Here are the plate boundaries associated with each landform or event:
-
Ocean Trench:
- Convergent boundary (where one tectonic plate is subducting beneath another).
-
New Sea Floor:
- Divergent boundary (where tectonic plates are moving apart and magma rises to form new oceanic crust).
-
Earthquakes:
- Transform boundary (where two plates slide past each other).
- Convergent boundary (where plates collide, often resulting in significant seismic activity).
- Divergent boundary (earthquakes can also occur here due to tectonic movements).
-
Rift Valley:
- Divergent boundary (formed when tectonic plates are moving apart, often resulting in the rifting of the continental crust).
In summary:
- Ocean Trench: Convergent
- New Sea Floor: Divergent
- Earthquakes: Transform, Convergent, Divergent
- Rift Valley: Divergent