hight 發問時間： 科學地理學 · 1 0 年前

地殼.地函.地核的英文以及介紹10點

2 個解答

• 1 0 年前
最佳解答

地殼 Earth crust

地函 Earth's mantle

地核 Earth's core

地殼（crust）是指地球地表至莫霍面之間一個主要由矽酸鹽礦物為主體的岩石構成的薄殼。它的質量只占全地球0.2%，按結構分為大陸地殼和海底地殼兩種。

地函是指位於地球內部，介於地殼和地核之間的一個帶，厚度約3480km。地函分上部地函(upper mantle)和下部地函(lower mantle)。中間有一過渡帶(transition zone)。

http://dunite.mr.nsysu.edu.tw/word-43.htm

(地涵示意圖)

地核（Core）位於地球的最內部。半徑約有3470 km，高密度，平均每立方厘米重12克。溫度非常高，約有4000~6000℃。

它可再分為核心和外核。由地震波的傳送可知，外核是熔融的。而從相信是源自其他行星核心的鐵隕石推測，地核也是由鐵和鎳組成。地球磁場的自激發電機理論也要求一個液態金屬外核的存在才能成立。至於核心，則極有可能是固體鐵。

• kinsda
Lv 7
1 0 年前

Inside the Earth Printout: Label the Inside of the Earth The Earth is made of many different and distinct layers. The deeper layers are composed of heavier materials; they are hotter, denser and under much greater pressure than the outer layers. Core: The Earth has a iron-nickel core that is about 2,100 miles in radius. The inner core may have a temperature up to about 13,000°F (7,200°C = 7,500 K), which is hotter than the surface of the Sun. The inner core (which has a radius of about 750 miles (1,228 km) is solid. The outer core is in a liquid state and is about 1,400 miles (2,260 km) thick. Mantle: Under the crust is the rocky mantle, which is composed of silicon, oxygen, magnesium, iron, aluminum, and calcium. The upper mantle is rigid and is part of the lithosphere (together with the crust). The lower mantle flows slowly, at a rate of a few centimeters per year. The asthenosphere is a part of the upper mantle that exhibits plastic properties. It is located below the lithosphere (the crust and upper mantle), between about 100 and 250 kilometers deep.