Landforms

A:

Coastal plains are flat, low-lying pieces of land that feature a body of water on one side and some type of landform on the other. According to National Geographic, a coastal plain can form either as a continental shelf or when water currents carry sedimentary materials that build up over time.

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  • When was the last time Mount Vesuvius erupted?

    Q: When was the last time Mount Vesuvius erupted?

    A: Mount Vesuvius' last eruption was in March of 1944. The eruption destroyed the villages of San Sebastiano al Vesuvio, Massa di Somma, Ottaviano, and part of San Giorgio a Cremano.
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  • What causes metamorphic rocks to form?

    Q: What causes metamorphic rocks to form?

    A: Metamorphic rocks form when igneous or sedimentary rocks are subjected to extreme heat, pressure or chemical reactions. These forces alter the composition of the rocks, leading to changes in the rocks' density, appearance and structure.
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  • What is a plateau?

    Q: What is a plateau?

    A: A plateau refers either to a piece of land that is level and located above nearby land, or the term can refer to a situation that is relatively unchanged for a period of time. In the case of an unchanged situation, the word has either a negative or a positive connotation, depending on whether change is advantageous.
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  • What are the windward and leeward sides of a mountain?

    Q: What are the windward and leeward sides of a mountain?

    A: The windward side of a mountain faces the wind while the leeward side faces away from the prevailing wind. The climate on different sides of the mountain can vary greatly.
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  • What is a billabong?

    Q: What is a billabong?

    A: A billabong is essentially a large pond or creek that at one time extended from a river. A billabong is the cut off extension of a river that changed its course over time. During a wet season, the billabong often connects back with the river, receiving fresh water, at least until the area dries back up.
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  • How were the Hawaiian Islands formed?

    Q: How were the Hawaiian Islands formed?

    A: The Hawaiian Islands are volcanic in origin, and they formed millions of years ago. According to the National Ocean Service, the islands developed because of a hot spot in the middle of the Pacific Ocean. The consistent eruption of lava fed by the hot spot resulted in volcano formations that rose above sea level to form the islands of Hawaii.
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  • How do geysers form?

    Q: How do geysers form?

    A: A geyser is essentially an underground hot spring that, owing to pressure exerted against its constricted plumbing toward the surface of the ground, issues a stream of steam and boiling water from time to time. The term "geyser" is derived from the Icelandic word "geysir," which means to rush forth. A geyser stops erupting once its reservoir is empty, or the water below the surface cools.
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  • How old is Mount Vesuvius?

    Q: How old is Mount Vesuvius?

    A: Mount Vesuvius is approximately 17,000 years old. It formed upon the site of a previous volcano. Vesuvius has a long history of eruptions, beginning with the first known eruption in 5960 B.C.
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  • How do parabolic dunes form?

    Q: How do parabolic dunes form?

    A: As with all dunes, parabolic dunes are primarily shaped by the wind. Parabolic dunes tend to proliferate in places where wind blows predominantly in one direction and the movement of sand is restrained by vegetation.
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  • What do Mount Etna in Sicily and Mount St. Helens in the U.S. have in common?

    Q: What do Mount Etna in Sicily and Mount St. Helens in the U.S. have in common?

    A: Both Mount Etna and Mount St. Helens are active stratovolcanoes, also known as composite volcanoes. In addition, both have experienced major activity in the twentieth and twenty-first centuries.
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  • What makes a continent?

    Q: What makes a continent?

    A: A continent is a large land mass on Earth that is distinguished by a separation from other land by water or by a distinct cultural difference. Earth has a total of seven continents: North America, South America, Europe, Africa, Asia, Australia and Antarctica.
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  • What is a group of mountains called?

    Q: What is a group of mountains called?

    A: A group of mountains is known as a mountain range. A group of ranges that share a common origin and form are a mountain system. A group of systems are a mountain chain. A group of ranges, systems and chains are known as a mountain belt or a cordillera.
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  • What are examples of peninsulas?

    Q: What are examples of peninsulas?

    A: Peninsulas are found all around the world; in the United States, two prominent examples are the Upper Peninsula in Michigan and the Delmarva Peninsula in Maryland. Peninsulas are chunks of land that are surrounded on three sides by water and joined to larger bodies of land by a neck, called an isthmus. Peninsulas occur primarily along ocean coastlines, although they appear along large river borders too.
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  • What is the Tonga Trench?

    Q: What is the Tonga Trench?

    A: The Tonga Trench is a submarine trench located in the floor of the South Pacific Ocean. It forms the eastern boundary of the Tonga Ridge. It's 35,702 feet deep at its deepest point and has an average depth of 20,000 feet. It's about 50 miles wide and 850 miles in length. The Tonga Trench and Tonga Ridge form the northern half of the Tonga-Kermadec Arc.
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  • How did the Grand Canyon form?

    Q: How did the Grand Canyon form?

    A: The Grand Canyon was formed primarily by erosion from the constant water flow of the Colorado River. This erosion occurred gradually over the past 5 to 6 million years.
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  • What are some facts about coastal plains?

    Q: What are some facts about coastal plains?

    A: Coastal plains are flat, low-lying pieces of land that feature a body of water on one side and some type of landform on the other. According to National Geographic, a coastal plain can form either as a continental shelf or when water currents carry sedimentary materials that build up over time.
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  • What are the physical features of the arctic lowlands?

    Q: What are the physical features of the arctic lowlands?

    A: The arctic lowlands consist of several barren low-lying islands with coastlines dominated by sheer, towering cliffs and frigid surrounding waters of the Atlantic that contain pieces of massive ice sheets. Together, the lowlands comprise the southwestern Arctic Archipelago. They vary in size and shape: some are small and unpopulated, while others, including Victoria Island, are much larger.
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  • What is a delta in geography?

    Q: What is a delta in geography?

    A: A delta is an area of land in which a river divides into smaller rivers and empties into a larger body of water. It is also possible to have a delta that empties into land, but it is uncommon.
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  • Where are fjords found?

    Q: Where are fjords found?

    A: According to Geology professor Atle Nesje of Bergen University, fjords occur where there was glacial activity below where the sea level is as of modern times. Fjords.com notes that Norway and Canada are home to fjords and fjord lakes.
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  • What is the difference between a canyon and a gorge?

    Q: What is the difference between a canyon and a gorge?

    A: A gorge is a much smaller, narrower version of a canyon. A gorge is similar to a ravine, while a canyon is similar to a valley. Gorges are located between mountains or hills and often have small streams at their bottoms.
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  • Why are deserts so dry?

    Q: Why are deserts so dry?

    A: Deserts are dry because the air above them is lacking moisture. This is caused by rain shadows, moisture sources being too far away, cold ocean currents nearby or the Earth's circulation patterns.
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