| A | B |
| oasis | restricted area in the desert which is made fertile by the presence of water |
| pass | a high gap or defile that ofers passage across a mountain range |
| piedmont | the name often applied to that region which extends along the foot of a range of hills or mountains |
| quarry | an open excavation in the earth, generally for the purpose of obtaining rock material |
| ranch | a tract of land used for grazing and rearing of domesticated animals such as cattle, horses and sheep |
| ravine | an elongated depression excavated by running water. larger than a guller smaller than a valley |
| reservoir | an area of stored water, usually made by damming a stream |
| ridge | often refers to the top line of hills or mountains |
| salt lake | a lake with a good amount of saalt due to excessive evapoationin relation to the inflow of fresh water |
| sand dunes | ridges of sand piled up by the wind |
| sound | a long water passage between an island an the mainland |
| strait | a narrow strtch of water conneting two extinsive areas of the sea |
| tableland | a broad platuea bounded by steep faces which lead abruptly down to sea or an adjoining lowland |
| timberline | a boundary line on a high mountain, above which trees do not grow because of cold tempatures. toward the poles the timber line is found at a progressively lower altitudes |