Ocean - Wikipedia, the free encyclopedia
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An ocean (from Greek , Okeanos (Oceanus)) is a major body of saline water, and a principal component of the hydrosphere. Approximately 71% of the Earth's surface (an area of some 361000000 square ...
en.wikipedia.org/wiki/Ocean
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Most of the Earth's surface (70%) is covered with water, and the remaining 30% is taken up by the seven continental landmasses. However, underneath the water that fills the oceans, and the dirt and plants that cover the continents, the Earth’s surface layer is made of rock.
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www.windows.ucar.edu/tour/link=/earth/Interior_Structur...
www.windows.ucar.edu/tour/link=/earth/Interior_Structure/surface.html
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Water forms some features of Earth's surface such as rivers, oceans, beaches and lakes. Other surface features, such as mountains, earthquakes and volcanoes, are formed when large pieces of the Earth’s outer layer move slowly by plate tectonics.
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www.windows.ucar.edu/tour/link=/earth/Interior_Structur...
www.windows.ucar.edu/tour/link=/earth/Interior_Structure/overview.html
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Science Investigations: Investigating the Earth's Surface video ... After watching the video, ask students to define a satellite. (An artificial object or vehicle that orbits the Earth.) How are satellites used in GPS? (A satellite network plots coordinates on the Earth's surface.) How is GPS technology used?
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school.discoveryeducation.com/lessonplans/programs/eart...
school.discoveryeducation.com/lessonplans/programs/earthssurface/
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Human-made lights highlight particularly developed or populated areas of the Earth's surface, including the seaboards of Europe, the eastern United States, and Japan. Many large cities are located near rivers or oceans so that they can exchange goods cheaply by boat.
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antwrp.gsfc.nasa.gov/apod/ap001127.html
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You and I live on the earth's lithosphere. The lithosphere consists of two parts, a thin outside layer of solid rock called the crust and the rigid upper part of the mantle. It seems so solid that you would think the earth is solid all the way through. ... The magma is less dense which rises to the surface forming volcanoes.
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www.usoe.k12.ut.us/curr/science/sciber00/8th/earth/scib...
www.usoe.k12.ut.us/curr/science/sciber00/8th/earth/sciber/surface.htm
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The earth seen from space looks like a blue colored planet with constant moving swirls of clouds of earth's everchanging weather. The earth is mostly blue because its large surface area of oceans. The surface area of the bodies takes up 70 percent of earth's total surface area while the land only takes up 30 percent.
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hypertextbook.com/facts/2001/DanielChen.shtml
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Why the Earth's rotation rate is slowing. ... Despite all this confusion, the Earth's rotation is in fact slowing down. Eventually, the Earth's rotation will slow down so much that the bulge will line up exactly between the centers of the Earth and the Moon.
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www.badastronomy.com/bad/misc/tides.html
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; PIA04378: Seasonal Changes in Earth's Surface Albedo; ... About 50 million square kilometers of the Earth's terrestrial surface undergo a transition each year from freeze to thaw, thus setting off a series of global biospheric processes. Much of this activity can be detected by the temporal changes in the amount of...
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photojournal.jpl.nasa.gov/catalog/PIA04378
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