The next question refers to This Mystery Rocks! by Cynthia Schlagel.
The sentences have been numbered to help you identify them more easily.
This Mystery Rocks! By Cyntha Schlagel
The Drifting Rocks are a strange phenomenon still unexplained by science.
2 Located in Death Valley, California, the rocks sit on hot, flat ground. Unlike
normal rocks, they have trails etched behind them as if they have traveled across
the sand. “Some trails are only a few feet. Ssome trails are over a half a mile long.
Each trail is as baffling as the next.
?The variety of rock movement has baffled scientists for decades. Some rocks
seem to roll as they move forward. 'Some take unexplainable routes. 10Large
ones have traveled past small ones that have stayed still. 11Some scientists
suggest that the rocks are pushed by wind. 12 others believe they slide on small
amounts of ice or mud. 135o far, research has not confirmed any theory.
Which sentence best identifies the main idea of paragraph two? (4 points)
Scientists are baffled by the different ways the rocks move.
Scientists are confused by the different ways the rocks move, and theories involving
wind, ice, and mud have not been confirmed.
Scientists have theories of how the rocks move.
The rocks have stumped scientists because some roll, some take unexplainable routes,
and some have traveled past ones that have stayed still, but scientists have theories that
the rocks are pushed by wind or that they slide on ice or mud.