geography
soil
the top layer of the earth, two metres thick
soil types
different kinds of soil particles. in the netherlands: sand, loess, clay, peat.
push moraines
sedimets pushed up by glaciers to form hills
dolmen
large structures, built of large rocks
boulder clay
an impermeadble layer, formed from rocks that were pulverised by ice sheets
parcels
land that is divided in different pieces, enclosed by ditches, trees or roads
sand
soil particles with a size of between 0.063 and 2mm
gravel
soil particles larger than 2mm
silt
soil particles smaller than 0.063mm