« previous next »

Author Question: What is one way that polymorph minerals, such as aluminum-silicates, change from one form to ... (Read 69 times)

kwoodring

  • Hero Member
  • *****
  • Posts: 560
on: Jul 16, 2018
What is one way that polymorph minerals, such as aluminum-silicates, change from one form to another?
 
  A) Temperature and pressure conditions change with depth, causing metamorphosis.
  B) They break up and change form during resedimentation.
  C) Other minerals join the polymorphs during contact with igneous intrusions.
  D) Fluid metamorphosis allows other elements to fit between the main mineral bonds.

Question 2

Why don't diamonds turn back to graphite once they reach Earth's surface?
 
  A) Diamonds are too hard to undergo reactions.
  B) Temperatures need to be lower than those found on Earth.
  C) There is not enough heat on the surface of the earth to drive the reverse reactions.
  D) Humans harvest diamonds before they can turn back to graphite.


tkempin

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: A

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?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

The Two New Strands Form in Different Ways The Two New Strands Form in Different Ways
Angioplasty. One form is called balloon angioplasty, shown here. A balloon catheter is threaded into Angioplasty. One form is called balloon angioplasty, shown here. A balloon catheter is threaded into
Small nuclear RNAs (snRNA), 100-200 bp in length, form part of the splicing mechanisms to process mR Small nuclear RNAs (snRNA), 100-200 bp in length, form part of the splicing mechanisms to process mR
Instructions for Completing the CMS-1500 (02/12) Claim Form Continued Instructions for Completing the CMS-1500 (02/12) Claim Form Continued
Hail is precipitation in the form of hard, rounded pellets of ice. Hail is precipitation in the form of hard, rounded pellets of ice.
Climate Change: Greenhouse gases Timescale Climate Change: Greenhouse gases Timescale
Video: Sister chromatids of a metaphase chromosome animation

For a complete list of videos, visit our video library