Ch 3: Volcanoes

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What is the defining characteristic of cinder cone volcanoes?

They are formed from multiple layers of hardened lava and ash.

They are steep conical mounds formed by explosive eruptions. (correct)

They are known for releasing harmful gases during eruptions.

They have gentle slopes formed by low-viscosity lava.

Which type of volcano is exemplified by Mauna Loa in Hawaii?

Composite volcano

Stratovolcano

Shield volcano (correct)

Cinder cone volcano

What distinguishes composite (stratovolcanoes) from shield volcanoes?

They have conical shapes with multiple layers of lava and ash. (correct)

They have gentle slopes.

They eject lava fragments forming mounds around the vent.

They are formed by effusive eruptions.

What is a positive impact of volcanic activity mentioned in the text?

Boosting local economies through tourism. Signup and view all the answers

Which volcanic feature attracts significant tourist interest according to the text?

Calderas, hot springs, and geysers. Signup and view all the answers

Why are volcanic soils beneficial for agriculture?

They are rich in nutrients, making them fertile for farming. Signup and view all the answers

'Water Pollution' is listed as a negative impact of volcanic activity due to:

Ash contamination of water supplies. Signup and view all the answers

What can destroy settlements, infrastructure, and agricultural land according to the text?

'Mudflows' and lava flows resulting from eruptions. Signup and view all the answers

'Understanding their formation, types, and effects helps in mitigating risks and harnessing benefits' - this statement emphasizes the importance of:

'Applying knowledge to reduce risks and utilize benefits.' Signup and view all the answers

'Composite Volcanoes (Stratovolcanoes)' are notable for:

'Steep, conical shapes with multiple layers of lava and ash.' Signup and view all the answers

What is the geological process that leads to the formation of volcanoes?

Rise of magma from beneath Earth's surface Signup and view all the answers

Where does magma originate in the Earth?

Mantle or lower crust due to melting Signup and view all the answers

What drives magma to ascend through cracks or pipes in the Earth's crust?

Buoyancy relative to the surrounding solid rock Signup and view all the answers

In the formation of volcanoes, what is the pool where magma may collect near the Earth's surface called?

Magma Chamber Signup and view all the answers

What happens when magma pushes through a vent to the surface of the Earth?

It becomes known as lava when exposed to air Signup and view all the answers

Which type of volcanoes have erupted recently and are likely to erupt again?

Active Volcanoes Signup and view all the answers

What characterizes Dormant Volcanoes?

They have shown no recent activity Signup and view all the answers

What is the main characteristic of cinder cone volcanoes?

Steep conical mounds formed by explosive eruptions Signup and view all the answers

What is the primary reason volcanic areas can be rich in minerals, including diamonds?

Concentration of minerals in old volcanic pipes Signup and view all the answers

Which type of volcano is known for its gentle slopes formed by effusive lava flows?

Shield Volcanoes Signup and view all the answers

What is a notable negative impact of volcanic eruptions according to the text?

Destruction of settlements due to lava flows and mudflows Signup and view all the answers

Which volcanic feature is cited as attracting significant tourist interest?

Calderas, hot springs, and geysers Signup and view all the answers

What differentiates shield volcanoes from composite (stratovolcanoes)?

Characterized by gentle slopes vs. steep, conical shapes Signup and view all the answers

Why are volcanic soils particularly beneficial for agriculture?

Rich in nutrients due to mineral deposits from eruptions Signup and view all the answers

Which type of volcano is exemplified by Monte Nuovo in Italy?

Cinder Cone Volcanoes Signup and view all the answers

What is a detrimental effect of volcanic activity mentioned in the text?

Destruction of settlements, infrastructure, and agricultural land. Signup and view all the answers

What forms steep conical mounds around the vent?

Ash and lava fragments solidifying in the air. Signup and view all the answers

How does magma form in the Earth's mantle or lower crust?

Because of melting caused by pressure, heat, or the presence of water Signup and view all the answers

What drives magma to ascend through cracks or pipes in the Earth's crust?

Buoyancy relative to surrounding solid rock Signup and view all the answers

What is the key factor that differentiates active volcanoes from dormant and extinct ones?

Their past eruption history Signup and view all the answers

What happens when magma pushes through a vent to the surface during a volcanic eruption?

It becomes lava upon exposure to air Signup and view all the answers

Why are dormant volcanoes considered potentially dangerous despite showing no recent activity?

Because they have erupted in the past and could erupt in the future Signup and view all the answers

What is a distinguishing feature of extinct volcanoes?

They have not erupted in recorded history Signup and view all the answers

What can happen if magma pools in a magma chamber near the Earth's surface?

It can build pressure over time Signup and view all the answers

Which factor contributes to the classification of volcanoes based on their eruptive history?

Whether they have erupted recently and are likely to erupt again Signup and view all the answers

What is the key factor that contributes to the formation of volcanoes?

Tectonic plate movement Signup and view all the answers

What is the term used to describe magma's transformation into lava upon reaching the Earth's surface?

Solidification Signup and view all the answers

What geological feature is likely to form when magma does not reach the Earth's surface?

Intrusion Signup and view all the answers

Which type of volcano exhibits a bowl-shaped depression at the summit formed by the collapse of the volcano's top?

Caldera volcano Signup and view all the answers

What is a potential consequence of pressure buildup in a magma chamber near the Earth's surface?

Explosive volcanic eruption Signup and view all the answers

Which volcanic hazard can be triggered by the subsurface intrusion of magma beneath the Earth's surface?

Pyroclastic flow Signup and view all the answers

What distinguishes dormant volcanoes from extinct volcanoes based on their activity level?

Dormant volcanoes have erupted recently. Signup and view all the answers

What distinguishes shield volcanoes from composite (stratovolcanoes)?

Shield volcanoes have steep conical shapes, while composite volcanoes have gentle slopes. Signup and view all the answers

What is the primary reason behind the formation of cinder cone volcanoes?

Ejection of ash and lava fragments that solidify in the air. Signup and view all the answers

What is a significant impact of volcanic activity related to mineral resources?

Richness in minerals like diamonds in volcanic areas. Signup and view all the answers

How do shield volcanoes differ from cinder cone volcanoes in terms of eruption style?

Shield volcanoes have explosive eruptions, while cinder cone volcanoes have effusive eruptions. Signup and view all the answers

What distinguishes composite (stratovolcanoes) from both shield and cinder cone volcanoes?

Composite volcanoes consist of multiple layers of hardened lava, ash, and rock debris, while shield and cinder cone volcanoes are mostly one-layered. Signup and view all the answers

How do shield volcanoes contribute positively to agriculture?

Through the effusive eruption of low-viscosity lava enriching the soil. Signup and view all the answers

What distinguishes Mauna Loa in Hawaii as an example of a shield volcano?

Gentle slopes formed by effusive low-viscosity lava flows. Signup and view all the answers

What key factor contributes to the classification of stratovolcanoes as composite volcanoes?

The formation from multiple layers of hardened lava, ash, and rock debris Signup and view all the answers

What negative impact of volcanic activity results from the contamination of water supplies?

Impacting drinking water and agriculture Signup and view all the answers

What is the defining characteristic that differentiates cinder cone volcanoes from both shield and composite volcanoes?

Ejection of ash and lava fragments solidifying in the air Signup and view all the answers

Ch 3: Volcanoes

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Questions and Answers

What is the defining characteristic of cinder cone volcanoes?

Which type of volcano is exemplified by Mauna Loa in Hawaii?

What distinguishes composite (stratovolcanoes) from shield volcanoes?

What is a positive impact of volcanic activity mentioned in the text?

Which volcanic feature attracts significant tourist interest according to the text?

Why are volcanic soils beneficial for agriculture?

'Water Pollution' is listed as a negative impact of volcanic activity due to:

What can destroy settlements, infrastructure, and agricultural land according to the text?

'Understanding their formation, types, and effects helps in mitigating risks and harnessing benefits' - this statement emphasizes the importance of:

'Composite Volcanoes (Stratovolcanoes)' are notable for:

What is the geological process that leads to the formation of volcanoes?

Where does magma originate in the Earth?

What drives magma to ascend through cracks or pipes in the Earth's crust?

In the formation of volcanoes, what is the pool where magma may collect near the Earth's surface called?

What happens when magma pushes through a vent to the surface of the Earth?

Which type of volcanoes have erupted recently and are likely to erupt again?

What characterizes Dormant Volcanoes?

What is the main characteristic of cinder cone volcanoes?

What is the primary reason volcanic areas can be rich in minerals, including diamonds?

Which type of volcano is known for its gentle slopes formed by effusive lava flows?

What is a notable negative impact of volcanic eruptions according to the text?

Which volcanic feature is cited as attracting significant tourist interest?

What differentiates shield volcanoes from composite (stratovolcanoes)?

Why are volcanic soils particularly beneficial for agriculture?

Which type of volcano is exemplified by Monte Nuovo in Italy?

What is a detrimental effect of volcanic activity mentioned in the text?

What forms steep conical mounds around the vent?

How does magma form in the Earth's mantle or lower crust?

What drives magma to ascend through cracks or pipes in the Earth's crust?

What is the key factor that differentiates active volcanoes from dormant and extinct ones?

What happens when magma pushes through a vent to the surface during a volcanic eruption?

Why are dormant volcanoes considered potentially dangerous despite showing no recent activity?

What is a distinguishing feature of extinct volcanoes?

What can happen if magma pools in a magma chamber near the Earth's surface?

Which factor contributes to the classification of volcanoes based on their eruptive history?

What is the key factor that contributes to the formation of volcanoes?

What is the term used to describe magma's transformation into lava upon reaching the Earth's surface?

What geological feature is likely to form when magma does not reach the Earth's surface?

Which type of volcano exhibits a bowl-shaped depression at the summit formed by the collapse of the volcano's top?

What is a potential consequence of pressure buildup in a magma chamber near the Earth's surface?

Which volcanic hazard can be triggered by the subsurface intrusion of magma beneath the Earth's surface?

What distinguishes dormant volcanoes from extinct volcanoes based on their activity level?

What distinguishes shield volcanoes from composite (stratovolcanoes)?

What is the primary reason behind the formation of cinder cone volcanoes?

What is a significant impact of volcanic activity related to mineral resources?

How do shield volcanoes differ from cinder cone volcanoes in terms of eruption style?

What distinguishes composite (stratovolcanoes) from both shield and cinder cone volcanoes?

How do shield volcanoes contribute positively to agriculture?

What distinguishes Mauna Loa in Hawaii as an example of a shield volcano?

What key factor contributes to the classification of stratovolcanoes as composite volcanoes?

What negative impact of volcanic activity results from the contamination of water supplies?

What is the defining characteristic that differentiates cinder cone volcanoes from both shield and composite volcanoes?

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