Prakriti evolves in response to the Purusha and its internal elements undergo further change forming the Pancha Maha Bhootas or the Five Great Elements. The physical universe with which we are familiar mainly consists of the Pancha Mahabhutas namely Akash (Ether or Space), Vayu (Vayu), Agni (Fire), Jal (Water) and Prithvi (Earth). Nature is three-dimensional and unconscious and since Sat, Raja and Tama are three qualities of nature, the world is the direct result of these three Gunas.
In Samkhya philosophy, Purusha is the immovable spiritual cosmic principle. It is pure consciousness that is unattached and unrelated to anything else. Purusha is passive, immutable, eternal and pure and gives birth to life through association with Prakriti (Matter).