b'because of the deposits left by glaciers.This area, the Till Plains, is a richfarming region. The soil of this region isdeep and good for growing crops likecorn and soybeans. A large deposit ofmaterial can be found in Logan County,which is also the highest point in Ohio.Graphic (J) Campbell Hill is 1549 feet above sealevel. It is interesting to discover thatwhere the glaciers began to various the lowest point in Ohio is also in the Tillplaces in the Ohio region. The surface of Plains region. Only 455 feet above sealand was changed as the glaciers moved level, this low point can be found alongfarther and farther south. These mate- the Ohio River near Cincinnati.rials were deposited as the glaciers The Lake Plains are found in thebegan to melt. northwestern part of Ohio and alongThese changes in the surface of Lake Erie. These flat plains were formedOhios land caused five different natural by glaciers depositing sand and soil nearregions to be formed [see graphic (J)] . what used to be a much larger lake, LakeA mix of soil and rock, called till, Maumee. Because that lake had beencovers most of the western half of Ohio larger, some of this area remained swampAlong the Ohio TrailOf course, I wasnt around when the glacierswere, but I think I can show you how they worked.You could try this experiment (and probably shoulddo it outside). First, freeze some water into alarge, flat shape. Then get a board, bigger than theice, and cover it with pebbles, sand, soil, or anyother material. Lay the board at a slight slant. Place the glacier at the top of the board. Leave it to melt and moveon its own. What happened to the: high places? What would a glacier do to hills? lighter materials? heavier materials? low areas on the board? What would a glacier do to valleys? land at the top of the board? land at the bottom?After doing this experiment, answer this question: In Ohio, which areawould be flatter: the glaciated or unglaciated area?page 3'