Volcanoes

Question 1

Volcano that is famous for its near perfect cone shape

Answer 1

Mount Mayon

Question 2

Vent, hill, or mountain that erupts, releasing molten rocks, rock fragments, and gases.

Answer 2

Volcano

Question 3

Parts of a Volcano

Molten rock is also known as…

Answer 3

Magma

Question 4

Parts of a Volcano

Enumerate the Parts of a Volcano

Answer 4

• Main Vent
• Magma Chamber
• Crater
• Lava Flow
• Secondary Vent
• Secondary Cone
• Ash Cloud
• Ash

Question 5

Parts of a Volcano

Where magma passes through from the magma chamber to reach the Earth’s surface.

Answer 5

Main Vent

Question 6

Parts of a Volcano

Large reservoir that stores molten rock (magma) prior to eruption.

Answer 6

Magma Chamber

Question 7

Parts of a Volcano

Bowl shaped depression produced by volcanic activity and explosion.

Answer 7

Crater

Question 8

Parts of a Volcano

Stream of molten rock flowing out of the crater

Answer 8

Lava Flow

Question 9

Parts of a Volcano

Alternative smaller outlet where magma escapes.

Answer 9

Secondary Vent

Question 10

Parts of a Volcano

Also known as parasitic cone

Answer 10

Secondary Cone

Question 11

Parts of a Volcano

Formed when lava and ashes escape from smaller vents.

Answer 11

Secondary Cone

Question 12

Parts of a Volcano

Formed when thick volcanic ashes are discharged into the atmosphere caused by violent explosion or eruption.

Answer 12

Ash Cloud

Question 13

Parts of a Volcano

Mixture of rocks, minerals, and glass particles expelled during a volcanic eruption

Answer 13

Ash

Question 14

Types of Volcanoes According to Shape

Enumerate the Types of Volcanoes According to Shape.

Answer 14

• Cinder Cone Volcanoes
• Composite (stratovolcanoes) Volcanoes
• Shield Volcanoes
• [Lava Dome (this is not elaborated upon)]

Question 15

Types of Volcanoes According to Shape

Formed from pyroclastic fragments and volcanic ashes that solidify forming a cone which can be either circular or oval.

Answer 15

Cinder Cone Volcanoes

Question 16

Types of Volcanoes According to Shape

Also known as stratovolcanoes.

Answer 16

Composite Volcanoes

Question 17

Types of Volcanoes According to Shape

_ _ are typically symmetrical cones.

Answer 17

Composite Volcanoes

Question 18

Types of Volcanoes According to Shape

Have acidic and sticky lava, that solidifies without travelling very far.

Answer 18

Composite Volcanoes

Question 19

Types of Volcanoes According to Shape

Formed from non-acidic basaltic lava flows of high viscosity.

Answer 19

Shield Volcanoes

Question 20

Types of Volcanoes According to Shape

Not very explosive and are among the largest in the world

Answer 20

Shield Volcanoes

Question 21

Types of Volcanoes According to Eruptive History

Enumerate the types of volcanoes according to eruptive history.

Answer 21

• Active
• Dormant
• Extinct

Question 22

Types of Volcanoes According to Eruptive History

Active volcanoes have erupted within the last _ years.

Answer 22

600

Question 23

Types of Volcanoes According to Eruptive History

These volcanoes are active but not erupting.

Answer 23

Dormant

Question 24

Types of Volcanoes According to Eruptive History

These volcanoes have erupted within the last 10, 000 years.

Answer 24

Extinct

Question 25

# Phases of a Volcanic Eruption Enumerate the phases of a volcanic eruption.

Answer 25

1. Preperation Phase 2. Eruption Phase 3. Ending Phase

Question 26

# Phases of a Volcanic Eruption In this phase, the magma chamber is being filled with magma.

Answer 26

Preparation Phase

Question 27

# Phases of a Volcanic Eruption In this phase, the pressure will start to build up, then erupting, releasing rock fragments, pyroclastic materials, gases, and ashes.

Answer 27

Eruption Phase

Question 28

# Phases of a Volcanic Eruption In this phase, the magma chamber is empty, which may cause the walls of the conduit to collapse, forming a crater or caldera.

Answer 28

Ending Phase

Question 29

# Types of Volcanic Eruptions Enumerate the two main types of Volcanic Eruptions.

Answer 29

* Effusive Eruptions * Explosive Eruptions

Question 30

# Types of Volcanic Eruptions This eruption releases basaltic lava that is relatively **low in viscosity and low in gas content.**

Answer 30

Effusive Eruption

Question 31

# Types of Volcanic Eruptions This eruption releaser basaltic lava that is relatively **high in viscosity and high in gas content.**

Answer 31

Explosive Eruption

Question 32

# Types of Volcanic Eruptions Enumerate the **six** major types of Volcanic Eruptions.

Answer 32

* Hawaiian * Strombolian * Vulcanian * Plinian * Phreatic * Phreatomagmatic

Question 33

# Types of Volcanic Eruptions In this eruption, basaltic lava is thrrown into the air, ceating a **lava fountain.**

Answer 33

Hawaiian type

Question 34

# Types of Volcanic Eruptions In this eruption, there is a burst of glowing lava due to the bursting of gas bubble at the vents of the volcano.

Answer 34

Strombolian type

Question 35

# Types of Volcanic Eruptions In this eruption, scoria and lava bombs are created.

Answer 35

Strombolian type

Question 36

# Types of Volcanic Eruptions In this eruption, the eruption is short, explosive, and violent.

Answer 36

Vulcanian type

Question 37

# Types of Volcanic Eruptions This eruption is the **most violent among all types of volcanic eruptions.**

Answer 37

Plinian type

Question 38

# Types of Volcanic Eruptions This eruption, is usually destructive to land and property.

Answer 38

Plinian type

Question 39

# Types of Volcanic Eruptions This eruption is a steam-driven explosion.

Answer 39

Phreatic type

Question 40

# Types of Volcanic Eruptions This eruption involves the eruption of magma that reacts to external water, causing an explosion, releasing steam and pyroclastic fragments.

Answer 40

Phreatomagmatic type

Question 41

# Materials Extruded during Eruptions Enumerate the 3 Main Materials Extruded during Eruptions.

Answer 41

* Lava (cooled magma) * Tephra (rock fragments) * Gases

Question 42

# Materials Extruded during Eruptions _ refers to magma that has been expelled onto the Earth's surface.

Answer 42

Lava

Question 43

# Materials Extruded during Eruptions Enumerate the Types of Pyroclastic Materials (tephra)

Answer 43

* Volcanic Bombs * Volcanic Ash * Lapilli * Volcanic Blocks

Question 44

# Different Types of Pyroclastic Materials Large, dense pyroclastic that cool in the air before they reach the ground, commonly found in older shield volcanoes.

Answer 44

Volcano Bombs

Question 45

# Different Types of Pyroclastic Materials Large, dense pyroclastic that cool in the air before they reach the ground. Already solid when ejected.

Answer 45

Volcanic Blocks

Question 46

# Different Types of Pyroclastic Materials Mixture of powder-sized (2 mm or smaller) rocks, minerals, and gas particles.

Answer 46

Volcanic Ash

Question 47

# Different Types of Pyroclastic Materials Means "little stones" in Latin.

Answer 47

Lapilli

Question 48

Volcano comes from the Italian word _ which means " _ _ ", and also the Latin word _ the _ God of fire.

Answer 48

Volcano comes from the Italian word vulcano which means " burning mountain ", and also the Latin word Vulcan the Roman God of fire.

Question 49

# Effects of Volcanic Eruptions Do eruptions have good effects?

Answer 49

Yes

Question 50

# Effects of Volcanic Eruptions Give three good effects of Volcanic Eruptions.

Answer 50

* High levels of heat and activity underground can provide an alternative source of energy (geothermal energy). * Lava and ash deposits provide valuable resources to the soil, making it fertile. * May cause long-term effects on climate, and cause global cooling.

Question 51

# Effects of Volcanic Eruptions Give three bad effects of Volcanic Eruptions.

Answer 51

* Volcanic ashes and gases may cause breathing problems when inhaled. * May cause damage to crops, and properties, and may endanger the lives of people and animals in the area. * May form lahar, which can destroy properties and lives.