Gap Fill - Earth's Core - Level 5


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   calculations      crust      data      layer      little      molten      planet      radius      ring      second   

Paragraph 1

We know about the centre of Earth. Geologists believed our had just one core – a hot mass of rock and gas surrounded by a rock mantle. The mantle is a between the earth's and core. The core is 2,900 kilometres below Earth's surface. It has a of around 3,485 kilometres. Scientists have found that there may be a core. Geophysicist Sunyoung Park analyzed from a 560-km-deep earthquake. Her showed the possibility of a second core. It consists of a of fluid rock at the bottom of the mantle.

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