undulated

"You can create the color orange by mixing yellow and red."

"The motion of the train was slow, taking hours to reach the next town. "

"To separate out the chaff, early cultures tossed baskets of grain into the air and let the wind blow away the lighter chaff."

"They identified a burst pipe as the cause of the flooding."

"There are several species of wild flowers growing in this field."

"The gentle motions of the swing lulled the baby to sleep. "

"The new student, a gentle of the wealthy Rodriguez family, was warmly welcomed by the school. "

"The twins resemble each other."

"The children played in the soft grass of the park. "

"The breeze rustled the papers on her desk."

"The sun appeared from behind the clouds, casting a warm glow over the schoolyard. "

"She closed the curtains to block out the bright morning sun. "