Answer to Dictation 1
Little is known about the geology of the very centre of Earth.
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Answer to Dictation 2
A scorching hot mass of molten rock and gas surrounded by a solid rock mantle.
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Answer to Dictation 3
The core is found 2,900 kilometres below Earth's surface.
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Answer to Dictation 4
Her calculations showed the possibility of a second core.
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Answer to Dictation 5
Consisting of a layer of fluid rock, at the bottom of the mantle.
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Answer to Dictation 6
She spoke about why she found the Earth's core so intriguing.
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Answer to Dictation 7
We can learn by using deep earthquakes as a way to probe these questions.
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Answer to Dictation 8
We want to know exactly how fast the mantle flows.
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Answer to Dictation 9
It affects how much heat the planet retains for how long.
Go to Dictation 10
Answer to Dictation 10
Our current understanding is very limited and includes a lot of assumptions.
See the earth's core lesson for the whole text.
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