Question

5 heat transfers by radiation when— a ocean water warms in sunlight. b a shirt touches a hot iron. c an ice cube melts in a person’s hand. d a pan heats up on an electric stove.

Explanation:

Heat transfer by radiation occurs via electromagnetic waves, without direct physical contact or a medium.

• Option A: Sunlight reaches Earth as electromagnetic radiation, warming ocean water without direct contact, which is radiation.
• Option B: Direct contact between shirt and iron is conduction.
• Option C: Direct contact between ice and hand is conduction.
• Option D: Direct contact between pan and stove is conduction.

Answer:

A. ocean water warms in sunlight