10 Quiz questions on What is water, its
composition, sources, drought, flood, water pollution.please answer clearly
Answers
Answer:
1) Water
Water is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent).
2) It's composition
The composition of water is-
I) A water molecule is made up of two hydrogen atoms and one oxygen atom.
ii) A single oxygen atom contains six electrons in its outer shell, which can hold a total of eight electrons.
3) Sources of water
There are two main sources of water: surface water and groundwater. Surface Water is found in lakes, rivers, and reservoirs. Groundwater lies under the surface of the land, where it travels through and fills openings in the rocks.
4) Drought
A drought is a period of drier-than-normal conditions that results in water-related problems.When rainfall is less than normal for several weeks, months, or years, the flow of streams and rivers declines, water levels in lakes and reservoirs fall, and the depth to water in wells increases.
5) Flood
A flood is an overflow of water that submerges land that is usually dry. Floods are an area of study in the discipline of hydrology.
6) Water pollution
Water pollution is the contamination of water bodies, usually as a result of human activities. Water bodies include for example lakes, rivers, oceans, aquifers and groundwater.
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