Question

5 multiple choice 1 point
the youngest rocks on the ocean floor are typically located near what feature?
○ a mid - ocean ridge
○ a continental shelf
○ an abyssal plain
○ a subduction trench
6 multiple choice 1 point
at which location would earthquakes be least likely to occur?
○ 1
○ 2
○ 3
○ 4

Explanation:

• Question 5: Mid - ocean ridges are areas where new oceanic crust is formed through volcanic activity. As magma rises and solidifies, it creates new rock. So, the youngest rocks on the ocean floor are near mid - ocean ridges. Continental shelves are parts of continents submerged under shallow water and are not sites of new crust formation. Abyssal plains are flat areas of the ocean floor with older sediment - covered crust. Subduction trenches are where older crust is destroyed as it is forced back into the mantle.
• Question 6: Earthquakes occur due to the movement of tectonic plates. Plate boundaries (such as subduction zones - location 2, areas near mid - ocean ridges - location 4, and areas where plates interact in subduction - related processes - location 3) are sites of high seismic activity. Location 1 is in the interior of a tectonic plate (the continental interior in this cross - section). The interior of a plate is relatively stable compared to plate boundaries, so earthquakes are least likely to occur at location 1.

Answer:

• Question 5: a mid - ocean ridge
• Question 6: 1