Air bubbles are expelled from clay through a ______ process

Kneading is the process of pressing and folding clay repeatedly. This action squeezes out air bubbles trapped inside the clay.

Air bubbles in clay cause problems during firing. When heated, trapped air expands and can explode, cracking or destroying the pottery.

Potters knead clay like bread dough before shaping it. This essential step ensures smooth, bubble-free clay that will fire successfully.