Author Question: Why would decompression of the mantle cause the production of mafic magma? A) Mafic magma is ... (Read 92 times)

nramada

  • Hero Member
  • *****
  • Posts: 580
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
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
 

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

For a complete list of videos, visit our video library