The center of the earth, known as the "inner core" is a solid sphere that consists of an iron-nickel alloy.
you are part of wich sphere of Earth
The water sphere of earth is the HYDROSPHERE.
Originally it was a rotating liquid mass, which led to a sphere which is swelled at the equator and flattened at the poles.
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celestial sphere
earth is a sphere... hemisphere means half of a sphere...
The sphere of earth which contains gases is called the Atmosphere.
The earth is shaped as a sphere.
The Earth's outermost sphere is the Lithosphere. It's the rigid outermost shell of the Earth.
Actually, Galileo wasn't the person who discovered that the earth was a sphere.
a sphere is called a sphere because , well , its just a other name for a ball such as the earth.