Which of the following does not require molecules moving in order to heat something up? conduction radiation convection

Radiation does not require molecules moving in order to heat something up. Radiation uses thermal radiation to heat something up rather conduction and convection. No mass or medium is required for radiation to heat something up.

However, with conduction molecules bump together and will pass the heat, eventually causing something to heat up.

Convection is when something warm moves up into cooler places and then it's a chain reaction to get something warmer.

the answer is a. hope this .

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia