Unformatted text preview: 2 ) The Earth is a giant magnet
4 Something within the Earth must be
generating the Earth's magnetic field .
4 The Earth has a certain mass .
4 The core of iron and nickel explains
the magnetism + mass
3 ) Earthquake body waves ( primary + secondary )
travel through the Earth and come out the
other side .
4 They change velocities and refract.
-1 4 "P" waves travel + increase in
Gases velocity .
1 1 6 "5 " waves cannot travel through
liquids . Based on the pattern of
" missing " waves on the opp. side
of the Earth from an origins of
an earthquake , we can infer that
VOLCANIC HAZARDS the outer core of the earth is
. nage and liquid .
14) 5.19 7 Earth's structure to the
Crust - 5- 70 km deep
. Mud Upper mantle - 670 km de from crust
moves Lower mantle - 2890 km from crust
of Outer core - 5150 km from crust
2Inner core - 63 71 km from crust
Cases - smallest
Distribution on Earth is not random
. It is most often at plate boundaries , especially
subduction zones and ocean ridges .
. Most significant volcanoes occur in the "Ring of Fire
( surrounds the Pacific ) + thru the Mediteranean + Asia Min...
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- Fall '10