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\fwcvxv C Geological Catastrophes, EART 20
Winter Quarter, 2009 EART 20 — Winter2009
Homework #1 Units: 1.0 km = 1000 m = 105 cm =106 mm (same as 1 m = 100 em = 1000 mm),
1 km/s = 103 m/s = 105 cm/s. 1 million = 106; 1 billion = 10’ 1. One millimeter per year (mm/yr) is equivalent to how many kilometers per million years
(km/my)? lmwyyr :OOOOD\\I<W‘/yr: lkm/Mly 21 [f the velocity of an object is given as 10 mm/year, what is the velocity of the object in
units of km/million years?
3. The San Andreas Fault accumulates slip at the rate of 3.3 cm/year. In how many years will the San Andreas Fault accumulate 5.0 In of slip? Use the formula: T = % where T
is time, S is slip and V is the rate at which slip is accumulated. T: 5%?) : \S,i5\5i Symr3 4. Scientific notation for 5300000 km = ? S. g x '0‘” 5. Solve the following problems: 1026/1032? 105
106*10'3:? 10'5
103*10”=7 \D'S
log(10’)=? 3
log(100000)=? 5
iflog(x)=3thenx=? ‘03 For a review of logarithm’s and exponentials, see the following resource:
http:/fwww.sosmath.comf'alacbrw’logs/loa l i’lonl .html
http ://www isosn1a_t_hﬁ.g_o_1_11/a1gebraflogs/ Iggy 1022 . l‘ltml
httpz/ /WWW ,sosmath . com/ algebra/lo gs/ log3/1023 .html
http://www.sosmath_com/aloebral'logsi’log4ﬂog4html Geological Catastrophes , EART 20
Winter Quarter, 2009 6. On the diagram included below, label the major regions of the Eanh. For more in depth (pun?) analysis, what is one distinguishing characteristic of each region?
4
3 i. lW th 2 7. What are the main energy sources that drive geoloﬁfal processes on Earth? l) \MWUA 9‘E {ﬁrﬂ“\'%ﬁ(<3x‘r\mi \39 *0?) Z.) amt/TH
33 earth‘s Mural min kit mg,“ 8. Where would you expect brittle material behavior within the earth, and where would you expect ductile or plastic behavior V _ ‘
brii‘Hx; re 0% at Eartst swisac—c Irikesplrro Audi lea/p playHo goblin/ref 9. What is isostasy and what are the important parameters involved?
wLu» yvum‘Hb (W 5&5 of) st) ewfylrkl'ﬂ Sin/73 m
ewuﬁ \\ km U M l ...
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