Name: 為什麼大海是藍色的？| 為什麼大海是藍色的？ (Why is the ocean blue? | #aumsum)
Uploaded: 2021-01-14T08:10:51.000Z
Duration: 1 min 2 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

轉承詞

Because ocean water reflects blue color of the sky.

The main reason for oceans to be blue is the way water molecules absorb and scatter the colors of sunlight.

They are red, orange, yellow, green, blue, indigo and violet.

Now, when sunlight falls on the ocean, it passes deep into the water.

Here, red, orange, yellow and green colors of sunlight.

Are absorbed more strongly by water molecules.

While, blue, indigo and violet colors are not absorbed much.

Instead, they are scattered, making the ocean appear blue to us.

However, as the blue shades penetrate deeper into the ocean, eventually they also get absorbed.

Hence, at greater depths the ocean is completely dark.

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