A hemisphere is half of a sphere. The Earth is divided into two hemispheres: the Northern Hemisphere and the Southern Hemisphere. The equator is the imaginary line that divides the Earth into these two hemispheres.
The Earth is divided into two hemispheres, the Northern and Southern Hemispheres.
Noun: hemisphere.
Adjective: hemispheric.
Adverb: hemispherically.
The word "hemisphere" comes from the Greek words "hemi", meaning "half", and "sphaira", meaning "sphere". It was first used in English in the 16th century to describe one of the two halves of a sphere.
What is a hemisphere?
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