Question

10 multiple choice 10 points
sunlight heating the sand on the beach on a hot summer day is an example of -
convection
none of these
radiation
conduction

Explanation:

To determine the heat transfer method:

• Convection: Heat transfer via fluid (liquid/gas) movement. Sunlight heating sand doesn’t involve fluids moving to transfer heat.
• Conduction: Heat transfer through direct contact (e.g., touching a hot pan). Sunlight heats sand without direct contact (sun is far).
• Radiation: Heat transfer via electromagnetic waves (e.g., sunlight, infrared). Sunlight travels through space (vacuum) to heat sand, matching radiation.

Answer:

C. radiation