Planetary Tectonics

Question 1

tectonics of mercury

Answer 1

-network of scarps
-jumbled terrain opposite of the caloris

Question 2

scarps (mercury)

Answer 2

-long cliffs formed when the planet shrank by 1-2 km

Question 3

tectonics of Venus

Answer 3

-volcanic domes that were pushed up by rising plumes of magma

Question 4

tectonics of mars

Answer 4

-volcanic bulges (tharis and elysiun)
-made from the crust

Question 5

Valles Marineres

Answer 5

• on planet mars
  -huge canyon

Question 6

tectonics of earth

Answer 6

-2 types of crust (oceanic crust and continental crust)

Question 7

oceanic crust

Answer 7

-covers 71% of planet
-basalt
-3.0 density
-young (less than 200 mill. yrs old)

Question 8

continental crust

Answer 8

-covers 29%
-granite
-2.7 density
-up to 3.8 bill. yrs old

Question 9

plate motions lead too…

Answer 9

-crust deformed at plate boundaries
-mountain ranges with and without
volcanoes
-volcanic island arcs
-rift valley
-mdi ocean ridges

Question 10

continental plate converge

Answer 10

-mountain ranges without volcanoes
-continental crust on both sides
-ex. Himalayan and appellation

Question 11

continental plates diverge

Answer 11

-ex. rift valley in Africa will slowly spread until new ocean is made
-caused birth of Atlantic ocean

Question 12

Oceanic Plates Converge

Answer 12

-ex. volcanic island arc in Japan
-oceanic crust sinks and new continental crust is made

Question 13

continental and oceanic converge

Answer 13

-mountain ranges with volcanoes like the Andes
-oceanic crust sinks and new continental crust is made

Question 14

how oceanic crust is made

Answer 14

-made at mid ocean ridges and then destroyed in subduction zones “recycled”

Question 15

how continental crust is made

Answer 15

-made in subjunction zones and accumulates