Question

when cooking pasta, the water and noodles continuously move up and down due to a) conduction b) convection c) transformation d) radiation

Explanation:

When cooking pasta, the continuous up - and - down movement of water and noodles is due to convection. Convection is the transfer of heat by the movement of a fluid (in this case, water). Heated water rises, cooler water sinks, creating a circular motion that moves the noodles. Conduction is the transfer of heat through direct contact, radiation is the transfer of heat through electromagnetic waves, and "transformation" is too general a term here.

Answer:

B. convection