The Earth's [[shape]] is an [[oblate]] [[spheroid]]. This means it is basically a [[sphere]] but it [[wikt:bulge|bulge]]s around the middle. The [[circumference]] of the Earth is about 40,000 [[kilometer]]s; the average [[width]] of the Earth is about 12,700 km. The highest point on Earth is the peak of [[Mount Everest]] at 8,848 m above [[sea]] level. The lowest natural point is the bottom of the [[Mariana Trench]] at 10,911 meters below sea level. Because of the bulge at the middle or the [[equator]], the farthest point from the Earth's center is the top of [[Mount Chimborazo]] in [[Ecuador]].<ref name=ps20_5_16>{{cite journal | last=Senne | first=Joseph H. | title=Did Edmund Hillary climb the wrong mountain? | journal=Professional Surveyor | year=2000 | volume=20 | issue=5 | pages=16–21 }}</ref><ref name=lancet365_9462_831>{{cite journal | last=Sharp | first=David | title=Chimborazo and the old kilogram | journal=The Lancet | date=2005-03-05 | volume=365 | issue=9462 | pages=831–832 | doi=10.1016/S0140-6736(05)71021-7 }}</ref><ref name=tall_tales>{{cite web | url=http://www.abc.net.au/science/k2/moments/s1086384.htm | title=Tall tales about highest peaks | publisher=Australian Broadcasting Corporation | accessdate=2008-12-29}}</ref>
[[ឯកសារ:Earth-crust-cutaway-english.svg|thumb|right|A diagram of the inside of the Earth, showing the different layers.]]
