2.3 plate tectonics

Question 1

how are earthquakes distributed?

Answer 1

along all types of plate boundaries
convergent: broad belt of earthquakes along convergent plate boundaries in pacific ring of fire
divergent: narrow belt of earthquakes along divergent plate boundary at mid-atlantic ridge
transform: narrow belt of earthquakes along transform plate boundary at san andreas fault

Question 2

what is the pacific ring of fire?

Answer 2

broad belt around pacific ocean where most of earthquakes and active volcanoes occur.
convergent: pacific plate moving towards philippine plate
divergent: pacific plate moving away from cocos plate
transform: pacific plate sliding past north-american plate at san andreas fault

Question 3

where are volcanoes not found along and why?

Answer 3

transform plate boundaries & c-c convergent
at these boundaries, magma does not rise to earth’s surface to form volcanoes
hot-spot volcanoes located away from plate boundaries

Question 4

how are volcanoes distributes?

Answer 4

1.volcanoes are located near convergent and divergent plate boundaries. At these plate boundaries, magma rises to surface, forming volcanoes
2. there are belts of volcanoes along o-c convergent plate boundaries. a broad belt of volcanoes along subduction zone in pacific ring of fire. along o-o divergent plate boundary. narrow belt of volcanoes along divergent boundaries between north american and Eurasian plates.