Natural Hazards Earths Processes as Hazards Disasters 3rd Edition Canadian Edition – Test Bank

Natural Hazards Earths Processes as Hazards Disasters 3rd Edition Canadian Edition – Test Bank

Natural Hazards, 3e (Keller)

Chapter 5   Volcanoes

1) On which of the following plate boundaries are volcanoes not typically found?

A) Mid-Ocean Ridges

B) Continental Rifts

C) Subduction Zones

D) Transform Faults

E) Volcanoes are found on all plate boundaries

Answer:  D

Section:  5.1

Bloom’s Taxonomy:  Comprehension

2) What is the difference between magma and lava?

A) Magma is molten rock, Lava is hot rock and water

B) Magma is black, Lava is red

C) Magma is found below the surface, Lava is found on the surface

D) Magma is found on the ocean floor, Lava is found on land surface

E) There is no difference between lava and magma

Answer:  C

Section:  5.1

Bloom’s Taxonomy:  Knowledge

3) Why are so many volcanoes found on the Ring of Fire in the Pacific Ocean?

A) Many hot spots are found there.

B) Many subduction zones are found there

C) The Pacific Ocean is very hot, causing rock to melt

D) The climate is hot there, causing more volcanoes

E) The seafloor is spreading there

Answer:  B

Section:  5.1

Bloom’s Taxonomy:  Comprehension

4) Which of the following is true about Magma?

A) Most magmas come from the asthenosphere

B) Some magma comes from rocks melted through decompression

C) Chemical compounds can decrease the melting point of rock causing magma

D) Some rocks are melted from magma that is on the rise

E) All of the above are true of magma

Answer:  E

Section:  5.1

Bloom’s Taxonomy:  Knowledge

5) Which of the following lists magma types in order of increasing viscosity(least viscous first)?

A) Basaltic, andesitic, rhyolitic

B) Basaltic, rhyolitic, andesitic

C) Rhyolitic, basaltic, andesitic

D) Rhyolitic, andesitic, basaltic

E) Andesitic, rhyolitic, basaltic

Answer:  A

Section:  5.1

Bloom’s Taxonomy:  Knowledge

6) Which of the following magma types will flow the fastest?

A) Basaltic

B) Andesitic

C) Rhyolitic

D) White

E) All lava flows the same

Answer:  A

Section:  5.1

Bloom’s Taxonomy:  Comprehension

7) Which type of magma typically results in the greatest explosive events?

A) Basaltic

B) Andesitic

C) Rhyolitic

D) Pahoehoe

E) A’A’

Answer:  C

Section:  5.1

Bloom’s Taxonomy:  Comprehension

8) What is a volatile?

A) Projectiles fired from the volcano

B) Irritants like ash that can make the volcano erupt

C) Mud and lava that is extruded from the volcano

D) Silicate minerals in the magma

E) Gases trapped in the magma

Answer:  E

Section:  5.1

Bloom’s Taxonomy:  Knowledge