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

Author Question: What does molten rock solidify into? a. basalt b. marble c. sandstone d. quartzite e. ... (Read 45 times)

dejastew

  • Hero Member
  • *****
  • Posts: 562
on: Jul 27, 2018
What does molten rock solidify into?
 
  a. basalt
 b. marble
 c. sandstone
  d. quartzite
 e. travertine

Question 2

What are forbidden lines? Briefly describe how they form.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

leeeep

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jul 27, 2018
Answer to Question 1

a

Answer to Question 2

Forbidden lines are certain lines in the spectra of emission nebulae that are never seen in the spectra of excided gas. When excited gas jumps between certain energy levels, it happens very quicklyin the order of 10-8 to 10-7 seconds. On rare occurrences, electrons get stuck in one of these metastable levels before it falls to a lower level and emits a photon of the corresponding energy. Unless the gas has extremely low density, collisions between atoms will disturb electrons caught in metastable levels long before they can make a transition downward and emit a photon producing forbidden lines.


dejastew

  • Member
  • Posts: 562
Reply 2 on: Jul 27, 2018
Wow, this really help

mcabuhat

  • Member
  • Posts: 344
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

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?

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

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

An example of layers, or strata, of sedimentary rock that contain fossils An example of layers, or strata, of sedimentary rock that contain fossils
Mare Basalt Mare Basalt
Fossils are formed after an animal dies, decomposes, and is covered in sediment. Minerals in ground Fossils are formed after an animal dies, decomposes, and is covered in sediment. Minerals in ground
Remediating Acid Rock Drainage Remediating Acid Rock Drainage
Success, You Rock, Achievement Success, You Rock, Achievement
Rock the leg to create movement at the hip joint. Apply passive movements to mobilize knee and hip ... Rock the leg to create movement at the hip joint. Apply passive movements to mobilize knee and hip ...
Video: Dietary Cholesterol & LDL

For a complete list of videos, visit our video library