Answer:
thermal
electromagnet
matter
Step-by-step explanation:
The complete question is
Fill in the term that best completes each statement.
Radiation transfers______ energy by________ waves. These waves transfer energy from a warmer object to a cooler object, with or without________.
Answer -
Radiation carries heat energy (thermal energy). Radiation is a form of electromagnetic wave that do not require any medium to travel and hence can transmit energy without being in contact of any matter.