductivity (0.01 Wm⁻¹K⁻¹), making it an excellent thermal insulator.

Radiation

Space is a vacuum, so conduction and convection cannot occur. Heat from the Sun travels as electromagnetic waves through space via radiation.

Black surface

Black surfaces absorb most of the incident radiation, while shiny or white surfaces reflect more.

Convection

In fluids (liquids and gases), heat is transferred by the actual movement of heated particles, known as convection currents.