a. Water form a delta b. Wells Our basic needs c. Rivers Underground water d. Rain Water cycle e. Dam Main source of water on earth f. Evaporation and condensation Multipurpose Projects g.Canals Irrigation h. Tube wells Channels of water
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Answer:
a. A river delta is a landform created by deposition of sediment that is carried by a river as the flow leaves its mouth and enters slower-moving or stagnant water. This occurs where a river enters an ocean, sea, estuary, lake, reservoir, or (more rarely) another river that cannot carry away the supplied sediment.
b. The first and most basic of all needs are those to do with physical survival. This is the need for food, drink, shelter, sleep and oxygen. If a person cannot satisfy this basic survival need it dominates their interest and concern.
c. Water that collects or flows beneath the Earth's surface, filling the porous spaces in soil, sediment, and rocks. Groundwater is formed due to rain and melting of snow, it is also a source of water for aquifers, springs, and wells.
d. The water cycle describes how water evaporates from the surface of the earth, rises into the atmosphere, cools and condenses into rain or snow in clouds, and falls again to the surface as precipitation.
e. A dam is a barrier that stops or restricts the flow of water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability.
f. Evaporation and condensation are two processes through which matter changes from one state to another. Matter can exist in three different states: solid, liquid, or gas. In evaporation, matter changes from a liquid to a gas. In condensation, matter changes from a gas to a liquid.
g. Irrigation canals are the main waterways that bring irrigation water from a water source to the areas to be irrigated. ... An open canal, channel, or ditch, is an open waterway whose purpose is to carry water from one place to another. Channels and canals refer to main waterways supplying water to one or more farms.
h. A tube well is a type of water well in which a long, 100–200 millimetres-wide, stainless steel tube or pipe is bored into an underground aquifer. The lower end is fitted with a strainer, and a pump lifts water for irrigation. The required depth of the well depends on the depth of the water table.
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