« previous next »

Author Question: What is one way that polymorph minerals, such as aluminum-silicates, change from one form to ... (Read 88 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?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Hydrogen Bonds Can Form Between or Within Molecules Hydrogen Bonds Can Form Between or Within Molecules
Embryonic cells form the placenta Embryonic cells form the placenta
Vitamins and Minerals Vitamins and Minerals
Ice cores as indicators of environmental change Ice cores as indicators of environmental change
Climate change is an important vector for human diseases Climate change is an important vector for human diseases
Humulin, a recombinant form of human insulin Humulin, a recombinant form of human insulin
Video: Introduction to Pre-eclampsia

For a complete list of videos, visit our video library