« previous next »

Author Question: A student notes that a rock contains mica and plagioclase feldspar and concludes that the rock is an ... (Read 130 times)

Brittanyd9008

  • Hero Member
  • *****
  • Posts: 500
on: Jul 16, 2018
A student notes that a rock contains mica and plagioclase feldspar and concludes that the rock is an intermediate rock. What piece of further information could best determine if the student's conclusion was the correct one?
 
  A) the grain size of the crystals
  B) the color of the rock
  C) the amphibole content of the rock
  D) the silicate content of the rock

Question 2

What process forms rocks with porphyritic texture?
 
  A) quick cooling above ground
  B) slow cooling below ground
  C) a mixture of quick and slow cooling as rock moves from a warmer environment to a cooler one
  D) slow cooling combined with pressure underground


olderstudent

  • Sr. Member
  • ****
  • Posts: 339
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?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

An example of layers, or strata, of sedimentary rock that contain fossils An example of layers, or strata, of sedimentary rock that contain fossils
Pacific hagfish trying to hide under a rock Pacific hagfish trying to hide under a rock
Feral Rock Pigeons are common pests in public spaces in cities Feral Rock Pigeons are common pests in public spaces in cities
Metabolic Disorder notes Metabolic Disorder notes
Pelvic rock. Place your right hand over the recipient’s left hip bone. Place your left hand over ... Pelvic rock. Place your right hand over the recipient’s left hip bone. Place your left hand over ...
Student Perspective of Research Student Perspective of Research
Video: ribosome

For a complete list of videos, visit our video library