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Head For the Hills Trivia Quiz

Volcanoes are some of the most spectacular and beautiful land forms on Earth. Their violent eruptions often cause humans to "head for the hills", or perhaps, head AWAY from the hills. This quiz covers some common and not-so-common volcanic features.

A photo quiz by wjames. Estimated time: 4 mins.

Author
wjames

Time
4 mins

Type
Photo Quiz

Quiz #
372,483

Updated
Dec 03 21

# Qns
10

Difficulty
Average

Avg Score
6 / 10

Plays
590

Awards
Top 35% Quiz

One at a Time - Single Page

Question 1 of 10

1. Which rather avian term describes the column of ash that is ejected by an erupting volcano? Hint

Ash plume

Aviary ash

Ash beak

Ash aerie

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Question 2 of 10

2. Which category of volcano has relatively gently slopes and is generally large in area? Hint

Ant hill

Bowl

Shield

Foothill

3. These mineral chimneys remain after the surrounding softer volcanic material eroded away. These were formed by steam vents, openings in the crust that allow superheated water and gases to escape. What is the scientific name for these steam vents? Hint

Cauldron

Figarole

Fumarole

Caldera

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Question 4 of 10

4. This picture shows a day's worth of aircraft flights over the most volcanically-active area of the contiguous U.S. Which mountain range is this? Hint

Bitterroots

Western Rockies

Cascades

Sierra Nevada

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Question 5 of 10

5. These photos, the bottom a close-up, shows a volcanic feature that results from the slow extrusion of thick lava. What geometric-named feature is this? Hint

Basalt column

Lava dome

Rock igloo

Magma mound

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Question 6 of 10

6. This type of volcano is made up of small, usually unconsolidated, pieces of material that appear to be burnt. These steep-sided features can be side-vents on larger volcanoes or can be free-standing volcanoes. What is the "burnt" name for this feature? Hint

Ash mountain

Cinder cone

Cinder crater

Ember mound

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Question 7 of 10

7. When most people think of "volcano", they picture a symmetrical, steep-sided cone such as Mt. Fuji. Formed by repeated eruptions of different types of material that forms layers, how is this type of volcano known? Hint

Tent volcano

Stratovolcano

Classic volcano

Layered volcano

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Question 8 of 10

8. Yes, volcanoes do erupt under water. What are these volcanoes known as? Hint

Smoking chimneys

Benthic volcanoes

Submarine volcanoes

Mid-ocean ridges

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Question 9 of 10

9. Tuyas are rare volcanic mountains that are found in Iceland, British Columbia and a few other similar places. These volcanoes are formed when a volcano erupts through what material? Hint

Ancient seas

Softer surrounding rock

Sand

Ice

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Question 10 of 10

10. Although not a typical volcano since no molten rock is extruded, what is a common name for the pictured volcanic feature? Hint

Mud volcano

Cinder flow

Quick sand

Pyroclastic flow

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Quiz Answer Key and Fun Facts

1. Which rather avian term describes the column of ash that is ejected by an erupting volcano?

Answer: Ash plume

An ash plume is formed when pockets of gas contained in molten magma reach the surface and explode violently into the atmosphere. Ash is technically ejected matter that is less than 2mm (0.079 inches) in diameter, but common usage includes all ejected material, whatever the size, in the term "ash".

2. Which category of volcano has relatively gently slopes and is generally large in area?

Answer: Shield

These volcanoes are so named for their resemblance to a warrior's shield lying on the ground. Easy flowing, fairly liquid, lava forms these large, low volcanoes. This Icelandic volcano is named "Skjaldbrei�ur", meaning "Broad" (brei�ur) "Shield" (skjald).

Answer: Fumarole

Fumaroles are often formed as subterranean magma heats ground water to the boiling point. The high-temperature water is forced to the surface and when it enters an area of lower pressure, flashes into steam. Gases and minerals that may be dissolved in the water precipitate out, sometimes forming solid chimneys such as those pictured.

4. This picture shows a day's worth of aircraft flights over the most volcanically-active area of the contiguous U.S. Which mountain range is this?

Answer: Cascades

The Cascades extend from southern British Columbia, Canada to northern California. All of the continental U.S. volcanic eruptions in the last 200 year have come from them, and another like Mt. St. Helens in 1980 would pose a serious threat to air travel.

5. These photos, the bottom a close-up, shows a volcanic feature that results from the slow extrusion of thick lava. What geometric-named feature is this?

Answer: Lava dome

The silica-rich magma that forms lava domes is very viscous and doesn't flow very far once it is extruded from the volcano. Domes may be several hundred meters in height and some have been growing for centuries, such as on Mt. Merapi in Indonesia.

Answer: Cinder cone

Cinder cones are formed of small pieces of volcanic rock that build up around a vent. Some cones form after only one eruption, although some cinder cones, such as that pictured, result from multiple eruptions. Pictured is Izalco in El Salvador, which formed in 1770 and regularly erupted until 1958, so regularly that it became known as the "Lighthouse of the Pacific".

Answer: Stratovolcano

The strata, or bands of different materials, gives the name "stratovolcano" to these classic volcano shapes. The layers are made up of ash, lava and cinders that are built up, layer upon layer, over the long life of these volcanoes.

8. Yes, volcanoes do erupt under water. What are these volcanoes known as?

Answer: Submarine volcanoes

"Submarine" means simply "below water". The Mid-Atlantic Ridge is an area of active volcanism and sea-floor spreading. The island of Surtsey, off the southern coast of Iceland, began as a submarine volcano over 400 feet (130 meters) under water that finally broke the surface in November 1963.

9. Tuyas are rare volcanic mountains that are found in Iceland, British Columbia and a few other similar places. These volcanoes are formed when a volcano erupts through what material?

Answer: Ice

Tuyas are also rarely referred to as "mobergs", a portmanteau word made up of "mountain" and "iceberg". These volcanoes erupted under ice sheets, and gained their characteristic flat-topped and vertical-sided shapes from the rapidly cooling lava. The name comes from Tuya Butte in British Columbia; pictured is a tuya in Iceland, and these forms have also been found in Antarctica.

10. Although not a typical volcano since no molten rock is extruded, what is a common name for the pictured volcanic feature?

Answer: Mud volcano

True mud volcanoes are extrusions of slurries formed by heated water, subterranean mineral deposits and gases. A typical mud volcano may include cones of mud up to 2 meters high and 2 meters circumference, or it may be a wide, flat pool of warm mud. The largest mud volcanic feature is from Lusi in Indonesia, a mud shield 10 kilometers (6 miles) in diameter.

Source: Author wjames

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