Science MCQs

Heat is thermal energy that flows from a warmer object to a cooler one.

Heat flows naturally from a higher temperature object to a lower temperature object.

The three modes of heat transfer are conduction convection and radiation.

Conduction is heat transfer through a material without overall movement of the material itself.

Solids especially metals conduct heat best due to closely packed particles.

Metals like copper are good conductors; wood plastic and air are insulators.

Styrofoam traps air and is a good insulator; metals are conductors.

Free electrons in metals move quickly and transfer energy efficiently.

Convection involves the movement of fluids (liquids or gases) carrying heat.

Convection requires fluid movement so it happens in liquids and gases.