8th Grade Seafloor Spreading Quizzes , Questions & Answers

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Mid Ocean Ridge Quiz: Earth\'s Longest Mountain Range

This assessment explores the Mid Ocean Ridge, Earth's longest mountain range, focusing on its formation, geological significance, and role in plate tectonics. It evaluates knowledge of oceanic processes and the impact of these...

Questions: 15 | Attempts: 12 | Last updated: Mar 20, 2026

Sample Question 1
What is the mid-ocean ridge?

A deep trench where oceanic plates sink into the mantle

A long underwater mountain range formed where tectonic plates pull apart

A flat region of the ocean floor covered in sediment

A volcanic island chain formed above a hotspot

Sample Question 2
The mid-ocean ridge is found only in the Atlantic Ocean.

True

False

Sample Question 3
What process occurs at the center of the mid-ocean ridge that builds new ocean floor?

Subduction of oceanic crust

Erosion of underwater sediment layers

Seafloor spreading through volcanic activity

Folding of continental rock under pressure

8th Grade Seafloor Spreading Quizzes , Questions & Answers

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