2026 4th Grade MCA Math Vocabulary Practice Test – Complete Exam Prep

Think about the roots of the word: semi- means half and sphere means a round ball. Put together, hemisphere names half of a sphere. It’s the standard term you’d use for the top half or bottom half of the globe, like the Northern Hemisphere or Southern Hemisphere. Hemispheric describes something related to a hemisphere, not the half itself, and semisphere is an uncommon variant. Sphere means the entire ball, not half.