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110、地球的結構
Structure Of The Earth
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Dr. Binocs..
望遠鏡博士
Dr. Binocs!
望遠鏡博士
Oh, hello friends!
噢 你好 朋友們
The best part of a pizza is its crust!
披薩餅最棒的部分就是它的外皮了
Hmm… yummy…
嗯 好吃
Just like this pizza,
就像比薩一樣
the earth too has a crust,
地球也有一層外皮
but with no cheese in it.
只是裡面沒有奶酪
Hahaha…
哈哈哈
So let’s learn something about the structure of the earth today.
今天我們就來了解一下地球的結構吧
It consists of the Crust, Mantle and Core!
地球是由地殼 地幔和地核組成的
Zooooom in!
咱們把鏡頭拉近
This is the Earth’s Crust.
這是地殼
It consists of
組成地殼的是
all kinds of rocks, soil
各種巖石 土壤
and everything you see above the earth’s surface!
以及 地球表面所有的東西
You will be surprised to know that the crust,
你會驚訝地發現地殼
that is the land on which we walk
也就是我們腳下的陸地
is almost three times thicker than the crust under the oceans.
幾乎比海底的地殼要厚上三倍
And it extends to about 25 miles.
其厚度大約有25英裡
The earth’s crust floats on this layer which is called the Mantle.
地殼下面這層結構 被稱為地幔
It is made of thick, solid, rocky substance
地幔是由厚實的巖石物質組成的
And amounts to about 85% of total mass of earth.
地幔約佔地球總質量的85%
The first 50 miles of the mantle
最初五十英裡的地幔
consist of very hard, rigid rocks.
是由堅硬的巖石構成
The next 150 miles
之後150英裡的地幔
are made up of super-hot solid rocks.
是由極熱的固態巖石構成
Below that
再往深處
for the next several hundred miles the earth’s mantle
接著數百英裡的地幔
is believed to be
則被認為是
made up of very solid and sturdy rock materials.
由異常堅固的巖石材料構成
The mantle is about 1800 miles thick
地幔厚度大約有1800英裡
and by far the largest layer of earth.
是地球結構中最厚的部分
The earth’s outer core
構成地球外核的
is made up of super-hot liquid molten substance
是溫度超高的被融成液態的物質
called Lava.
它被稱為熔巖
This lava is believed to be made of iron and nickel.
人們認為熔巖的成分是鐵和鎳
It extends to a depth of 3000 miles beneath the earth’s surface.
地球外核厚度達到了3000英裡
And finally, we have reached earth’s inner core.
最後 我們抵達了地球內核
The inner core extends another 900 miles towards the center of the earth.
內核的邊界距離地球中心有900英裡
It is believed that this inner core
人們認為地球內核
is a solid ball made of iron and nickel.
是一個由鐵和鎳組成的固態球體
Trivia Time
小常識時間
The crust occupies less than 1% of earth’s volume.
地殼在地球體積中的佔例低於1%
The inner core is the hottest part of the earth
內核是地球最熱的部分
and it is as hot as the surface of the sun
已經達到了太陽表面的溫度
Surprising, isn’t it?
讓人很驚訝 不是嗎?
Looks like it’s time for me to Zoooom out
看來我該在被烤熟前
Before I get baked in this heat.
把鏡頭推遠結束本期視頻了
Tune in next time for more fun facts!
記得下次來收聽更多有趣的話題喲
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