Volcanos

Question 1

Name 3 places you would find volcanic activity

Answer 1

Hotspots, plate boundary’s, subduction

Question 2

What are the 3 stages of volcanos

Answer 2

Active, Dormant, Extinct

Question 3

Give and example of an active volcano

Answer 3

Mount Etna

Question 4

Give an example for a dormant volcano

Answer 4

Mount Vesuvius

Question 5

Give an example for an extinct volcano

Answer 5

Slemish Co. Antrim

Question 6

What are the 2 types of volcanic features

Answer 6

Intrusive and Extrustive

Question 7

Give 3 features for an intrusive volcano

Answer 7

Batholiths, sills and Dykes

Question 8

Give 2 features for an extrusive volcano

Answer 8

Lava plateaus and Volcanic cones

Question 9

Give a location and 3 facts for a Batholith

Answer 9

Lensiter, Largest in UK and Ireland, Happened around 400 mya and intense heat formed quartz and schist

Question 10

Give a location and 3 facts for a Platue

Answer 10

Derry, 4000sq.kms, Lasted for 2 million years and giants causeway created

Question 11

What are the 3 types of volcano vents

Answer 11

Constructive, destructive and Hotspots

Question 12

Give locations of the 3 vent volcanos

Answer 12

C- Mt. Hekla Iceland, D-Mt. Fiji Japan H-Mauna loa Hawaii

Question 13

Give 2 volcanic gasses

Answer 13

Steam and carbon dioxide

Question 13

What are the 3 types of eruptions

Answer 13

Central, Fissures and fissure

Question 14

What are the 2 types of lava

Answer 14

Acidic and Basic

Question 15

Give 2 types of volcanic rocks

Answer 15

Ash and Lava Bombs

Question 16

What is pyroclastic flow

Answer 16

Ash and gas moves rapidly downhill

Question 17

What are Calderas

Answer 17

Basin depressions that release steam and no lava

Question 18

What are Fumaroles

Answer 18

Secondary vents that only emit gas

Question 19

How are Hotspots formed

Answer 19

Pacific drift moves the hotspot away from the magma point

Question 20

Give 4 Benefits of volcanoes

Answer 20

Minerals, soils, energy and tourism

Question 21

Give a location where geothermal energy is used

Answer 21

Iceland

Question 22

What volcano in studied area heats water using geothermal energy

Answer 22

Hengill

Question 23

What percentage of homes are heated from geothermal energy in iceland

Answer 23

90%

Question 24

How can Humans predict volcanic explosions (3 ways)

Answer 24

Change in shape (bulge or Bubble), Level of heat may increase, lahars

Question 25

What 5 instruments are used to monitor volcanic activity

Answer 25

Seismometers, tiltmeters, satellite images, infrared images, chemical sensors

Question 26

What index is used to measure volcanic explosivity

Answer 26

Volcanic Explosivity Index (VEI) 0-8