Science MCQs

The heated metal tyre contracts as it cools down creating a tight grip on the wheel.

Loosely hung wires have slack to contract in the cold without snapping.

Convection is the transfer of heat by the actual movement of the fluid itself.

Radiation does not require a medium and can travel through a vacuum.

Thermal insulation materials reduce the rate of heat flow into or out of a building.

Cork is a poor conductor of heat and is therefore a good insulator.

The gaps allow the concrete slabs to expand on hot days without cracking or buckling.

Cooling an object reduces the thermal motion of its particles decreasing their average kinetic energy.

0 K is known as Absolute Zero the theoretical point where particles have minimal motion.

Convection currents are the main method of heat transfer within liquids and gases.