Volcano

Question 1

A landform that forms when magma rises from the Earth’s crust and erupts.

Answer 1

Volcano

Question 2

An underground reservoir that collects and supplies magma during eruptions.

Answer 2

Magma Chamber

Question 3

Molten rock beneath the Earth’s surface, containing dissolved gases and crystals.

Answer 3

Magma

Question 4

The opening through which magma, gases, and ash escape to the surface.

Answer 4

Vent

Question 5

The pathway that magma follows to reach the surface.

Answer 5

Conduit

Question 6

A circular depression at the top of a volcano that surrounds the main vent.

Answer 6

Crater

Question 7

Magma that has reached the Earth’s surface and solidifies when exposed to air.

Answer 7

Lava

Question 8

A large, basin-shaped depression formed when the summit collapses after an eruption.

Answer 8

Caldera

Question 9

An eruption characterized by a slow, steady flow of lava from the vent.

Answer 9

Effusive

Question 10

An eruption involving rapid release of gas, ash, and a violent blast.

Answer 10

Explosive

Question 11

An eruption caused by magma interacting with groundwater, releasing steam and ash.

Answer 11

Phreatic

Question 12

Type of gas content that causes explosive eruptions.

Answer 12

High Gas Content

Question 13

Type of gas content that causes effusive eruptions.

Answer 13

Low Gas Content

Question 14

Name 3 kinds of eruptions

Answer 14

explosive, phreatic, high gas content, and low gas content

Question 15

A cone-shaped volcano formed by layers of lava and ash.

Answer 15

Composite Volcano

Question 16

A broad, gently sloping volcano formed by highly fluid lava flows.

Answer 16

Shield Volcano

Question 17

The simplest type of volcano with a narrow base and steep slopes, formed by cinders.

Answer 17

Cinder Cone

Question 18

Name all 3 types of volcanoes

Answer 18

Cinder cone Shield volcano composite volcano

Question 19

1. Area where tectonic plates move, and volcanoes usually form.

Answer 19

Plate Boundaries

Question 20

Plate boundary where plates move apart, allowing magma to rise from the mantle and create volcanoes.

Answer 20

Divergent Boundary

Question 21

Plate boundary where plates collide, causing intense heat and pressure that melt parts of the plate to create magma.

Answer 21

Convergent Boundary

Question 22

Increased seismic activity that often occurs before a volcanic eruption.

Answer 22

Seismicity

Question 23

Release of gases like sulfur dioxide and carbon dioxide before an eruption.

Answer 23

Gas Emissions

Question 24

Changes in ground elevation or tilt indicating magma movement.

Answer 24

Ground Deformation

Question 25

Increased heat flow that suggests magma is rising.

Answer 25

Thermal Monitoring

Question 26

Magma rises because it is less dense than the surrounding rock.

Answer 26

Buoyancy

Question 27

Tools used to track volcanic activity, such as seismometers, gas detectors, and GPS.

Answer 27

Monitoring

Question 28

Studying volcanoes to learn about Earth's internal processes and develop risk mitigation strategies.

Answer 28

Research

Question 29

Process of using monitoring data to understand volcanic behavior and warn people about potential hazards.

Answer 29

Prediction

Question 30

When magma rises from the mantle and gets stored in the magma chamber, building up pressure.

Answer 30

Pressure Build-up

Question 31

Expansion of dissolved gases in magma (like water vapor) as pressure decreases.

Answer 31

Gas Expansion

Question 32

Pressure fractures surrounding rock, creating pathways for eruption.

Answer 32

Fractures

Question 33

Dissolved gases in magma expand as pressure increases, making eruptions stronger.

Answer 33

Gases

Question 34

Natural events such as earthquakes, tectonic movements, or changes in surrounding rocks that trigger eruptions.

Answer 34

Triggers

Question 35

Fine-grained rock fragments ejected into the atmosphere during an eruption, causing respiratory problems and infrastructure damage.

Answer 35

Ash

Question 36

streams of molten rock that destroy everything in their path, with speed and distance depending on viscosity.

Answer 36

Lava Flows

Question 37

Fast-moving mixtures of hot gas and volcanic debris that can travel over 100 km/h.

Answer 37

Pyroclastic Density Currents

Question 38

Volcanic hazard that disrupts transportation, agriculture, and power systems by depositing fine ash.

Answer 38

Ashfall

Question 39

Orders issued to move people out of an area when an eruption is imminent.

Answer 39

Evacuation Orders

Question 40

Designated safe locations with essential supplies for people to evacuate to.

Answer 40

Emergency Shelters

Question 41

Teams of trained professionals who handle evacuations and rescue operations during volcanic emergencies.

Answer 41

Emergency Response Teams

Question 42

Codes that ensure structures are built to withstand volcanic hazards like ash and lava.

Answer 42

Building Codes

Question 43

Clearly marked pathways to help people evacuate safely during volcanic emergencies.

Answer 43

Evacuation Routes

Question 44

Systems used to share information and warnings about volcanic activity.

Answer 44

Communication Systems

Question 45

Educating the public about volcanic hazards and how to prepare for emergencies.

Answer 45

Public Awareness

Question 46

Preparations such as having an emergency plan, knowing evacuation routes, and keeping a go-kit with essential supplies.

Answer 46

Volcanic Eruption Preparedness