Drag each tile to the correct box. Rebecca notices a huge crack in a large boulder in her garden. She realizes that the crack was caused by frost wedging. Place the steps of the frost wedging process in order. The freeze-thaw cycle continues to deepen the crack until the rock splits into two pieces. Rain water is stored in rock and seeps into a hairline crack during a rainfall. Because ice occupies more space than water, the ice wedges the crack open. Rainwater in the rock crack freezes into ice. The temperature falls below 0° Celsius.