A "hemisphere" refers to half of a sphere, often used to describe the Earth. The planet is divided into two main hemispheres: the Northern Hemisphere and the Southern Hemisphere. The equator serves as the dividing line, with the Northern Hemisphere containing countries like Canada and Germany, while the Southern Hemisphere includes places like Australia and Brazil. In addition to geographical contexts, the term "hemisphere" can also apply to the human brain. The brain is divided into the left hemisphere and the right hemisphere, each responsible for different functions. The left hemisphere typically handles language and logic, while the right hemisphere is more involved in creativity and spatial awareness.