Question

1. what is a trench in plate tectonics?

a high ridge where plates collide
a place where new crust is forming
a deep, narrow depression where a plate is subducting
a crack where lava comes out

Explanation:

• A trench in plate tectonics is formed at convergent plate boundaries.
• When one tectonic plate is subducting (being forced beneath another plate), it creates a deep, narrow depression.
• A high ridge where plates collide is more characteristic of mountain - building (e.g., continental - continental collision).
• A place where new crust is forming is a mid - ocean ridge (divergent boundary).
• A crack where lava comes out is more related to volcanic activity at various types of boundaries but not specifically a trench.

Answer:

A deep, narrow depression where a plate is subducting