Landforms

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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  • Where does the River Thames start and end?

    Q: Where does the River Thames start and end?

    A: The River Thames originates in a meadow in the Cotswold Hills in Gloucestershire and travels 215 miles through England before emptying into the North Sea near Essex.
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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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  • How do mountains affect climate?

    Q: How do mountains affect climate?

    A: Mountains affect climate by blocking wind and receiving more rainfall than low-lying areas. As air is forced over higher ground, it cools, causing moisture to condense and fall as rain. The higher a location is above sea level, the colder it is. This occurs because as altitude increases, the surround airing becomes thinner and less effective at absorbing and retaining heat.
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  • How do volcanoes form landforms?

    Q: How do volcanoes form landforms?

    A: Volcanoes form landforms when the lava that flows out of the peak solidifies into rock. Magma is molten rock from the Earth's mantle pushed up by the action of plate tectonics. When the magma flows or explodes out of the top of the volcano, it is called lava. Over geological timescales, this lava keeps piling on top of successive strata of cooled rock, making several different kinds of landforms.
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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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  • 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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  • 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 state is Mount McKinley in?

    Q: What state is Mount McKinley in?

    A: Mount McKinley is the tallest mountain in North America, and it is located in Alaska. It is found in the Denali National Park and Reserve, which is approximately 6 million acres of wild land.
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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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  • 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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  • 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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  • What are the Appalachian Highlands?

    Q: What are the Appalachian Highlands?

    A: The Appalachian Highlands are a mountain range in Eastern North America. They run from Canada to regions of Georgia and through Alabama.
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  • What is the bottom of the ocean called?

    Q: What is the bottom of the ocean called?

    A: The bottom of the ocean is known as the hadalpelagic zone and extends from 19,686 feet to the bottom of the ocean floor. This area is found in canyons and deep-water trenches, and the deepest part is found in the Marianas trench.
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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 do the Pampas, prairies, steppes and the Highveld have in common?

    Q: What do the Pampas, prairies, steppes and the Highveld have in common?

    A: The Highveld, the Pampas, steppes and prairies are all grasslands, which are biomes dominated by grasses, flowers and herbs. Savannas and the Llanos region of northern South America are also grasslands.
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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 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 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 were the Snowy Mountains formed?

    Q: How were the Snowy Mountains formed?

    A: The Snowy Mountains in the Australian Alps started forming about 860 million years ago by different marine sediments when southeast Australia was covered by the sea, according to Swirk. Natural forces up folded and lifted these rocks, then were later flattened by erosion leaving the sharp edge plateaux seen today. The valleys were formed by river water erosion.
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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 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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