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The Limestone Landscape Trivia Quiz

Limestone is a common rock which forms some amazing landforms. It makes up 10% of all sedimentary rocks found on Earth. This quiz is about limestone and the formations it creates. Hope you learn something new!

A multiple-choice quiz by onlytrivial. Estimated time: 5 mins.

Author
onlytrivial

Time
5 mins

Type
Multiple Choice

Quiz #
205,359

Updated
Dec 03 21

# Qns
10

Difficulty
Tough

Avg Score
5 / 10

Plays
703

Last 3 plays: PurpleComet (7/10), Guest 120 (1/10), Guest 173 (3/10).

One at a Time - Single Page - Timed Game

Question 1 of 10

1. The name given to a region in which limestone formations dominate the scenery and topography is karst. In what country is the region that gives us this name? Hint

France

Hungary

Germany

Slovenia

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Question 2 of 10

2. A prominent form of limestone weathering is the dissolution of limestone by acids. What is the acid primarily responsible for this? Hint

Sulphuric acid

Hydrochloric acid

Hydric acid

Carbonic acid

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Question 3 of 10

3. Limestone is primarily comprised of which compound? Hint

Magnesium carbonate

Calcium carbonate

Calcium bicarbonate

Calcium oxide

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Question 4 of 10

4. This term refers to a closed depression in a limestone area formed by dissolution of the limestone or collapse of a bedrock roof of a cave. Hint

Cupola

Uvala

Swallow hole

Doline

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Question 5 of 10

5. Springs are common features of limestone areas. Resurgences and exsurgences are different than springs.

True

False

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Question 6 of 10

6. Stalactites and stalagmites, prominent cave formations, are examples of what? Hint

Speleothems

Geodes

Scallops

Helictites

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Question 7 of 10

7. Limestone pavements are large areas of flat, exposed limestone. They are made up of large slabs of limestone rock. What are these slabs of limestone called? Hint

Grikes

Facets

Karrens

Clints

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Question 8 of 10

8. These are steep karst towers of limestone, surrounded by flat alluvial plains. Hint

Mogotes

Aretes

Avens

Cenotes

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Question 9 of 10

9. A sedimentary rock containing calcium carbonate and clay. It is crumbly, unconsolidated and is often used as a fertilizer for lime deficient soils. Hint

Chalk

Calcite

Dolomite

Marl

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Question 10 of 10

10. What is a bourne? Hint

A stream in chalk areas which flows when the water table rises

An underground channel, carrying water from a cave to a spring

A closed depression which becomes filled with water when the water table rises

A rill in a limestone pavement, which is a small tributary of a stream

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Most Recent Scores

Apr 15 2024 : PurpleComet: 7/10
Apr 01 2024 : Guest 120: 1/10
Mar 17 2024 : Guest 173: 3/10
Mar 16 2024 : Guest 173: 5/10

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Quiz Answer Key and Fun Facts

1. The name given to a region in which limestone formations dominate the scenery and topography is karst. In what country is the region that gives us this name?

Answer: Slovenia

The Kras limestone plateau is on the Istrian Peninsula, east of Trieste. The word "karst" comes from the German name for the area. More generally, karst can mean any rock formation which has lost more of its material through dissolution rather than erosion. Most karst formations are limestone and most limestone formations are karst.

2. A prominent form of limestone weathering is the dissolution of limestone by acids. What is the acid primarily responsible for this?

Answer: Carbonic acid

Carbonic acid is a very weak acid which forms when rain water reacts with carbon dioxide in the atmosphere. It is, however, strong enough to dissolve limestone to form calcium bicarbonate, a cause of "hard water".

3. Limestone is primarily comprised of which compound?

Answer: Calcium carbonate

Calcium carbonate (CaCO3) can form different crystalline structures such as calcite and aragonite, but it is all limestone.

4. This term refers to a closed depression in a limestone area formed by dissolution of the limestone or collapse of a bedrock roof of a cave.

Answer: Doline

A doline is often referred to as a sinkhole, sometimes incorrectly. A sinkhole is a doline which contains a swallow hole, or a point where a stream disappears underground. Almost all dolines are also sinkholes. A uvala is formed when two or more dolines coalesce. A doline is usually wider than it is deep.

5. Springs are common features of limestone areas. Resurgences and exsurgences are different than springs.

Answer: False

A spring is a general term referring to an emergence of an underground stream. Both resurgences and exsurgences are types of springs. A resurgence is the emergence of a stream which was previously above ground, but disappeared through a swallow hole. An exsurgence is the emergence of water which was not part of a surface stream, but simply percolated water travelling through aquifers.

6. Stalactites and stalagmites, prominent cave formations, are examples of what?

Answer: Speleothems

Speleothems are formed through the precipitation and subsequent accumulation of substances such as calcium carbonate from their solutions, when they come into contact with air in the caves. Over time, the deposits grow to form large dripstones such as stalactites, stalagmites, helictites and heligmites.

7. Limestone pavements are large areas of flat, exposed limestone. They are made up of large slabs of limestone rock. What are these slabs of limestone called?

Answer: Clints

Clints are separated by joints, which become grikes when water seeps in the joints and dissolves the limestone, leaving large cracks and rills. Karrens refer to any channel or furrow formation on limestone rocks.

8. These are steep karst towers of limestone, surrounded by flat alluvial plains.

Answer: Mogotes

Mogotes are found in tropical regions, most notably in Puerto Rico and Cuba. They are tall pinnacles jutting from flat ground.

9. A sedimentary rock containing calcium carbonate and clay. It is crumbly, unconsolidated and is often used as a fertilizer for lime deficient soils.

Answer: Marl

Marl is a sedimentary rock and is formed from small eroded particles of limestone and clay compacted together.

10. What is a bourne?

Answer: A stream in chalk areas which flows when the water table rises

A bourne only flows with water when the water table rises high enough for baseflow to emerge. Mostly, they are found in southern England, around the chalk coasts.

Source: Author onlytrivial

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