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Category Archives: earth
Is the Earth’s core solid?
Danish seismologist Inge Lehmann made the discovery in 1936 when she noticed seismic waves bouncing off a boundary point deep within what was believed to be a liquid center. With her finding, the world learned that Earth’s core is solid … Continue reading
Posted in earth
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Layers of Atmosphere:Ionosphere
The ionosphere is a name for the layer of the earth’s atmosphere that is ionized by solar wind. Even though many believe the space around earth is a vacuum, it is not completely empty. The sun’s upper atmosphere (the corona) … Continue reading
Posted in earth, Environment
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Magnetopause
The magnetic boundary between the Earth’s field and the solar wind, named the magnetopause, has a bullet-shaped front, gradually changing into a cylinder. Its cross-section is approximately circular.Distances in the magnetosphere are often measured in Earth radii (RE), with one … Continue reading
Posted in earth, Earth Magnetism
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Antarctic as World Park
Antarctica constitutes a large polar desert, characterized by year round below zero temperatures, scarce precipitations and strong winds. The continent is around 14 million km2, of which less than 2% is ice-free. The ice sheet rises to over 4000 meters … Continue reading
Posted in BIODIVERSITY, climate change, earth, Ecosystem
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