Becouse the globe is round
a sphere is called a sphere because , well , its just a other name for a ball such as the earth.
The sphere on earth that contains water, and I believe is the largest on the Earth's surface is the Hydrosphere.
The sphere that we all live on is called the Earth. (It is not a perfect sphere, but close enough)
a Hemisphere
The Earth's outermost sphere is the Lithosphere. It's the rigid outermost shell of the Earth.
The Moon
This could be the magnetosphere, the atmosphere, or the biosphere, depending on your needed reference frame.
Hemisphere.
It is called the atmosphere.
The sphere of metal inside Earth is called the Earth's outer core. It is primarily composed of iron and nickel and plays a crucial role in generating the planet's magnetic field.
half of a sphere is a hemisphere
Half of a sphere is called a "hemisphere". For example, on Earth, the northern hemisphere is everything north of the equator.