3 sentences

1. 日本位于北半球。

   Rì​běn wèi​yú běi​bàn​qiú.

   Japan is located in the Northern Hemisphere.

   Source: Tatoeba

2. 地球被赤道分为北半球和南半球。

   dì​qiú bèi chì​dào fēn​wéi běi​bàn​qiú hé nán bàn​qiú.

   The Earth is divided into the Northern and Southern Hemispheres by the equator.

   Source: Dong Chinese Dictionary

3. 猎户座是北半球冬季最容易辨认的星座。

   liè​hù zuò shì běi​bàn​qiú dōng​jì zuì róng​yì biàn​rèn de xīng​zuò.

   Orion is the most easily recognizable constellation in the northern hemisphere during winter.

   Source: Dong Chinese Dictionary