This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which explanation best describes how oceanic crust is formed? A) Continental crust is swallowed ... (Read 109 times)

abc

  • Hero Member
  • *****
  • Posts: 543
on: Jul 16, 2018
Which explanation best describes how oceanic crust is formed?
 
  A) Continental crust is swallowed by the sea at subduction zones.
  B) Oceanic crust is extracted from the mantle by partial melting and crystallization.
  C) Oceanic crust crystallizes in the core and is pushed up through volcanic pipes.
  D) Oceanic crust formed when magma ocean cooled and has remained unchanged except around plate boundaries and at hot spots.

Question 2

The oceanic crust has an average age of ________ and a maximum age of ________.
 
  A) 200 million; 400 million
  B) 80 million; 200 million
  C) 100 million; 180 million
  D) 90 million; 300 million


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ergserg

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: C


abc

  • Member
  • Posts: 543
Reply 2 on: Jul 16, 2018
Gracias!

smrtceo

  • Member
  • Posts: 344
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The FDA recognizes 118 routes of administration.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

There are more bacteria in your mouth than there are people in the world.

Oceanic circulation, which is driven mainly by the prevailing winds, moderates earth's climate. Oceanic circulation, which is driven mainly by the prevailing winds, moderates earth's climate.
A Passive Continental Margin A Passive Continental Margin
The rapid collapse of the South Vietnamese army in 1975 caught many by surprise. Evacuees formed a ... The rapid collapse of the South Vietnamese army in 1975 caught many by surprise. Evacuees formed a ...
Common skin signs are often evidence of an illness or disorder. A crust is a dry, serous or ... Common skin signs are often evidence of an illness or disorder. A crust is a dry, serous or ...
Creating a Continental Economy Creating a Continental Economy
Distribution of Modern Day Oceanic Plateaus and Fragments Distribution of Modern Day Oceanic Plateaus and Fragments
Video: Febrile Seizure

For a complete list of videos, visit our video library