What is the primary mode of heat transfer in a vacuum?
Correct Answer: Radiation
- Step 1: Understand what a vacuum is. A vacuum is a space that has no matter or particles in it.
- Step 2: Know the three main modes of heat transfer: conduction, convection, and radiation.
- Step 3: Realize that conduction requires particles to transfer heat through direct contact.
- Step 4: Understand that convection also needs particles to move heat through fluids (liquids or gases).
- Step 5: Since a vacuum has no particles, conduction and convection cannot occur.
- Step 6: Learn that radiation is the transfer of heat through electromagnetic waves, which can happen in a vacuum.
- Step 7: Conclude that in a vacuum, radiation is the only way heat can be transferred.
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