Question

what happens during radiation?
heat is transferred from warmer objects to cooler objects without touching.
heat is transferred from warmer objects to cooler objects by moving fluids.
heat is transferred from warmer objects to cooler objects

Explanation:

Radiation is a form of heat transfer. In radiation, heat moves in the form of electromagnetic waves. It doesn't need a medium (like a solid, liquid, or gas) to transfer heat. So, heat can be transferred from a warmer object to a cooler object without the two objects touching each other. The second option describes convection (heat transfer by moving fluids), not radiation.

Answer:

Heat is transferred from warmer objects to cooler objects without touching.