Final answer:
The process of kneading clay to remove air pockets and make it pliable is called wedging, which is crucial for achieving the right consistency for modeling and sculpting.
Step-by-step explanation:
The process where clay is kneaded to work out pockets of air and make the clay easier to work is known as wedging. This is similar to the process of kneading dough, which requires strength in one's hands and arms to manipulate the clay into the desired shape. Achieving the right consistency is essential for the clay to maintain its form when creating a sculpture or pottery. Once the modeling process is complete and the clay item is formed, it can be decorated by various methods such as incising or glazing, before being fired in a kiln to harden and become more durable.