« previous next »

Author Question: Debate which energy sources effectively balance human needs with environmental concerns. What ... (Read 19 times)

Jramos095

  • Hero Member
  • *****
  • Posts: 528
on: Jul 14, 2018
Debate which energy sources effectively balance human needs with environmental concerns.
 
  What will be an ideal response?

Question 2

Consider a sample of porphyritic andesite, which is common in Pacific Rim volcanoes. Speculate how this sample may have formed (simply defining porphyritic isn't enough, be specific).
 
  What will be an ideal response?


mammy1697

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 14, 2018
Answer to Question 1

Answers might mention coal, nuclear, solar, hydro, natural gas.

Answer to Question 2

Answer: The formation of porphyritic igneous rocks typically involves a two-stage cooling process. Deep inside the volcano the minerals that form andesite begin to crystallize. As the volcano erupts, the liquid portion of the lava cools rapidly, inhibiting mineral growth and thus creating two crystal sizes within the groundmass. Hornblende is a typical phenocryst for andesite.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Human embryonic stem cells forming rosettes, a sign of neural differentiation Human embryonic stem cells forming rosettes, a sign of neural differentiation
human muscles position sitting yoga human muscles position sitting yoga
Free Energy Rules: The Second Law in Open Systems Free Energy Rules: The Second Law in Open Systems
Whole fruits and vegetables, whole grains, and legumes are the best food sources of fiber Whole fruits and vegetables, whole grains, and legumes are the best food sources of fiber
Acid–Base Balance Acid–Base Balance
Predicted polypeptide sequences translated from potential ORFs in the human TUBA3C gene Predicted polypeptide sequences translated from potential ORFs in the human TUBA3C gene
Video: Miller's reaction chamber experiment Animation

For a complete list of videos, visit our video library