This topic contains a solution. Click here to go to the answer

Author Question: Which explanation best describes how oceanic crust is formed? A) Continental crust is swallowed ... (Read 112 times)

abc

  • Hero Member
  • *****
  • Posts: 543
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
Answer to Question 1

Answer: B

Answer to Question 2

Answer: C




abc

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


nathang24

  • Member
  • Posts: 314
Reply 3 on: Yesterday
Excellent

 

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

For a complete list of videos, visit our video library