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

Author Question: What is the difference between primary and secondary volcanic hazards? What will be an ideal ... (Read 169 times)

panfilo

  • Hero Member
  • *****
  • Posts: 572
on: Jul 15, 2018
What is the difference between primary and secondary volcanic hazards? What will be an ideal response?

Question 2

What is VEI? 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

medine

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 15, 2018
Answer to Question 1

Primary volcanic hazards are those related directly to the exit of magma from an erupting vent and the
distribution of volcanic materials across the surrounding countryside. These include hazards related to
lava flows, volcanic gases, ash and pumice falls, and PDCs. Secondary hazards are not from direct
discharge of material from a vent, but are from later effects of eruptions. These include tsunami, lahars
(volcanic debris flows), long-term volcanic degassing, and severe weather conditions



Answer to Question 2

VEI stands for Volcanic Explosivity Index. It has values that range from 0 to 10 and is based on the
volume of material ejected, the height that the material rises, whether volcanic gases and ash penetrate
the stratosphere and how long the eruption lasts.



panfilo

  • Hero Member
  • *****
  • Posts: 572
Reply #2 on: Jul 15, 2018
Correct answers!


medine

  • Sr. Member
  • ****
  • Posts: 344
Reply #3 on: Jul 15, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

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?

On average, the stomach produces 2 L of hydrochloric acid per day.

Prostate cancer. In this example, a large mass has grown into the urinary bladder. Prostate cancer i Prostate cancer. In this example, a large mass has grown into the urinary bladder. Prostate cancer i
Preventive and Primary Care Services Preventive and Primary Care Services
Schools are a primary agent of socialization. One of their functions is to teach children the ... Schools are a primary agent of socialization. One of their functions is to teach children the ...
Graphs of Primary Trigonometric Ratios Graphs of Primary Trigonometric Ratios
Primary and secondary immune responses Primary and secondary immune responses
Secondary growth Secondary growth
Video: Embryonic development - Week 3

For a complete list of videos, visit our video library