classifications of volcanoes

Question 1

formed when fluid or non viscous lava exists in the volcano, quickly spreads out
from the vent, and hardens on a wide surface area.

Answer 1

shield volcano

Question 2

erupts non-viscous lava and mostly gives non-violent eruptions

Answer 2

shield volcano

Question 3

a short, conical volcano with steep slopes

Answer 3

cinder volcano

Question 4

its form resembles a warrior’s shield

Answer 4

shield volcano

Question 5

have a large stature, broad summit, and gently sloping sides.

Answer 5

shield volcano

Question 6

is a cone-shaped volcano mostly made up of
ejected fragments of hardened viscous lava that are called cinders.

Answer 6

cinder volcano

Question 7

majorly erupts cinders or scoria using mild to moderate explosive eruption

Answer 7

cinder volcano

Question 8

formed when cinders erupt from the volcano and heavier cinders pile up at the
vent and lighter cinders spread farther from the vent (and nearer to the base). It
erupts lava but cinders are not competent enough to allow lava to exit the main
vent. Thus, the lava leaks at the base of the volcano instead of over the cinders or
scoria. This is also why they remain short.

Answer 8

cinder volcano

Question 9

a tall, steep conical volcano made of layers of tephra, ash, and viscous lava.

Answer 9

Composite Volcano/Stratovolcano

Question 10

called a stratovolcano because it is derived from the Latin word “strata” which is
the plural word for “stratum”. Strata means ?

Answer 10

layers

Question 11

has an explosive type of eruption to eject heavier materials like tephra and viscous
lava

Answer 11

Composite Volcano/Stratovolcano

Question 12

a steam-driveneuption as the hot rocks come in contact with water.

Answer 12

Phreatic or Hydrothermal

Question 13

originates from the Greek phrear,meaning “well” or “spring”

Answer 13

Phreatic or Hydrothermal

Question 14

Eruption happens when groundwater or surface water gets heated up straight into
steam by rocks heated by magma.

Answer 14

Phreatic or Hydrothermal

Question 15

is a violent eruption due to the contact between water and magma

Answer 15

Phreatomagmatic eruption

Question 16

Eruption Results of a large column of very fine ash and high-speed and sideway
emission of pyroclastics called base surges are observed.

Answer 16

Phreatomagmatic eruption

Question 17

periodic weak to violent eruption characterized by fountain lava

Answer 17

Strombolian eruption

Question 18

This type of eruption forms cinder cone volcano

Answer 18

Strombolian eruption

Question 19

characterized by tall eruption columns that reach up to 20 km high with
pyroclastic flow and ashfall tephra.

Answer 19

Vulcanian eruption

Question 20

This type of eruption forms composite/stratovolcano

Answer 20

Vulcanian eruption

Question 21

excessively explosive type of eruption of gas and pyroclastics

Answer 21

Plinian eruption

Question 22

strongest eruption showing the biggest, and highest ash cloud with lots of
different-sized rocks

Answer 22

Plinian eruption

Question 23

explosive eruption that creates umbrella-shaped ash columns that can reach the
stratosphere

Answer 23

Plinian eruption

Question 24

characterized by fluid lava only with non-violent eruptions

Answer 24

Hawaiian eruption

Question 25

does not create any substantial ash column like the strombolian, vulcanian, and
plinian

Answer 25

Hawaiian eruption

Question 26

This type of eruption forms shield volcano

Answer 26

Hawaiian eruption