Answer:
Radiation
Explanation:
Radiation is the transfer of thermal energy by electromagnetic waves. In this form of energy transfer, no material medium is required.
It is through this form of energy transfer that allows heat to reach the earth surface from the sun.
- There are three forms of thermal energy transfer
- Conduction involves contact between two solid bodies
- Convection is in fluids using density differences.
- Radiation uses electromagnetic radiations.
