Question

question 7 of 25
what does it mean for heat to be transferred by convection?
a. energy is transferred through converting bond energy to kinetic energy.
b. energy is transferred when one molecule collides with another.
c. energy is transferred through moving currents of warmer air or liquid.
d. energy is transferred when molecules absorb electromagnetic waves.

Explanation:

Convection is the transfer of heat by the movement of a fluid (liquid or gas). Warmer parts of the fluid rise while cooler parts sink, creating currents that transfer heat. Option C describes this process. Option A is not related to convection. Option B describes conduction (heat transfer through molecular collisions). Option D describes radiation (heat transfer via electromagnetic waves).

Answer:

C. Energy is transferred through moving currents of warmer air or liquid.