This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A scientist identifies a rock sample as rhyolite. Why did he do so? A) He observed that the rock ... (Read 109 times)

jrubin

  • Hero Member
  • *****
  • Posts: 552
on: Jul 16, 2018
A scientist identifies a rock sample as rhyolite. Why did he do so?
 
  A) He observed that the rock has a lot of silica, making it mafic.
  B) He observed that the rock has a lot of silica, making it ultra-mafic.
  C) He observed that the sample has little silica, making it felsic.
  D) he observed that the sample has a lot of silica, making it felsic.

Question 2

A scientist identifies a rock sample as andesite. Why did he do so?
 
  A) He observed that the rock has a lot of silica, making it mafic.
  B) He observed that the rock has a lot of silica, making it ultra-mafic.
  C) He observed that the rock has a decent amount of silica, making it intermediate.
  D) He observed that the sample has little silica, making it felsic.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Brummell1998

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: C


jrubin

  • Member
  • Posts: 552
Reply 2 on: Jul 16, 2018
Gracias!

AISCAMPING

  • Member
  • Posts: 347
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

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.

A sample prescription written by a physician. A sample prescription written by a physician.
Sample Exercise Program for Limited Older Adults (cont.) Sample Exercise Program for Limited Older Adults (cont.)
Sample prescriptions of drugs for oral herpes infection. Sample prescriptions of drugs for oral herpes infection.
Rock cores as indicators of environmental change Rock cores as indicators of environmental change
(left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur (left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur
Plaque morphology phenotypes observed following simultaneous infection Plaque morphology phenotypes observed following simultaneous infection
Video: Major Elements in Biological Molecules: Lipids

For a complete list of videos, visit our video library