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 76 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?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

The locations of genetic material in animal and plant cells. The locations of genetic material in animal and plant cells.
Bartel and Szostak demonstrated chemical selection for RNA molecules that can catalyze phosphoester Bartel and Szostak demonstrated chemical selection for RNA molecules that can catalyze phosphoester
An example of a urine chemical analyzer. An example of a urine chemical analyzer.
The tools necessary to adjust the valves on an engine with adjustable rocker arms include basic hand ... The tools necessary to adjust the valves on an engine with adjustable rocker arms include basic hand ...
Locations of key energy meridians and acupoints for the back, shoulder, arm, neck, head, and face. Locations of key energy meridians and acupoints for the back, shoulder, arm, neck, head, and face.
The U.S. military uses its own marking system to identify explosive hazards (left), chemical hazards ... The U.S. military uses its own marking system to identify explosive hazards (left), chemical hazards ...
Video: Simple Diffusion - gases and nonpolar compounds transport

For a complete list of videos, visit our video library