what are the physical feature of the earth?
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physical features are stuff like mountains, lakes, deserts, islands, etc.
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The circumference of the earth at the equator is 24,901.55 miles (40,075.16 kilometers).\nBut, if you measure the earth through the poles the circumference is a bit shorter - 24,859.82 miles (40,008 km). This the earth is a tad wider than it is tall, giving it a slight bulge at the equator. This shape is known as an ellipsoid or more properly, geoid (earth-like).
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a good article about Earth science from Wikipedia.\nhttp://en.wikipedia.org/wiki/Earth_science\n\nsuch questions you should check wikipedia before using Yahoo answers.
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Water! Most of the earth is covered with water.
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1. earth's tilt\n2. earth rotation\n3. earth revolution
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the three properties of earth science are gas, liquid, and, solid. wind (or air moving quickly) is a gas.
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The inner core of the Earth is composed of solid metal (almost a pure alloy of iron and nickel) and extends from the center of the Earth to a radius of about 1220 kilometers (about 758 miles).  \n\nThe outer core is a 2260 km-thick (~1404 mile) shell of molten iron-nickel that surrounds the solid inner core.\n\nFor comparison, the Earth's average radius (it's not a perfect sphere) is 6371 km, so the inner core extends 1220/6371*100 = ~19% of the whole radius of the Earth.
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Earth's Atmosphere\nThe Earth is surrounded by a blanket of air, which we call the atmosphere. It reaches over 560 kilometers (348 miles) from the surface of the Earth, so we are only able to see what occurs fairly close to the ground. Early attempts at studying the nature of the atmosphere used clues from the weather, the beautiful multi-colored sunsets and sunrises, and the twinkling of stars. With the use of sensitive instruments from space, we are able to get a better view of the functioning of our atmosphere.\n\nLife on Earth is supported by the atmosphere, solar energy, and our planet's magnetic fields. The atmosphere absorbs the energy from the Sun, recycles water and other chemicals, and works with the electrical and magnetic forces to provide a moderate climate. The atmosphere also protects us from high-energy radiation and the frigid vacuum of space.\n\nThe envelope of gas surrounding the Earth changes from the ground up. Four distinct layers have been identified using thermal characteristics (temperature changes), chemical composition, movement, and density\n\nComposition of the Atmosphere\nThe atmosphere is primarily composed of Nitrogen (N2, 78%), Oxygen (O2, 21%), and Argon (Ar, 1%). A myriad of other very influential components are also present which include the water (H2O, 0 - 7%), "greenhouse" gases or Ozone (O, 0 - 0.01%), Carbon Dioxide (CO2, 0.01-0.1%),\n\n\nLayers of atmosphere\n\nThe atmosphere is divided into five layers. It is thickest near the surface and thins out with height until it eventually merges with space. \n\n1) The troposphere is the first layer above the surface and contains half of the Earth's atmosphere. \nThe troposphere is where all weather takes place; it is the region of rising and falling packets of air. The air pressure at the top of the troposphere is only 10% of that at sea level (0.1 atmospheres). There is a thin buffer zone between the troposphere and the next layer called the tropopause\n\n2)The Stratosphere and Ozone Layer\nAbove the troposphere is the stratosphere, where air flow is mostly horizontal. The thin ozone layer in the upper stratosphere has a high concentration of ozone, a particularly reactive form of oxygen. This layer is primarily responsible for absorbing the ultraviolet radiation from the Sun. The formation of this layer is a delicate matter, since only when oxygen is produced in the atmosphere can an ozone layer form and prevent an intense flux of ultraviolet radiation from reaching the surface, where it is quite hazardous to the evolution of life. There is considerable recent concern that manmade flourocarbon compounds may be depleting the ozone layer, with dire future consequences for life on the Earth\nMany jet aircrafts fly in the stratosphere because it is very stable. \n\n3)Mesosphere\nThe mesosphere starts just above the stratosphere and extends to 85 kilometers (53 miles) high. In this region, the temperatures again fall as low as -93 degrees Celsius as you increase in altitude. The chemicals are in an excited state, as they absorb energy from the Sun. The mesopause separates the mesophere from the thermosphere.\n\nThe regions of the stratosphere and the mesosphere, along with the stratopause and mesopause, are called the middle atmosphere by scientists. This area has been closely studied on the ATLAS Spacelab mission series. Meteors or rock fragments burn up in the mesosphere.\n\n4)Thermosphere\nThe thermosphere starts just above the mesosphere and extends to 600 kilometers (372 miles) high. The temperatures go up as you increase in altitude due to the Sun's energy. Temperatures in this region can go as high as 1,727 degrees Celsius. Chemical reactions occur much faster here than on the surface of the Earth. This layer is known as the upper atmosphere.\n\nThe upper and lower layers of the thermosphere will be studied more closely during the Tethered Satellite Mission (TSS-1R).\n\n\n5) exosphere\nThe exosphere starts at the t
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Land is rocks, minerals, and soil all in one to form the planet's surface. (excluding the surface covered by water.) The factors of land are: It can be moved and reshaped (in its mud form), It absorbs water and it holds vegatation down. Land can be increased by spreading out the hills to cover more surface, which would require covering up water.
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Branches\nThe physical sciences include:\n\nAstronomy, the study of the universe beyond the atmosphere of the Earth. \nChemistry, the science dealing with the composition of substances, their interactions with energy and each other. \nMany of the earth sciences, including: \nGeology, the study of the planetary structure of Earth and the physical processes which shape it. \nHydrology, the study of the movement and distribution of water across the Earth's surface. \nMeteorology, the study of weather patterns and other atmospheric phenomena. \nOceanography, the study of the ocean as a physical system \nPhysics, the quantitative science dealing with matter and energy.
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The total surface are of the Earth is 510,065,284.702 km² or 51,006,528,500 hectares.  The land surface area is 148,939,063.133 km² or 14,893,906,300 hectares
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longtitude, latitude, topography etc
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See the "physical characteristics" section on:\n\nhttp://en.wikipedia.org/wiki/Saturn_(planet)
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Geology is the study of the earth and its substances.
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Geographers identify eight major physical regions of the United States. The physical features found include snowcapped mountains in the west; fertile, rolling plains in the center; and smoothly formed mountains in the east.
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Latitude, Ocean currents, Winds, Elevation, Relief and Nearness to water.
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Earth is composed of five main divisions or layers:\natmosphere, crust, mantle, outer core, and inner core.\n\nAstronomer: n. a scientist who specializes in astronomy, or the study of space.\n\nCrust: n. outer most layer of rock on Earth; the portion of Earth's surface with which we are most familiar; it is hard and brittle.\n\nMantle: n. the layer of the earth located below the crust, plastic in character and composed primarily of Fe and Mg.\n\nOuter core: n. the layer of the earth between the mantle and the inner core; theorized as liquid and comprised primarily of molten metal, mostly nickel.\n\nInner core: n. solid, inner-most portion of Earth.