« previous next »

Author Question: Which of the following is not a method of obtaining samples and observations of the oceanic ridge ... (Read 73 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?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

The Steps of the Scientific Method The Steps of the Scientific Method
Performing Venipuncture Using the Vacutainer Method Performing Venipuncture Using the Vacutainer Method
How to solve a pair of linear equations using the Addition-Subtraction Method How to solve a pair of linear equations using the Addition-Subtraction Method
Alternative method of testing cardinal field of gaze Alternative method of testing cardinal field of gaze
A sample of 400 observations will be taken from an infinite population. The population ... A sample of 400 observations will be taken from an infinite population. The population ...
Offset Method Plot of Land with Length Line Offset Method Plot of Land with Length Line
Video: Autonomic Nervous System Animation

For a complete list of videos, visit our video library