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The document describes different types of mixtures and separation techniques. It defines a mixture as two or more substances combined without a chemical reaction that maintain their individual properties. Mixtures are either heterogeneous, with components visually distinguishable, or homogeneous. Common separation techniques include distillation, filtration, chromatography, and others that separate mixtures based on differences in their boiling points, ability to pass through filters, or interactions with magnetic or other fields.
EUSKAL HERRIKO IBAIAK
Inguruneko saioetan Sasoeta Eskolako 5. mailako ikasle guztien artean sortutako dokumentua.
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Volcanic eruptions can profoundly impact climate and the Earth's surface. Large eruptions eject ash and gases into the atmosphere, which can block sunlight and cause global temperatures to drop. There are three main types of volcanoes: shield volcanoes formed from nonexplosive eruptions creating gentle slopes; cinder cone volcanoes from moderately explosive eruptions forming steep slopes; and composite volcanoes from alternating explosive and lava flows creating broad bases that steepen toward their summits. In addition to volcanoes, other volcanic landforms include craters at volcano tops, calderas which are large depressions formed when the magma chamber empties, and lava plateaus resulting from nonexplosive eruptions
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