Plate tectonics processes and landforms

Question 1

divergent boundaries processes:

Answer 1

• sea floor spreading
• rifting (crustal tension)
• decompression

Question 2

divergent boundaries landforms created:

Answer 2

• rift valley
• pillow lava
• basalt
• shallow focus earthquakes
• shield volcanoes

Question 3

divergent boundaries description of movement/processes creating landforms

Answer 3

divergent motion between the plates creates rifting and thinning of the crust. mantle rises towards the surface below the ridge, lowering pressure (decompression) and partially melting rock, producing basaltic volcanoes and pillow lava in underwater eruptions. as the plates move further apart, new ocean litosphere is formed at the ridge (sea floor spreading).

Question 4

example of a divergent boundary

Answer 4

mid-atlantic ridge

Question 5

example of a convergent boundary (o-c)

Answer 5

the andes

Question 6

convergent boundary (o-c) processes

Answer 6

• subduction
• partial melting
• friction
• crustal shortening

Question 7

landforms created by convergent boundary (o-c)

Answer 7

• trench
• benioff zone
• andestite
• strato volcanoes
• explosive eruptions
• shallow focus earthquakes
• fold mountains
• subduction zone