Chapter 5 Clickers Natural Hazards Fourth Edition Volcanoes

Approximately two-thirds of all the active volcanoes on Earth are located a) b) c)

Magma begins to form if rocks are close to their melting temperature and the

Which is not a sinking plate in the “Ring of Fire”? a) b) c)

In order of increasing silica content, the three major types of magma are a)

The figure shown is an example of a ______ eruption. a) b) c) d)

Crater Lake (shown in the figure) is an example of a _______. a) b)

Tsunamis, fires, landslides, and debris flows are all examples of ____ of volcanic activity.

The Roman towns of Pompeii and Herculaneum were destroyed from the _______ of Mount

The figures on the previous slide show the before and after of what volcano?

The figures show the before and after of what volcano? a) b) c) d)

The shaded areas on the map show the _______ of the three labeled volcanoes.

The “year without a summer” in New England was a result of the Tambora

What is a natural service function that volcanoes provide? a) b) c) d) e)

What type of information is NOT used in forecasting volcanic eruptions? a) b) c)

_____ and _____ are significant factors in a person’s knowledge of the hazard and

Lava and other volcanic materials are extruded on to the surface through a a)

The largest type of volcanoes – common in the Hawaiian Islands, Iceland, and in

All of the following are direct hazards of ash fall except a) b) c)

If the _______ of the Yellowstone and Long Valley eruptions were experienced today, it

What method was used on the Icelandic Island of Heimaey to deflect the lava

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Approximately two-thirds of all the active volcanoes on Earth are located a) b) c) d) e) in the Atlantic Ocean. along the east coasts of continents. in the Indian Ocean. within the Ring of Fire. in Asia. © 2015 Pearson Education, Inc.

Magma begins to form if rocks are close to their melting temperature and the pressure from above is decreased in the process called a) b) c) d) e) addition of heat. addition of volatiles. decompression melting. subduction. None of the answers are correct. © 2015 Pearson Education, Inc.

In order of increasing silica content, the three major types of magma are a) b) c) d) e) Basaltic, andesitic, rhyolitic Basaltic, rhyolitic, andesitic Rhyolitic, basaltic, andesitic Rhyolitic, andesitic, basaltic Andesitic, rhyolitic, basaltic © 2015 Pearson Education, Inc.

Tsunamis, fires, landslides, and debris flows are all examples of ____ of volcanic activity. a) b) c) d) e) major effects minor effects primary effects secondary effects tertiary effects © 2015 Pearson Education, Inc.

The shaded areas on the map show the _______ of the three labeled volcanoes. a) b) c) d) e) lahar paths ash fallout areas earthquake areas lava flows All of the answers are correct. © 2015 Pearson Education, Inc.

The “year without a summer” in New England was a result of the Tambora volcano creating what? a) b) c) d) e) local tsunami global cloud of sulfuric acid droplets global earthquake global cloud of silica © 2015 Pearson Education, Inc.

What is a natural service function that volcanoes provide? a) b) c) d) e) Provide excellent growth medium for plants Create power for nearby urban areas Host minerals in volcanic rocks Provide recreational activities All are natural service functions of volcanoes. © 2015 Pearson Education, Inc.

What type of information is NOT used in forecasting volcanic eruptions? a) b) c) d) e) Monitoring the atmospheric pressure Monitoring volcanic gas emissions Monitoring seismic activity Monitoring thermal, magnetic, and hydrologic conditions Monitoring the land surface for tilting or swelling of the volcano © 2015 Pearson Education, Inc.

_____ and _____ are significant factors in a person’s knowledge of the hazard and possible adjustments to it. a) b) c) d) e) Age; level of education Age; length of residence near hazard Level of education; amount of family in the area Age; amount of family in the area © 2015 Pearson Education, Inc.

The largest type of volcanoes – common in the Hawaiian Islands, Iceland, and in the East African Rift – are _______ volcanoes. a) b) c) d) e) shield cinder cone lava dome stratovolcano continental caldera © 2015 Pearson Education, Inc.

All of the following are direct hazards of ash fall except a) b) c) d) e) aircraft engine “flame out” richer farming soil contamination of surface water irritation of the respiratory system damage to buildings © 2015 Pearson Education, Inc.

If the _______ of the Yellowstone and Long Valley eruptions were experienced today, it would devastate the U. S. economy and food production capabilities, as well as have negative impacts on global climate change. a) b) c) d) e) ash fall lahar landslides magma pyroclastic flow © 2015 Pearson Education, Inc.

What method was used on the Icelandic Island of Heimaey to deflect the lava flow from the main town? a) b) c) d) e) Wall construction Levees Addition of volatiles Hydraulic chilling Decompression melting © 2015 Pearson Education, Inc.