本题目来源于试卷: Physics Unit24: Wave Nature of Light，类别为 通用国际物理
[单选题]
On a clear day, the sky acxr*6qdba8 4aca2,;qaxxnz2ppears to be more blue toward the zexc q1 4fc+1u1erct 8pqnith (overhead) than it does toward the horizon. This occ4q8cefc1 c1tupx + r1qurs because
A. the atmosphere is denser higher up than it is at the Earth's surface.
B. the temperature of the upper atmosphere is higher than it is at the Earth's surface.
C. the sunlight travels over a longer path at the horizon, resulting in more scattering.
D. none of the given answers
参考答案: C
本题详细解析:
暂无
| 
