« previous next »

Author Question: A student notes that a rock contains mica and plagioclase feldspar and concludes that the rock is an ... (Read 90 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?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Rock Climbing Catfish Rock Climbing Catfish
Metabolic Disorder notes Metabolic Disorder notes
Granite: a Common Rock in Continental Crust Granite: a Common Rock in Continental Crust
Tummy rock to release energy blocks in the torso and head. Tummy rock to release energy blocks in the torso and head.
RAINBOW SERPENT ROCK RAINBOW SERPENT ROCK
Floating rock illusion Floating rock illusion
Video: Stress and Immune System Animation

For a complete list of videos, visit our video library