What is a hollow: definition, species

All unevenness of land and oceans, which differ in age, origin, size and shape, is called a relief. Its main forms are the ridge, hollow, mountain, saddle and hollow.

Definition

What is a hollow? This is an elongated depression in the terrain. Lines that are located at its lowest points are called thalwegs (streams). The lateral sides of the hollow form stingrays, which terminate in the brow. Its bottom drops gradually.

This lowering of the surface of the earth arises mainly due to erosion, has an average depth of three to fifteen meters. The length can reach up to one and a half kilometers.

What is a hollow? This lowland, which is the result of impact on the ground thawed and torrential water flows. At the same time there is suffusion - the process of carrying out by ground streams of the smallest particles of minerals. Unevenness is characteristic of steppe and forest-steppe zones. If the blur continues, then after a while it will turn into a beam.

What is a hollow? This is a kind of "trough", the bottom of which is flat, swampy, and the slopes are turfed, or covered with bushes and trees.

Varieties

Among the types of hollows the following geographical objects are distinguished:

1. Ravine. It is a narrow hollow, characterized by naked and steep sides.
2. Gorge. It is considered a ravine in the highlands.
3. Valley. Serves as a wide elongate depression, the slopes of which are shallow.
4. Beam. It is a large uneven surface of the earth, much larger in size than the ravine, which slopes cover a variety of vegetation.

On the plan of the terrain, the hollow is shown with the help of concave contours, depicted in the direction of the lowering of the relief. Also its varieties are holes, canyons and so on.

Grammar

What is a hollow? It is a word that must be remembered to use correctly, because it is a dictionary word. The letter "o" in the first syllable will not be verified by any spelling rule.

The word "hollow" is a noun. It is an inanimate object related to the feminine gender, the first declension. To him you can choose the following synonyms: the hollow, the log, the buerac, the gully, the ravine, the yaruga, is outlined.

Thus, the meaning of the word "hollow" becomes extremely clear. This is an elongated depression on the surface of the earth, the bottom of which gradually decreases. He has three characteristic lines - two edges and thalweg. This form of relief is found in the forest-steppe and steppe zones.