In a country with a cold climate, the ground is blanketed with snow. Outside, there is a heap of black sand whose temperature is the same as the snow. A man spreads a thin layer of this sand on top of the snow. Why does the black sand help the snow to melt during the day?
- AAny thermal energy still left in the sand will melt the snow.
- BThe black sand is a good absorber of the infrared radiation from the Sun.
- CThe black sand is a good conductor of thermal energy.
- DThe black sand lowers the melting point of the snow.