Download - True or False The volcano shown with its long, gentle slopes would best be described as a shield volcano. X.

Transcript

True or False

The volcano shown with its long, gentle slopes would best be described as a shield volcano.

X

ANSWER?

Click arrow for next question

True or False

Magma erupts through an opening in Earth’s crust called a vent.

X

ANSWER?

Click arrow for next question

True or False

Volcanoes associated with convergent plate boundaries form the Circum-Pacific and the Mediterranean Belts.

X

ANSWER?

Click arrow for next question

True or False

Composite volcanoes are made of basaltic lava.

X

ANSWER?

Click arrow for next question

True or False

Cinder-cone volcanoes have steep sides and are generally the smallest volcanoes.

X

ANSWER?

Click arrow for next question

True or False

Temperature and pressure decrease with depth beneath Earth’s surface.

X

ANSWER?

Click arrow for next question

True or False

A pluton is an intrusive metamorphic rock body formed from magma.

X

ANSWER?

Click arrow for next question

True or False

The hotter the magma or lava, the greater is its viscosity.

X

ANSWER?

Click arrow for next question

True or False

Lava that has low viscosity moves slower than lava with high viscosity

X

ANSWER?

Click arrow for next question

True or False

All volcanoes form at plate boundaries.

X

ANSWER?

Click arrow for next question

Internal resistance to flow is

a.Silicab.Tephra

c.pyroclasticd.viscosity

X

ANSWER?

Click arrow for next question

Depression that forms when the top or side of a volcano collapses into the magma chamber is aa.Calderab.Pluton

c.Tephrad.Pyroclastic

material

X

ANSWER?

Click arrow for next question

Opening in Earth’s crust through which lava erupts

a. Calderab. Craterc. Plutond. Vent

X

ANSWER?

Click arrow for next question

Types of plutons include ____.

a.shields, cinder-cones, and composites

b.vents, craters, and calderas

c.dust, ash, lapilli, volcanic blocks, and volcanic bombs

d.batholiths, stocks, sills, dikes, and laccoliths

X

ANSWER?

Click arrow for next question

Using the diagram to the right, which letter represents the crater associated with the volcano?a. Ab. Bc. Cd. D

X

ANSWER?

Click arrow for next question

Using the diagram to the right, which letter represents the magma chamber associated with the volcano?a. Ab. Bc. Cd. D

X

ANSWER?

Click arrow for next question

Bowl-shaped depression around a vent at the top of a volcano is a

a. Calderab. Craterc. Plutond. Vent X

ANSWER?

Click arrow for next question

According to the diagram, which Hawaiian Island is the oldest?

a. Loihib. Hawaiic. Kauaid. Molokai

X

ANSWER?

Click arrow for next question

Broad, gently sloping sides

a. shield volcanob. cinder-cone volcanoc. composite volcano

X

ANSWER?

Click arrow for next question

Made of layers of tephra and lava

a. shield volcanob. cinder-cone volcanoc. composite volcano

X

ANSWER?

Click arrow for next question

Steep-sided

a. shield volcanob. cinder-cone volcanoc. composite volcano

X

ANSWER?

Click arrow for next question

Largest of the volcanoes

a. shield volcanob. cinder-cone volcanoc. composite volcano

X

ANSWER?

Click arrow for next question

Forms from layers of basaltic lava

a. shield volcanob. cinder-cone volcanoc. composite volcano

X

ANSWER?

Click arrow for next question

Forms as tephra ejected high into the air fall back to Earth and pile around

the venta. shield volcanob. cinder-cone volcanoc. composite volcano

X

ANSWER?

Click arrow for next question

Forms in the upper mantle

a. basaltic magmab. andesitic magmac. rhyolitic magma

X

ANSWER?

Click arrow for next question

Magma with the lowest viscosity

a. basaltic magmab. andesitic magmac. rhyolitic magma

X

ANSWER?

Click arrow for next question

Most explosive form of magma

a. basaltic magmab. andesitic magmac. rhyolitic magma

X

ANSWER?

Click arrow for next question

Magma Characteristics

Type of Magma

Source Material

Viscosity Gas Content

1. 2. 3. 1–2%

Andesitic magma

4. 5. 3–4%

Rhyolitic magma

Continental crust

6. 4-6%

Which type of magma is in #1?

ANSWER?

Click arrow for next question

Magma Characteristics

Type of Magma

Source Material

Viscosity Gas Content

Basaltic magma

Upper mantle

3. 1–2%

Andesitic magma

Oceanic Crust

5. 3–4%

Rhyolitic magma

Continental crust

6. 4-6%

What is the viscosity of basaltic magma, low, medium or high?

ANSWER?

Click arrow for next question

Magma Characteristics

Type of Magma

Source Material

Viscosity Gas Content

Baslatic magma

Upper mantle

Low 1–2%

Andesitic magma

Oceanic Crust

5. 3–4%

Rhyolitic magma

Continental crust

6. 4-6%

What is the viscosity of andesitic magma, low, medium or high?

ANSWER?

Click arrow for next question

Magma Characteristics

Type of Magma

Source Material

Viscosity Gas Content

Basaltic magma

Upper mantle

Low 1–2%

Andesitic magma

Oceanic Crust

Medium 3–4%

Rhyolitic magma

Continental crust

6. 4-6%

What is the viscosity of rhyolitic magma, low, medium or high?

ANSWER?

Click arrow for next question

How is convergent volcanism different from divergent volcanism?

X

ANSWER?

Click arrow for next question

Contrast the three major types of volcanoes.

X

ANSWER?

Click arrow for next question

Final Jeopardy

• Why does lava containing large amounts of dissolved gases generally produce a more violent explosion than lava that contains small amounts of dissolved gases?