Sign up now
to enroll in courses, follow best educators, interact with the community and track your progress.
The Water Cycle - how it works?
7,900 plays

Learn more about what the water cycle is and how it works.

Unacademy Bytes
Daily Trivia

Unacademy user
sir what is the meaning of "with replacement"
Ashish Bajpai
8 months ago
please watch permutation & combination first , u will understand it , replacement means , putting back.what you have taken out , in that case no of favorable case does not decrease.
Ma'am please upload something which is needed for present generation of youth and present social scenario. Water conservation would be a better topic rather than water cycle. Use of buckets to wash vehicles instead of pipe wash and use of buckets in toilets instead of flush tanks can help in conservation. Now that's what is needed. Not what is already learnt in school
::: Water Cycle (Hydrological Cycle) ::: # This cycle is powered by the Sun during two processes Condensation and Evaporation. # Oceans contribute to 86% of water evaporation. # Conservation of Water: water just changes its form. # Jargon: Aquifers, Artesian wells, Unconfined Aquifers (Rivers etc.: where water pressure equals to atmospheric pressure), Confined Aquifers (ground water) and Precipitation # Notes: :: 1 billion people (17%) doesn't have access to safe water. :: Water distribution is not uniform across the countries and hence UNICEF, Water Aid are striving to provide safe water to the Public of Asean and African countries.
I request you to make a video explaining the cruelty done by British on innocent Indians after the end of revolt of 1857.
Thanks you for the lecture men. I requests you to make a lecture on how wether conditions or topography affect precipitation especially “how trees density affect the rain fall?”
  1. ACCESS TO SAFE WATER Global Clean Water Supply as % Population 1 in 6 people in the world have no access to safe water 41% AFGHANISTAN 3,400,000 people die each year as a result of MALI NIGER CHAD GUINEA water related diseases NIGERIA ETHIOPI EQGUINEA SOMALIA PAPUA NEW GUINEA FUI HIGHEST LAST RECORDED CHOLERA DEATH RATES MOZAMBIQUE MADAGASCAR PAPUA NEW GUINEA CHAD 830,000 48% 330,000 43% MALI 111 160,000 GUINEA 140,000 MOZAMBIQUE60,000 43%



  4. ater never really goes away. It just changes form


  6. THE SUN

  7. When the sun heats the surface of water, it gets evaporated and ends up in the atmosphere as water-vapor. Evaporation

  8. When it cools and rises, it becomes clouds, which eventually condense into water droplets. Clouds

  9. Depending on the temperature of the atmosphere and other r precipitates as rain, sleet, hail ors Precipitation

  10. The precipitation that hits the ground becomes runoff, which can accumulate and freeze into snow caps or glaciers. Run off

  11. GROUNDWATER Unconfined aquifers have the water table, or the surface where water pressure equals atmospheric pressure, as their upper boundaries Aquitard- Water table Aquifer Aquitard Artesian well

  12. Human activities that alter the water cycle include: Agriculture Industry Alteration of Chemical composition of the atmosphere Construction of dams Deforestation & Afforestation Removal of ground water Water abstraction from rivers Urbanization