Question

Two identical metal tins with water are kept in sunlight. One is black and the other shiny. Why does water in the black tin become hotter?

Options

• Black surfaces conduct heat better

• Black surfaces absorb more radiation

• Shiny surfaces absorb more radiation

• Black paint cools the tin

Answer 1

Black surfaces absorb more radiation

Explanation:

Black surfaces absorb more solar radiation and reflect less, so they heat up faster.