Question

which describes radiation?
heat transfers by moving fluids.
heat transfers when objects are in direct contact.
heat transfers without a touch or a medium.

Explanation:

• Radiation is a form of heat transfer that does not require direct contact between objects or a medium (like air or water) for heat to be transferred.
• Heat transfer by moving fluids is convection.
• Heat transfer when objects are in direct contact is conduction.

Answer:

Heat transfers without a touch or a medium.