knapped

"He snapped his stick in anger."

"If the vase falls to the floor, it might break."

"The fracture in the windowpane made a loud, sharp sound. "

"Except for one or two days a year, he usually walks to work."

"Asphalt, composed of oil and sand, is a widely used material for roads."

"The ancient tools were made of obsidian, a black, volcanic glass. "

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"The archaeologist carefully brushed dirt away from the ancient pottery. "

"The geologist studied the rocks in the park. "

"The broken glass shard had a curved, conchoidal fracture, resembling the inside of a seashell. "

"The children excitedly opened their birthday presents. "

"As a child, my favorite candy was peanut brittle."