Question

a driver touches a car’s steering wheel on a hot day. how is heat transferred to the driver’s hands?

• conduction
• convection
• electromagnetism
• radiation

Explanation:

1. Recall the definitions of heat transfer methods:

• Conduction: Heat transfer through direct contact between materials (molecules transfer heat through collisions).
• Convection: Heat transfer through fluid (liquid or gas) movement.
• Electromagnetism: Deals with electric and magnetic forces, not heat transfer in this context.
• Radiation: Heat transfer via electromagnetic waves (no medium needed).

1. Analyze the scenario: The driver touches the steering wheel (direct contact). So heat moves from the hot steering wheel to the driver’s hands through direct contact, which is conduction. The initially selected "radiation" is incorrect because radiation doesn't require contact. Convection needs a fluid, and electromagnetism is irrelevant here.

Answer:

A. conduction