Landforms

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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  • 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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  • 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 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 main landforms in the desert?

    Q: What are the main landforms in the desert?

    A: The most common landscape features found in deserts are sand dunes, yardangs, desert pavements, debris, playas, oases, mesas, alluvial fans, arroyos and buttes. These landforms vary from desert to desert.
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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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  • 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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  • 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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  • 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 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 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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  • How are islands formed?

    Q: How are islands formed?

    A: Islands form in several ways. The most common events that lead to island formation are volcanic activity and continental drift. Islands also form due to erosion, buildup of sediment and coral that grows enough to penetrate the surface of the water.
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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 ring-shaped coral island called?

    Q: What is a ring-shaped coral island called?

    A: A ring-shaped coral island is called an atoll. According to Encyclopedia Britannica, an atoll is made up of sections of coral reef that form a closed shape around a central lagoon.
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  • How do landforms affect climate?

    Q: How do landforms affect climate?

    A: Landforms affect climate by altering the wind and rate of evaporation, which can cause changes in the temperature, humidity and precipitation of a region. When storm fronts run into landforms, such as mountains or high plateaus, rain clouds are sometimes blocked. This causes the upwind side of the landform to receive plentiful rainfall, while the downwind side of the structure remains dry.
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  • What is an example of a raised flat area?

    Q: What is an example of a raised flat area?

    A: An example of a raised flat area is a plateau. A plateau is a large flat region of land higher than the other areas of land surrounding it.
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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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  • How do you define "Barrier Island"?

    Q: How do you define "Barrier Island"?

    A: A barrier island is a long, thin stretch of sand deposited parallel to the mainland. One side of a barrier island faces the ocean, while the other side faces an estuary, bay or lagoon that separates the island from the mainland. Barrier islands are popular tourist attractions and contain fragile ecosystems with distinct habitats and wildlife. Due to their location, barrier islands serve as protection from storms for the mainland.
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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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  • 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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  • 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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  • How did oceans form?

    Q: How did oceans form?

    A: Nearly 3.8 billion years ago, temperatures on Earth cooled below 100 degrees Celsius for the first time, allowing water, which existed on the planet in gaseous form, to condense into rain and collect on the planet's surface, according to the American Museum of Natural History. This water collected in low-lying areas, eventually becoming a primitive ocean.
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