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

Author Question: Compare and contrast explosive and effusive eruptions. Include their locations, the chemical ... (Read 77 times)

NguyenJ

  • Hero Member
  • *****
  • Posts: 516
on: Jul 14, 2018
Compare and contrast explosive and effusive eruptions. Include their locations, the chemical composition of the magma, and the landforms they typically produce.
 
  What will be an ideal response?

Question 2

Discuss the process and causes of folding, and distinguish between anticline and syncline.
 
  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

cam1229

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 14, 2018
Answer to Question 1

Effusive eruptions are outpourings of low-viscosity magma that produces enormous volumes of lava. The basaltic rock is low in silica (less than 50) and rich in iron and magnesium. Effusive eruptions pour out on the surface with relatively small explosions and few pyroclastics. Effusive eruptions may come from a single vent or from a flank of a volcano through a side vent or even fissures.
Explosive eruptions are violent explosions of magma, gas, and pyroclastics driven by pressure build-up in a magma conduit. The magma is thicker and more viscous than effusive magma.

Answer to Question 2

When rock strata that are layered horizontally are subjected to compressional forces, they become deformed. Folding occurs when rocks are deformed as a result of compressional stress and shortening. An arch-shaped upward fols is an anticline. A trough-shaped downward fold is a syncline.


NguyenJ

  • Hero Member
  • *****
  • Posts: 516
Reply #2 on: Jul 14, 2018
Thank you :)


cam1229

  • Sr. Member
  • ****
  • Posts: 329
Reply #3 on: Jul 14, 2018
Happy to help you


« previous next »
 

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Deamination and mispairing of modified bases by a chemical mutagen. Deamination and mispairing of modified bases by a chemical mutagen.
Compare the Final Code with the Documentation Compare the Final Code with the Documentation
Pathogenic microorganisms include (A) bacteria, (B) viruses, (C) protozoa, and (D) helminths. Pathogenic microorganisms include (A) bacteria, (B) viruses, (C) protozoa, and (D) helminths.
Midsagittal section indicating locations of true and false pelves Midsagittal section indicating locations of true and false pelves
How reciprocal functions compare to the parent function How reciprocal functions compare to the parent function
As a nerve impulse arrives at the synapse, it triggers the release of a chemical neurotransmitter fr As a nerve impulse arrives at the synapse, it triggers the release of a chemical neurotransmitter fr
Video: Secondary Active Transport

For a complete list of videos, visit our video library