Question

which of the following is an example of energy transfer by convection? you step onto a cool tile floor and your body temperature lowers popcorn pops because hot air is blown over it you become overheated from wearing a coat in the summer

Explanation:

1. Analyze the first option: Stepping onto a cool tile floor and body temperature lowering is heat transfer by conduction (direct contact between solid surfaces), not convection.
2. Analyze the second option: Convection is heat transfer by the movement of fluids (liquids or gases). Hot air (a gas) being blown over popcorn transfers heat to the popcorn, causing it to pop. This is convection as it involves the movement of a fluid (air) carrying heat.
3. Analyze the third option: Becoming overheated from wearing a coat in summer is related to insulation (the coat traps heat from the body, preventing heat loss), not convection.

Answer:

B. Popcorn pops because hot air is blown over it