Volcanoes and mtns

Question 1

Common igneous rocks

Answer 1

Granitic rocks: quartz feldspar
Andesitic: andesite, diorite | more viscous
Basaltic rocks: basalt gabbro

Question 2

Eruption factors

Answer 2

Viscosity: the higher, the more explosive
Gas content: higher viscosity have more trapped gases

Question 3

Anatomy of volcano

Answer 3

Magma chamber > Conduit > Vent
Pyroclastic / basaltic cones

Question 4

Deformation

Answer 4

Change in shape or pos of a rocky body in response to stress

Question 5

Strain

Answer 5

Change in shape caused by stress, lose original shape during deformation

Question 6

Elastic deformation

Answer 6

Rock returns to og size and shape
Else, elastic limit surpassed and either bends or breaks (ductile, brittle)

Question 7

Anticlines, synclines

Answer 7

Anticlines are upfolded arched sedimentary layers, synclines are downfolded troughs of rock layers

Question 8

Joints and faults

Answer 8

Joints: fractures in rocks
Faults: fractures in rocks along motion lines