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 89 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
Thanks for the timely response, appreciate it

Hdosisshsbshs

  • Member
  • Posts: 315
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Formed elements of blood: erythrocytes, leukocytes (neutrophils, eosinophils, basophils, lymphocytes Formed elements of blood: erythrocytes, leukocytes (neutrophils, eosinophils, basophils, lymphocytes
Basin and Range Province—Crust Extended Basin and Range Province—Crust Extended
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 ...
Explanation of endocrine versus exocrine. Explanation of endocrine versus exocrine.
Wheals are formed in reaction to scratch testing and intradermal testing of allergens. Wheals are formed in reaction to scratch testing and intradermal testing of allergens.
Creating a Continental Economy Creating a Continental Economy
Video: Inflammation and Fever

For a complete list of videos, visit our video library