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Glaciers are a large, long-lasting river of ice that is formed on land and moves in response to gravity. A glacier is formed by multi-year ice accretion in sloping terrain. Glacier ice is the largest reservoir of fresh water on Earth, and second only to the
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oceans as the largest reservoir of total water. Glaciers can be found on every continent except Australia.
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Volcanos are geological landforms (usually a mountain) where magma (rock of the Earth's interior made molten or liquid by extremely high temperatures along with a reduction in pressure and/or the introduction |
of water or other volatiles) erupts through the surface of the planet.
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The Great barrier reef is the world's largest coral reef. The reef is located in the Coral Sea off the coast of Queensland in north-east Australia. It stretches over 2000 kilometres in length and
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can be seen from space. An ancient barrier reef similar to the Great Barrier Reef can be found in The Kimberlies.
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Poland is a country located in Central Europe, between Germany to the west, the Czech Republic and Slovakia to the south, Ukraine and Belarus to the east, and the Baltic Sea. |
On May 3, 1791 the Sejm of the Commonwealth of Poland-Lithuania voted for the May Constitution of Poland.
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Erosion is the displacement of solids (soil, mud, rock, and so forth) by the agents of wind, water, ice, movement in response to gravity, or living organisms (in the case of bioerosion). Although the processes may be simultaneous,
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erosion is to be distinguished from weathering, which is the decomposition of rock. Erosion is an important natural process, but in many places it is increased by human activities.
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Igenous Rocks are formed when molten rock (magma) cools and solidifies, with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.
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This magma can be derived from either the Earth's mantle or pre-existing rocks made molten by extreme temperature and pressure changes.
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A geyser is a type of hot spring that erupts periodically, ejecting a column of hot water and steam into the air. The name geyser comes from Geysir, the name of an erupting spring at Haukadalur, Iceland; that name, in turn, comes from the verb gjósa, "to gush".
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The formation of geysers requires a favourable hydrogeology which exists in only a few places on Earth, and so they are fairly rare phenomena.
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Lake Bonneville was a prehistoric pluvial lake that covered much of North America's Great Basin region. Most of the territory it covered was in present-day Utah, though parts of the lake extended
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into present-day Idaho and Nevada. Formed about 32,000 years ago, it existed until about 16,800 years ago.
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Alaska is the 49th state of the United States. It was admitted on January 3, 1959, The population of the state is 626,932, as of 2000, according to the census. The name "Alaska" is most likely derived from the Aleut word Alyeska, meaning great country, mainland or great land. It is bordered by Yukon Territory and British Columbia, Canada to the east, the Gulf of Alaska and the Pacific Ocean to the south, the Bering Sea, Bering Strait, and Chukchi Sea to the west, and the Beaufort Sea and the Arctic Ocean to the north. Alaska is the largest state by area in the United States. It is larger in area than all but 18 of the world's nations.
Alaska was probably first inhabited by humans who came across the Bering Land Bridge.
Eventually, Alaska became populated by the Inupiaq, Inuit and Yupik Eskimos, Aleuts, and a variety of American Indian groups. Most, if not all, of the pre-Columbian population of the Americas probably took this route and continued further south and east.
The first written accounts indicate that the first Europeans to reach Alaska came from Russia. Vitus Bering sailed east and saw Mt. St. Elias. The Russian-American Company hunted sea otters for their fur. The colony was never very profitable, because of the costs of transportation. |
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