Chapter 5

Question 1

Definition of volcanoes

Answer 1

A fissure in the ground through which lava erupts and the events that accompany the eruption

Question 2

What can Volcanoes also be?

Answer 2

Volcanoes can also be cinder cones formed by erupted lava

Question 3

Why do we need to measure all geologic events?

Answer 3

So we can pass on these measurements for analysis to help identify/determine new or previous geologic events

Question 4

What are volcanoes associated with?Name two crazy eruptions?

Answer 4

Volcanoes are associated with danger
Mt. Versuvius in 79 AD- In Italty
This eruption buried two cities
-Pompeii(killied 3,000 people and buried them in volcanic ash)
-Herculaneum
Mud Flower covered town(mud flow came from water and ash being mixed)(this killed 30 people)

Question 5

Volcanoes are predictable or unpredictable

Answer 5

unpredictable

Question 6

Gasses from volcanoes are

Answer 6

dangerous to humans and plants

Question 7

Fatality from volcanoes vary according to

Answer 7

the strength of the volcano

Question 8

Volcanoes are beatiful and be be used for

Answer 8

skiing, hiking etc

Question 9

The soil around volcanoes are what for plants

Answer 9

are very good and productive for plants

Question 10

When digging for bodies in pompeii they discovered what?

Answer 10

Discovered the science of archeology

Question 11

Volcanoes form what materials?

Answer 11

blocks, concrete and stone

Question 12

Colling of magna around volcanoes around water has

Answer 12

been converted to steam to produce electricy in countries like(Italy , Iceland)

Question 13

Look at photo of wizard isalnd in notes

Answer 13

lalalal good luck on test

Question 14

Where are Volcanos usually found

Answer 14

They are found along plates boundaires and where most of earths most dangerous events occur

Question 15

The most expolsive volcanoes are found around what types of boundaires?

Answer 15

convergent boundaries(where plates subdect)

Question 16

At divergent boundaires how are volcanoes?

Answer 16

They are mild and productive

Question 17

Where do more volcanos occur? Northern or Southern Heimshphre

Answer 17

Northern Hemisphere

Question 18

Measures for Volcanics are based on what?

Answer 18

Scales are based on criteria for description of eruption explosivity

Question 19

What is the main volcanic exlositivy called?

Answer 19

Its called volcanic explosivity Index

Question 20

What are some columns on the index and describe them?

Answer 20

General Description(how explosive it was using general words like large,small)
Cloud Column Height(how high the cloud went up)
Qualitative Description(none general words to describe the explosion)
Classification(classifying the volcanic based on those descriptions)

Question 21

Types of Volcanos

Answer 21

The type of volcanic is based on the shape of the cone.
-It can either be quiet or explosive
-The cone can give you a idea on how dangerous the volcano will be

Question 22

Quiet Eruptions(Describe the one.)

Answer 22

Shield Cone: Convex upward shield
-Produced from gentle pouring
-They have fissure eruptions which are eruptions of lava from long cracks
(Look at the picture in the notes)

Question 23

Explosive Eruptions (Name all three and desribe)

Answer 23

Composite Cone: Concave upward body of lava
-Very tall
Lava Done: Bulb-like masses like high silica, glassy lava

Cinder Cones: Small and numerous cones
(Look at the picture in notes)

Question 24

Prediction and Migitiaion of Volcanoes(Prediction Part)

Answer 24

Poeple try to predict volcanos to have people execute and prepare before hand
-They have been using studis of seismic activity to predict them

Question 25

Prediction and Migitiaion of Volcanoes(Migation Part)

Answer 25

Mitigation measures for volcanic eruptions usually involve implementation of control structures to reduce the effects of flooding; land zoning and evacuation; and building reinforcement.