Volcanism

Question 1

What is a restricted vent in the surface of the Earth through which grasses, hot rock fragments, and lava are ejected?

Answer 1

Volcanism

Question 2

What is a funnel-like depression found on top of active volcano?

Answer 2

Crater

Question 3

What are the types of volcanic eruptions?

Answer 3

1. Quiet or Effusive
2. Violent
3. Destructive

Question 4

What is a hot molten rock below the Earth’s surface?

Answer 4

Magma

Question 5

What is a reservoir of molten rock but when it comes to the surface it is called?

Answer 5

Lava

Question 6

What are the 3 ways that magma can be generated?

Answer 6

1. Temperature
2. Pressure
3. Structural Formations

Question 7

What is the increase in temperature within tur depths of the Earth?

Answer 7

Geothermal Gradient

Question 8

What is the main agent in producing violent eruptions?

Answer 8

Water

Question 9

Volcanism echoes the name ______ which means the Ancient Roman God of Fire and Volcanoes.

Answer 9

“Vulcan”

Question 10

What refers to “Pluto” which is the classical ruler of the underworld?

Answer 10

Plutonism

Question 11

What is a geologic theory that igneous rocks forming the Earth, originated from intrusive magmatic activity with a continuing gradual process of weathering and erosions?

Answer 11

Volcanism or Plutonism

Question 12

What are the 3 kinds of volcano?

Answer 12

1. Composite Volcano
2. Shield Volcano
3. Cinder Cone Volcano

Question 13

It is a volcano which is cone-shape.

Answer 13

Composite Volcano

Question 14

What volcano which are formed from pyroclastic materials from another volcano?

Answer 14

Composite Volcano

Question 15

What is the most violent among other volcanoes?

Answer 15

Composite Volcano

Question 16

Give an example of Composite Volcano.

Answer 16

Mt. Pinatubo

Question 17

It is a volcano which has a mound-like shape.

Answer 17

Shield Volcano

Question 18

What volcano is formed from basaltic lava that erupted from a volcano?

Answer 18

Shield Volcano

Question 19

Give an example of Shield Volcano.

Answer 19

The Mauna Loa in Hawaii

Question 20

It is a smaller cone-shaped volcano.

Answer 20

Cinder Cone Volcano

Question 21

What volcano is formed from rock fragments from another volcano?

Answer 21

Cinder Cone Volcano

Question 22

Guve an example of Cinder Cone Volcano.

Answer 22

Mt. Paricutin in Mexico

Question 23

From the 200 volcanoes in the Philippines, how many volcanoes are considered active?

Answer 23

23

Question 24

How can you tell if a volcano is active?

Answer 24

When it has erupted within historic times and is capable of erupting anytime.

Question 25

Give an example of active volcanoes?

Answer 25

Mt. Mayon, Mt. Taal, Mt. Kanlaon

Question 26

How can you tell if a volcano is inactive?

Answer 26

If it has not erupted within historic times and has no possibility of erupting.

Question 27

What volcanoes that are has not erupted within historic times but can possibly erupt anytime?

Answer 27

Dormat Volcano

Question 28

Give an example of Dormat Volcano.

Answer 28

Mt. Apo and Mt. Arayat

Question 29

Why do volcanoes erupt

Answer 29

• a volcano eruption happens when a part of the Earth’s crust sinks into the mantle.
• due to intensive heat, rock melts, and release gas causing the magma to rise in addition to extreme pressure building up surrounding the solid rocks.
• as heat and pressure becomes more intense, magma rises until it reaches the main vent and finally flow out of the crater.