Gap Fill - Earth's Core - Level 4


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  • After this paragraph, go to Paragraph 2.

   bottom      core      crust      data      earthquake      little      molten      radius      second      surface   

Paragraph 1

We know about the centre of Earth. Geologists believed it had just one – a hot mass of rock surrounded by a rock mantle. This is a ring between the earth's and core. The core is 2,900 km below Earth's . It has a of 3,485 km. Scientists believe there may be a core. A geophysicist analyzed from a 560-km-deep . It showed the possibility of a second core at the of the mantle.

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