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Anonymous asked in 社會與文化語言 · 1 decade ago

誰能幫我翻譯一下?NASA關於月球結構的原文

這段文字...幫忙一下~我很有興趣

The interior of the moon

The moon, like Earth, has three interior zones -- crust, mantle, and core. However, the composition, structure, and origin of the zones on the moon are much different from those on Earth.

Most of what scientists know about the interior of Earth and the moon has been learned by studying seismic events -- earthquakes and moonquakes, respectively. The data on moonquakes come from scientific equipment set up by Apollo astronauts from 1969 to 1972.

Crust

The average thickness of the lunar crust is about 43 miles (70 kilometers), compared with about 6 miles (10 kilometers) for Earth's crust. The outermost part of the moon's crust is broken, fractured, and jumbled as a result of the large impacts it has endured. This shattered zone gives way to intact material below a depth of about 6 miles. The bottom of the crust is defined by an abrupt increase in rock density at a depth of about 37 miles (60 kilometers) on the near side and about 50 miles (80 kilometers) on the far side.

Mantle

The mantle of the moon consists of dense rocks that are rich in iron and magnesium. The mantle formed during the period of global melting. Low-density minerals floated to the outer layers of the moon, while dense minerals sank deeper into it.

Later, the mantle partly melted due to a build-up of heat in the deep interior. The source of the heat was probably the decay (breakup) of uranium and other radioactive elements. This melting produced basaltic magmas -- bodies of molten rock. The magmas later made their way to the surface and erupted as the mare lavas and ashes. Although mare volcanism occurred for more than 1 billion years -- from at least 4 billion years to fewer than 3 billion years ago -- much less than 1 percent of the volume of the mantle ever remelted.

因為字太多...所以剩下用補充的方式!!

Update:

Core

Data gathered by Lunar Prospector confirmed that the moon has a core and enabled scientists to estimate its size. The core has a radius of only about 250 miles (400 kilometers). By contrast, the radius of Earth's core is about 2,200 miles (3,500 kilometers).

Update 2:

The lunar core has less than 1 percent of the mass of the moon. Scientists suspect that the core consists mostly of iron, and it may also contain large amounts of sulfur and other elements.

Update 3:

Earth's core is made mostly of molten iron and nickel. This rapidly rotating molten core is responsible for Earth's magnetic field. A magnetic field is an influence that a magnetic object creates in the region around it.

Update 4:

If the core of a planet or a satellite is molten, motion within the core caused by the rotation of the planet or satellite makes the core magnetic. But the small, partly molten core of the moon cannot generate a global magnetic field.

Update 5:

However, small regions on the lunar surface are magnetic. Scientists are not sure how these regions acquired magnetism. Perhaps the moon once had a larger, more molten core.

Update 6:

There is evidence that the lunar interior formerly contained gas, and that some gas may still be there. Basalt from the moon contains holes called vesicles that are created during a volcanic eruption.

Update 7:

On Earth, gas that is dissolved in magma comes out of solution during an eruption, much as carbon dioxide comes out of a carbonated beverage when you shake the drink container.

Update 8:

The presence of vesicles in lunar basalt indicates that the deep interior contained gases, probably carbon monoxide or gaseous sulfur. The existence of volcanic ash is further evidence of interior gas; on Earth, volcanic eruptions are largely driven by gas.

多謝..文字很多

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  • 1 decade ago
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    月亮的內部月亮,象地球一樣,有3 個內部區域 -- 麵包皮,斗篷和核心。 不過,在月亮上的區域的組成,架構和起源在地球上非常不同于那些。 差不多一科學家了解內部的地球和月亮向研究地震事件學習 -- 分別,地震和moonquakes。 在moonquakes上的數據來自科學設備從1969到1972阿波羅太空人建立。 麵包皮月麵包皮的平均濃度是大約43英里(70 公里), 與為地球的麵包皮的大約6英里(10 公里)相比較。 月亮的麵包皮的最外的部分被毀壞,破壞,並且由於它已經忍受的大的影響搞亂。 這個被粉碎的區域在大約6英里的深度下面給完整的材料讓路。 麵包皮的底部因為突然的岩石的增加被確定 在遠的邊上在近的邊和大約50英里(80 公里)上的在大約37英里(60 公里)的深度的密度。 斗篷月亮的斗篷由富有熨斗和鎂的濃的岩石組成。 斗篷在全球融化期間形成。 低密度的礦物質漂流到這層外部的月亮,而濃的礦物質深深沈入它。 過后,由於在深內部方面的一熱的增長,斗篷部分融化。 熱的來源或許是鈾的腐壞(分裂)和其他放射性元素。 這融化的生產的basaltic岩漿 -- 熔融的岩石的身體。 岩漿過后前往表面並且作為母馬熔岩和火山灰爆發。 雖然母馬火山活動存在超過10億年 -- 從至少40億年到不到30億年以前 -- 遠遠少于斗篷的體積的百分之1 再熔。 因為字太多...所以剩下用補充的方式! !

    2005-12-25 14:28:32 補充月勘探者聚集的核心數據確認月亮有核心並且使科學家能夠估計它的尺寸。 核心有只有大約250英里(400 公里)的半徑。 對比起來,地球的核心的半徑是大約2,200英里(3,500 公里)。

    2005-12-25 14:29:24 補充月核心有少于百分之1的月亮的群眾。 科學家懷疑核心主要由鐵組成, 並且它可能也包含大數量的硫磺和其他元素。

    2005-12-25 14:30:06 補充地球的核心被主要由熔融的鐵和鎳做成。 這迅速旋轉的熔融的核心對地球的磁場負責。 一個磁場是一個有磁性的物體在它周遭在地區建立的影響。

    2005-12-25 14:30:27 補充如果一顆行星或者一個衛星的核心是熔融的, 在行星或者衛星的旋轉引起的核心內的運動使核心有磁性。 但是月亮的小,部分熔融的核心不能產生一個全球磁場。

    2005-12-25 14:30:38 補充不過,在月表面上的小的地區是有磁性的。 科學家不能確信這些地區怎樣獲得磁性。 或許月亮曾經有更大,更多的熔融的核心。

    2005-12-25 14:31:03 補充有月內部以前包含的氣體,並且一些氣體仍然可能在那裡的證據。 來自月亮的玄武岩包含稱為被在一次火山爆發期間造成的囊的洞。

    2005-12-25 14:31:29 補充在地球上, 被用岩漿消除的氣體在爆發期間是解決辦法的結果, 儘管二氧化碳非常是你動搖飲料貨櫃的含二氧化碳的飲料的結果。

    2005-12-25 14:31:47 補充在月玄武岩裡的囊的存在表明深的內部包含氣體,或許一氧化碳或者氣體的硫磺。 火山灰的存在是內部氣體的更進一步的證據; 在地球上,氣體基本上驅趕火山爆發。 多謝..文字很多

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