Electromagnetic radiation is a form of energy transfer that does not require mass exchange or direct contact between heat exchanging bodies.

Question

BlackTom AI · Accepted Answer

Consider the statement about electromagnetic radiation as a mode of energy transfer.
Option 1: True. EM radiation transfers energy without requiring mass exchange or direct contact between the radiating body and the receiving body. Examples include sunlight warming the Earth, the glow of a burning flame, or microwaves heating food—none of which involve mass transfer between the bodies at the moment of energy transfer. This aligns with the fundamental concept that electromagnetic waves propagate through space and can transfer energy across a vacuum or through matter without physical contact.
Option 2: False. If we chose this option, we would be asserting that radiation always involves mass transfer or direct contact, which contradicts the physical mechanism of EM waves. EM radiation travels as oscillating electric and magnetic fields and does not necessitate the transfer of matter; thus, this option misstates the nature of radiative energy transfer.
In summary, the statement correctly describes electromagnetic radiation as a non-contact means of energy transfer that does not require mass exchange, making True the accurate choice.

CLMTGR5001_002_2025_3 - Dynamics of Climate Variability and Chan PRACTICE QUIZ: Week 2 Lecture 1

Electromagnetic radiation is a form of energy transfer that does not require mass exchange or direct contact between heat exchanging bodies.

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