| − | Rock that behaves like something between a [[liquid]] and a [[solid]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>
| + | '''Plastic rock''' is a rock that behaves like something between a [[liquid]] and a [[solid]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> |