21ST CENT.AST.W/WKBK+SMARTWORK >BI<
21ST CENT.AST.W/WKBK+SMARTWORK >BI<
6th Edition
ISBN: 9780393415216
Author: Kay
Publisher: NORTON
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Chapter 8, Problem 7QP
To determine

The reason for the Scientists know the history of Earth’s magnetic field from the given options.

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1) Describe the interior of the earth. Label and list all the layers. Explain how the earth’s megnatic field is formed. ( This is question from PH-111)
Some planets have very strong magnetic fields. What features must a planet have to cause this? a.both rapid rotation and a conducting liquid core b.only a rapid rotation c.only a liquid conducting core d.both a rapid rotation and a solid metallic core e.only a metallic core
That the moon has no magnetic field implies that   a. the moon is spinning too slowly to produce a magnetic field.   b. the interior of the moon is too hot to produce a magnetic field.   c. the crust of the moon is so thick that the magnetic field can not get out of the interior.   d. the moon’s core contains little if any molten iron.   e. the moon is moving further from Earth.
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