Question

1. which of the following does not provide evidence of seafloor spreading?

pattern of ages of oceanic rock
magnetic stripes in oceanic rock
eruptions of molten material
subduction zones at the mid - ocean ridges

Explanation:

• The age pattern of oceanic rock (youngest at ridges, older farther away) supports seafloor spreading.
• Magnetic stripes in oceanic rock mirror Earth's magnetic reversals, proving new crust forms at ridges.
• Molten material eruptions at mid-ocean ridges are the source of new oceanic crust, direct evidence for spreading.
• Subduction zones occur at deep-ocean trenches, not mid-ocean ridges; they are where old crust is destroyed, not evidence of seafloor spreading itself.

Answer:

D. subduction zones at the mid-ocean ridges