« previous next »

Author Question: Plate A and Plate B both consist of only oceanic lithosphere. Plate A is subducting under Plate B. ... (Read 126 times)

ENagel

  • Hero Member
  • *****
  • Posts: 540
on: Jul 16, 2018
Plate A and Plate B both consist of only oceanic lithosphere. Plate A is subducting under Plate B.
 
  Why isn't Plate B subducting under Plate A? Explain you answer
  What will be an ideal response?

Question 2

Which plate contains older lithosphere, A or B? Explain how you know.
 
  What will be an ideal response?


courtney_bruh

  • Sr. Member
  • ****
  • Posts: 308
Reply #1 on: Jul 16, 2018
Answer to Question 1

Plate B doesn't subduct under Plate A because it is less dense than Plate A. Density initiates subduction and Plate A is denser than Plate B, so this is why Plate A subducts.

Answer to Question 2

Plate A is older, as it is more dense and subducting. As the plate ages, it cools, gets thicker and gets denser and starts to subduct.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Plate XLVII of Animalia Qvadrvpedia et Reptilia (Terra) by Joris Hoefnagel, circa 1575, showing a &q Plate XLVII of Animalia Qvadrvpedia et Reptilia (Terra) by Joris Hoefnagel, circa 1575, showing a &q
Orifice plate & Turbine Flowmeter Experiment Orifice plate & Turbine Flowmeter Experiment
A typical TP sensor mounted on the throttle plate of this port-injected engine. A typical TP sensor mounted on the throttle plate of this port-injected engine.
The throttle plate stayed where it was moved, which indicates that there is a problem with the ... The throttle plate stayed where it was moved, which indicates that there is a problem with the ...
Theory of Plate Tectonics Theory of Plate Tectonics
Distribution of Modern Day Oceanic Plateaus and Fragments Distribution of Modern Day Oceanic Plateaus and Fragments
Video: Glomerular filtrate rate: pressures that affect GFR, NFP & GFR and blood composition

For a complete list of videos, visit our video library