Students learned about constructive and destructive forces.

   Ms. Jackie Elsinger's 7th Grade science students have been learning about constructive and destructive forces that change the surface of the Earth. Destructive forces, such as wind and water, were demonstrated in a lab experiment.
  The students seen here were simulating wind erosion by blowing sand over rocks. Over long periods of time, the sand wears away the rock formations and change their shape.