W1

Question 1

The solid rocks blown from the vent are called

Answer 1

pyroclastic debris

Question 2

It is believed to be responsible for the existence of islands in Japan million years ago.

Answer 2

Subduction

Question 2

It is believed to be responsible for the existence of islands in Japan million years ago.

Answer 2

Subduction

Question 3

It is dependent on the plates which form the top layer of the mantle.

Answer 3

Subduction

Question 4

It is caused by a hot spot near the Earth’s outer core.

Answer 4

Distension

Question 5

It is a region of high volcanic activity not located at any plate boundary.

Answer 5

hotspot

Question 6

It is contained inside a chamber located inside a mantle.

Answer 6

Magma

Question 7

It is characterized by numerous and threatening eruptions due to a very active geological process inside a mantle.

Answer 7

Young volcano

Question 8

What is the most active volcano in the world? It is also Hawaii’s youngest volcano.

Answer 8

Kilauea

Question 8

A volcano is said to be ____ if it is currently erupting or show signs of unrest activities such as significant amount of gas emission or frequent seismic activities.

Answer 8

Active

Question 9

It is characterized by the emission of acid gases and vapors.

Answer 9

fumarolic stage

Question 10

It is ____ if the last traces of volcanic heat disappear and if it has not erupted in 2,000 years.

Answer 10

Inactive or dormant

Question 11

When volcanoes exceeeded a period of dormancy of at least 10,000 years and are not expected to erupt , they are classified as _______.

Answer 11

Extinct volcanoes

Question 12

It is the simplest type of volcano in the world

Answer 12

Cinder Cones

Question 13

Cinder Cones are also called

Answer 13

scoria cone

Question 14

It is a steep conical hill formed above the a vent that is composed mostly of basalt.

Answer 14

Cinder Cones

Question 15

Composite volcano is also called

Answer 15

Stratovolcano

Question 16

It is one constructed of alternating layers of pyroclastic materials and solidified lava flows.

Answer 16

Composite volcano

Question 17

Its conduit system contains a central or clustered group of vents.

Answer 17

Composite Volcano

Question 18

What is the highest peak in the Western Hemisphere?

Answer 18

Aconcagua

Question 19

It is a broad, gently sloping landform that is built by many layers of low-viscous lava flows which cannot be filed up into steep mounds.

Answer 19

Shield volcano

Question 20

Eruptins of this type are relatively non-violent which can be attributed to the fluidity of the basalt lava ejected from the vent.

Answer 20

Shield Volcano

Question 21

Whta is the largest shield volcano and also one of the world’s most active volcanoes?

Answer 21

Mauna Loa

Question 22

Volcanic Dome is also called

Answer 22

Lava dome

Question 23

It is a **round**, steep-sided mound that is formed by small, bulging masses of lava primarily composed of either **dacite or rhyolite**.

Answer 23

Volcanic Dome

Question 24

It is described to produce the largest eruptions on Earth.

Answer 24

Supervolcano

Question 25

It implies a volcanic center that has recorded an eruption with a **magnitude of 8** on the Volcano Explosivity Index

Answer 25

Supervolcano

Question 26

Who created VEI scale

Answer 26

Christopher G. Newhall of the United States Geological Survey, and Stephen Self at the University of Hawaii.

Question 27

Geologist **compare** the bulk density of the distributed tephra with the bulk density of the rock that composes tephra. This result is called the

Answer 27

dense rock equivalent/ DRE

Question 28

This type of volcano is created when magma erupts in the underwater fissures of the Earth.

Answer 28

Submarine Volcanoes

Question 29

Submarine Volcanoes in shallow water can eject basaltic magma and the lava is formed is known as

Answer 29

pillow lava

Question 30

Subglacial volcano is also called

Answer 30

Glaciovolcano

Question 31

It is created by **eruptions beneath the surface of a glacier or sheets** which is then melted into a lake by the rising lava that resembles to the pillow lava formed by submarine volcanoes.

Answer 31

Subglacial Volcanoes

Question 32

Subglacial eruptions often cause?

Answer 32

jokulhlaups or great floods of water

Question 33

-non-explosive eruptions, fluid basaltic lava, **gentle broad slopes**.

Answer 33

Shield Volcanoes

Question 34

-over multiple eruptions, long, fluid lava flows from **broad** layers, which accumulate into some of the world’s largest volcanoes.

Answer 34

Shield Volcanoes

Question 35

explosive eruptions, small but steep slopes, pyroclastics.

Answer 35

Cinder Cones

Question 36

Forms when explosive activity throws magma into the air which cools into cinders and settles around the volcano’s opening.

Answer 36

Cinder Cones

Question 37

These emerge in just a few years during one active period; afterward, they are usually extinct, but they may occur on the side of a larger volcano.

Answer 37

Cinder Cones

Question 38

Alternating between lava and pyroclastics, explosive and non-explosive eruptions, **steep and tall.**

Answer 38

Composite Volcano

Question 39

Over multiple eruptions, the accumulation of both explosive activity and lava flows form the **steep**, sweeping sides of this volcano.

Answer 39

Composite Volcano

Question 40

As it ages, multiple channels to the surface can splinter off of the central vent, influencing its shape

Answer 40

Composite Volcano