« previous next »

Author Question: Which of the following is not a method of obtaining samples and observations of the oceanic ridge ... (Read 37 times)

natalie2426

  • Hero Member
  • *****
  • Posts: 524
on: Jul 16, 2018
Which of the following is not a method of obtaining samples and observations of the oceanic ridge system?
 
  A) Finding segments of ocean floor that have been thrust up onto the continent
  B) Visual inspections using submersible equipment
  C) Deep sea core samples
  D) Side-scan sonar

Question 2

Why do mantle plumes tend to concentrate beneath supercontinents such as Pangaea?
 
  A) Concentrations of radioactive materials build up as continents assemble.
  B) Partial melting from subduction concentrates large volumes of magma.
  C) A large landmass acts as an insulating blanket to trap heat in the mantle.
  D) Friction from converging landmasses heats up the mantle.


covalentbond

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Palade's use of the pulse-chase method to study protein secretion Palade's use of the pulse-chase method to study protein secretion
Free Samples Free Samples
Oceanic-Continental Convergence Oceanic-Continental Convergence
The phenotypic and genotypic ratios of a dihybrid cross can be derived using a branched-line method The phenotypic and genotypic ratios of a dihybrid cross can be derived using a branched-line method
Generation of the F2 trihybrid phenotypic ratio using the forked-line method Generation of the F2 trihybrid phenotypic ratio using the forked-line method
Method for creating Roundup-Ready soybeans Method for creating Roundup-Ready soybeans
Video: Congenital Heart Defects Animation

For a complete list of videos, visit our video library