Final answer:
Radiation is the transfer of energy without transporting matter, occurring via electromagnetic waves, unlike conduction or convection.
Step-by-step explanation:
The word that matches the transport of energy without the transport of matter is radiation. This process involves the transfer of energy through emission and absorption of the electromagnetic waves. Unlike conduction, which requires heat transfer through direct physical contact, or convection, which involves the macroscopic movement of fluids, radiation does not require a medium and can transfer energy through empty space, as is the case with the Sun's energy reaching Earth.