More on ocean crust and density: at location "2" on both sides of the East Pacific Rise the crust is older and colder than the new crust at "1". The colder crust at "2" is more dense, so it sinks into the soft asthenosphere. This sinking crust at "2" pulls the new crust at "1" downhill along with it (similar to an avalanche!). This downhill force is one reason Earth's tectonic plates move; gravity helps drive plate tectonics! There are two gravity- caused forces that help move a tectonic plate: ridge push and slab pull Question: based on where it is happening, is crust at "2" pulling "1" downhill ridge push or slab pull? continent island arc SUBDUCTION ZONE marginal basin mid-ocean ridge trench 2 accretionary wedge sediments 3 ASTHENOSPHERE MESOSPHERE
More on ocean crust and density: at location "2" on both sides of the East Pacific Rise the crust is older and colder than the new crust at "1". The colder crust at "2" is more dense, so it sinks into the soft asthenosphere. This sinking crust at "2" pulls the new crust at "1" downhill along with it (similar to an avalanche!). This downhill force is one reason Earth's tectonic plates move; gravity helps drive plate tectonics! There are two gravity- caused forces that help move a tectonic plate: ridge push and slab pull Question: based on where it is happening, is crust at "2" pulling "1" downhill ridge push or slab pull? continent island arc SUBDUCTION ZONE marginal basin mid-ocean ridge trench 2 accretionary wedge sediments 3 ASTHENOSPHERE MESOSPHERE
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
Related questions
Question
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps
Recommended textbooks for you
Applications and Investigations in Earth Science …
Earth Science
ISBN:
9780134746241
Author:
Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:
PEARSON
Exercises for Weather & Climate (9th Edition)
Earth Science
ISBN:
9780134041360
Author:
Greg Carbone
Publisher:
PEARSON
Environmental Science
Earth Science
ISBN:
9781260153125
Author:
William P Cunningham Prof., Mary Ann Cunningham Professor
Publisher:
McGraw-Hill Education
Applications and Investigations in Earth Science …
Earth Science
ISBN:
9780134746241
Author:
Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:
PEARSON
Exercises for Weather & Climate (9th Edition)
Earth Science
ISBN:
9780134041360
Author:
Greg Carbone
Publisher:
PEARSON
Environmental Science
Earth Science
ISBN:
9781260153125
Author:
William P Cunningham Prof., Mary Ann Cunningham Professor
Publisher:
McGraw-Hill Education
Earth Science (15th Edition)
Earth Science
ISBN:
9780134543536
Author:
Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:
PEARSON
Environmental Science (MindTap Course List)
Earth Science
ISBN:
9781337569613
Author:
G. Tyler Miller, Scott Spoolman
Publisher:
Cengage Learning
Physical Geology
Earth Science
ISBN:
9781259916823
Author:
Plummer, Charles C., CARLSON, Diane H., Hammersley, Lisa
Publisher:
Mcgraw-hill Education,