« previous next »

Author Question: Why would decompression of the mantle cause the production of mafic magma? A) Mafic magma is ... (Read 114 times)

nramada

  • Hero Member
  • *****
  • Posts: 580
on: Jul 16, 2018
Why would decompression of the mantle cause the production of mafic magma?
 
  A) Mafic magma is produced at high pressures.
  B) With less pressure comes higher melting points.
  C) Mafic magma is produced at low pressure.
  D) With less pressure comes lower melting points.

Question 2

Volcanoes are present at convergent plate boundaries because
 
  A) the plates rub together, causing friction and heat.
  B) water is carried down with the subducting plate and causes the mantle to melt.
  C) heat from the inner mantle travels up along the subducting plate.
  D) decompression melting due to decreased pressure at the boundary causes the mantle to melt and rise into volcano formations.


nixon_s

  • Sr. Member
  • ****
  • Posts: 359
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

The Stripping of Mercury’s Mantle The Stripping of Mercury’s Mantle
Microlith production. Microlith production.
Prolonged abuse leads to production of stress hormones that can lead to a cascade of effects ... Prolonged abuse leads to production of stress hormones that can lead to a cascade of effects ...
Block Diagram of a Dual-stage Pressure System for Dual-Stage Pressure Production of Nitric Acid Seme Block Diagram of a Dual-stage Pressure System for Dual-Stage Pressure Production of Nitric Acid Seme
Fossil fuels production Fossil fuels production
ATP Production in Cardiac Muscle ATP Production in Cardiac Muscle
Video: Causes of Angina

For a complete list of videos, visit our video library