MCQOPTIONS
Saved Bookmarks
| 1. |
Why is the sky blue when viewed from the earth? |
| A. | reflection of sunlight |
| B. | scattering of longer wavelengths of sunlight in the atmosphere |
| C. | refraction of sunlight |
| D. | scattering of shorter wavelengths of sunlight in the atmosphere |
| Answer» E. | |