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• 3. • A.> i. crust has greater surface area• ii. > crust cools faster –has no concealed

center – a ball does!• B. i. > plastic cools faster – does not hold heat

like styrofoam• ROCK IS BETTER INSULATOR

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• 3.C. i. > Large cube 1 cm28 small cubes – approx 8 cm2-more area

C. ii. > Small cubes cool faster

C. iii. > small mass losses heat faster

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=6GD6bRcJN9Iz1M&tbnid=hACJGRpjdB5iZM:&ved=0CAUQjRw&url=http://www.ux1.eiu.edu/~cfjps/1300/weathering.html&ei=xl9IUpywJeqg4AOJuIGYBQ&bvm=bv.53217764,d.dmg&psig=AFQjCNG2SRXVIGcnD92YyAL7ZPIp7CUUJw&ust=1380561209418275

Exercise 3 -52

• Phaneritic- course-cooled slowly-should have crystal-ions migrated slowly and formed crystals-nucleation possible

• Aphaneritic-fine ( cools fast! Less time for Na+ to migrate-no crystal formation

Exercise 3- page 52

• A) same rock material• Regions close together- • 1st area cooled fast and was not viscous

• 2nd area –cooled slow –and was very viscous

Exercise 3- page 52

• 3-D –shallow INTRUSIVE IGNEOUS ROCKS• -have-fine course grains• Than DEEP INTRUSIVE IGENOUS ROCKS

• SHALLOW-INTRUSIVE-finer!!!• Deep-intrusive-not finer or course –from thick

lava

Go right to excersice

• Felsic-dense spotty material to the left

• Intermediate

• Mafic –less dense percentages to the righ

Lets all go to the do now-we will come back to this

• Can use page 58 to complete this and hand directly in

Felsic

• white mica" (muscovite• Quart • K –feldspar• biotite

felsic

mafic

• Albite (plagioclase feldspar • Olivine• Augite --Pyroxene• . Hornblende -amphilbole

mafic