Question

22/25 which of the following is an example of convection? a hair dryer is drying up your hair. when a car engine turns hot after being turned on. when you are making soup and the water is rising and lowering.

Explanation:

Convection is the transfer of heat through the movement of a fluid (liquid or gas). In a hair - dryer, hot air (a gas) is blown onto the hair, which is forced - convection. When making soup, the rising and lowering of water is due to natural convection as the heated water becomes less dense and rises, while the cooler, denser water sinks. A car engine turning hot after being turned on is mainly due to heat - generation within the engine and conduction within its components, not convection.

Answer:

A. A hair dryer is drying up your hair., C. When you are making soup and the water is rising and lowering.