Top 10 movies on theaters box office July 2015 third weekend. Check out the list of the top 10 movies on the U.S. and Canada theater box office during July's Third weekend.
If conditions are right, the fused sand forms long hollow tubes called fulgurite. The term comes from the Latin word fulgur, which means lightning. Although lightning strikes earth at least a million times each day, only rarely does fulgurites form. Fulgurites are usually found beneath the surface of the sand, generally decreasing in diameter and sometimes branching outs as they descend.
Wind can also bounce material along the surface, analogous to bed load in streams, causing abrasion. Wind abrasion is nature's version of sandblasting. It produces smooth surfaces related to the wind direction and is most effective close to the ground. Next time you drive outside of Las Vegas, look at the telephone poles. They have sheet metal wrapped around their bases to protect against destruction by wind abrasion.