« previous next »

Author Question: A student notes that a rock contains mica and plagioclase feldspar and concludes that the rock is an ... (Read 110 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?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Nursing Student Nursing Student
Metabolic Disorder notes Metabolic Disorder notes
Granite: a Common Rock in Continental Crust Granite: a Common Rock in Continental Crust
Discharge of Acid Rock Drainage Discharge of Acid Rock Drainage
Collage of Student Faces Collage of Student Faces
Rock Art: Boat And Sea Battle Rock Art: Boat And Sea Battle
Video: Mendel's Pea Experiment

For a complete list of videos, visit our video library