week 25
a narrow pass or passage, either in a mountain or in the ocean, between continents or other portions of land
Strait
the cyclical rise and fall of sea water, resulting from the gravitational attraction force between the earth and the moon
tide
tunnel
an opening in the surface of the earth or in a mountain from which smoke, flames, stones, lava, or other substances are ejected
Volcano
a moving swell or volume of water usually, a swell raised and driven by wind
waves
spongy land; low ground filled with water; soft, wet ground
swamp
wood that is proper for building or for tools, utensils, furniture, ships, and the like
Timber
a vast treeless plain in the artic region in which the ground is perpetually frozen
tundra
a hollow or low tract of land between hills or mountains
valley
a large, thick collection of trees; a forest
woods
a prairie; a grassy plain characterized by a lack of tress and a shortage of rain
Steepe
the altitudinal border above which trees do not grow
against the current
upstream
the process of growing plants by means of nourishment derived from the earth or from water and air and received through roots and leaves vegetables or plants in general
vegetation
an area that drains into a river; the divide that leads streams of water in two opposite directions
watershed
a current of water like a river, brook, or rivulet; a current of water in the ocean
Stream
a raised bank of earth with sloping sides
terrace
the detailed description of a particular place, city, town, manor, parish, or tract of land
Topography
a fall or perpendicular descent of the water of a river or stream; a cascade; a cataract
waterfall
an eddy of water; a vortex or gulf where the water moves round in a circle
whirlpool
the highest point of a mountain
Summit
a large, flat section of land higher than the surrounding area
Tableland
smaller streams or rivers flowing into a larger body of water
Tributary
a tract of low ground or of land between hills; a valley
vale
a perpendicular bank, mound, timber, or stone and earth, raised on the shore of a harbor or extending some distance into the water, for the convenience of lading or unlading ships and other vessels
wharf