ГІПСОМЕТРІЯ РІВНИННИХ ТЕРИТОРІЙ УКРАЇНИ У КАРТОГРАФІЧНИХ РЕСУРСАХ ТА ПІДРУЧНИКАХ З ГЕОГРАФІЇ

The article is devoted to substantiating the need to clarify elevation characteristics of the highest peaks of main lowlands and hills of the plain territory of Ukraine and to map them in new Geography textbooks compiled for the 8th graders of secondary educational institutions. It is the new textbooks for this grade that teams of authors are currently working on; therefore, it is important that educational publications already contain updated information and guide learners in practical tasks to find and determine elevation characteristics of the Earth’s surface using modern publicly available geoinformation resources. The main research methods used to obtain reliable data included comparative analysis of data from textual reference and educational publications, large-scale cartographic sources of the mid-20th century, small-scale maps and atlases of the early 21st century and modern geoinformation resources, as well as the results of personal observations during field expeditions. As a result of the conducted research, the necessity to correct data regarding the highest point of Ukraine’s lowland territory, which is the peak of Mount Klyva in Maidan Hills, which are part of the Precarpathian Upland (855 meters above sea level), has been substantiated. The absolute elevations of the highest points, determined by modern tools in Google Planet Earth resource, are as follows: the Polissian Lowland within the Slovechansko-Ovruch Ridge, in the vicinity of the village of Horodets (332 meters); the Transcarpathian Lowland (Mount Kuklia, 367 meters, located within the Berehiv Upland); the peak of Mount Kolyha (369 meters) on the local Povchansk Upland – the highest point of the Volyn Upland; the northern part of the Podilsk Upland – the Hologoro-Kremenets Upland (Mount Kamula, 482 meters); Mount Berda (526 meters) – the highest point of the Volyn-Podilsk Upland and the entire East European Plain within the territory of Ukraine; the Dnieper Upland (Lyulyntsi Hill, 332 meters); the Central Russian Upland within the territory of Ukraine (251 meters). During the study, assumptions have been made about possible reasons that could have caused inaccuracies in hypsometric data.