Question

use this sentence: on a summer day, the heat of the land heats the air, causing it to rise and spread before cooling over the ocean, creating a breeze. how is thermal energy transferred when this happens? (1 point) through convection through radiation through conduction through refraction

Explanation:

1. Recall the definitions of each heat transfer method:

• Convection: Transfer of heat through the movement of fluids (liquids or gases) due to density differences caused by temperature changes. In the given scenario, the land heats the air, making it less dense (rise), then it spreads and cools over the ocean (sinking of cooler, denser air), which is the movement of air (a gas) transferring heat.
• Radiation: Transfer of heat via electromagnetic waves (e.g., sun's heat to Earth), not involving fluid movement.
• Conduction: Transfer of heat through direct contact between materials (e.g., touching a hot pan), not applicable here as it's about air movement.
• Refraction: Bending of light, not a heat transfer method.

1. The process described (air rising, spreading, cooling) matches convection.

Answer:

A. through convection