EXTRA GEO EXAM 2

Question 1

Lithosphere features

Answer 1

100 km thick, rigid, strong, cold, brittle, less dense

Question 2

Asthenosphere features

Answer 2

100 to 300km, plastic, pliable, weak, hot, flows, more dense

Question 3

Crust features

Answer 3

1. Made up of oceanic and continental crust
2. 6 to 25 miles thick
3. covered by sediment and sedimentary rock

Question 4

Mantle features

Answer 4

1. makes up about 80% of the earth
2. made mostly of olivine

Question 5

Evidence for continental drift

Answer 5

identical: mountains, fossils, rocks, continents, glacial plains and ice flows

Question 6

examples of divergent margins

Answer 6

mid-atlantic ridge, iceland

Question 7

physical aspects of divergent margins

Answer 7

pulling, a lot of low-magnitude and shallow earthquakes, intense volcanism (basaltic)

Question 8

physical aspect of oceanic-oceanic crust convergence zones

Answer 8

compression, a lot of shallow/deep and high magnitude earthquakes, abundant volcanism

Question 9

examples of oceanic-oceanic crust convergence

Answer 9

japan, aleutian islands

Question 10

features of oceanic-continental

Answer 10

trenches, volcanic chains

Question 11

physical aspects of oceanic-continental crustal convergence

Answer 11

compression, a lot of shallow/deep earthquakes with high magnitude, abundant volcanism

Question 12

examples of oceanic to continental

Answer 12

andes, cascades

Question 13

features of continental to continental

Answer 13

double thickness, large mountain chains

Question 14

physical aspects on continental-continental crustal convergence

Answer 14

compression, earthquakes (high magnitude, shallow), mountains

Question 15

examples of continental crust collisions

Answer 15

himalayas, alps

Question 16

transform features

Answer 16

shallow earthquakes, shear stress, no volcanism