Is the world going to end in
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The document discusses various threats to Earth, categorizing them into internal problems like global warming and ozone depletion, and external issues such as solar storms and asteroid collisions. It details the causes and effects of ozone depletion and acid rain, including impacts on ecosystems, human health, and potential solutions. Additionally, it highlights the long-term dangers of cosmic events, pollution, and nuclear capabilities that could lead to catastrophic outcomes for humanity.
Is the world going to end in
- 1. RUMORS OF DOOMS DAY
- 2. Dooms day It is a final day of earth
- 3. Rumors of Earth Destruction SKYLABS HADRON COLLIDER ‘2012’
- 4. IMAGE OF A HADRON COLLIDER EXPERIMENT EQUIPMENT
- 7. What are the problems to our earth
- 8. THE PROBLEMS ARE CLASSIFIED INTO INTERNAL PROBLEMS EXTERNAL PROBLEMS
- 9. INTERNAL PROBLEMS GLOBAL WARMING OZONE DEPLETION ACID RAINS
- 10. EXTERNAL PROBLEMS SUN STORMS METEROIDS AND ASTEROIDS COLLISIONS SUN EXPLOSIONS
- 12. OZONE DEPLETION Reasons: CFC,HFC,VOC CFC Very stable Not be dissolved in rain water Not harmful to humans Sources for CFC AC, refrigerators and aerosols
- 13. EFFECTS OF OZONE DEPLETION On aquatic ecosystems Reduce the abundance of plankton Food stocks for fish Absorption of C02 On plants Damage to the plant cell DNA molecule Reduction in photosynthesis capacity Slower growth and smaller leaves
- 14. EFFECTS OF OZONE DEPLETION On people Skin cancer Premature aging of skin Cataracts and eye disorder Damage to Immune system
- 16. Generally rain water is acidic with ph value of 5.6 Reasons for acid rain SO2 , Nox (primary pollutants) Tiny water particles- capture suspended solid particles and gases- condensed back as acid rain
- 17. pH values of different substances
- 18. Sources Industries Automobiles Power production Effects On soil On forest On lakes On buildings
- 19. On soil Cation exchange Leaching of metals ions like ca, mg, k These ions are not available for tree growth Mobilize Al Prevents the roots taking up the ca Reduces the population of soil organisms Can mobilize the other toxic metals from insoluble to soluble like Hg, cr, Zn
- 20. On lakes Reduction of plankton population Fish can suffocate as their gill clogged with aluminum hydroxide On forest Falls on the leaves leaches the nutrients from them Removed at faster rate than the roots can resupply
- 21. On buildings
- 22. solutions Use low sulfur coal Low sulfur coal – 0-1% high sulfur coal – 2-4% Use scrubbers Fluidized bed combustion
- 23. Use scrubbers Removes 80-95% SO2 Certain types don’t remove nitrogen oxide Spray of water containing lime – calcium sulfate Costly and unit cost increases by 10-15%
- 24. Fluidized bed combustion Pulverized coal and lime stone is suspended by an upward blast of air Turbulent mixing of coal and air-combustion at lower temp- reduces the NOX Efficient burning-5% Removes 90% SO2 15-35 NOX
- 26. What is meant by Global Warming ?
- 27. The Increase In Average Temperature Of Earth is called global warming
- 29. Sun Storms : Solar experts from around the world monitoring the sun have made a startling discovery: our sun is in a bit of strife. The energy output of the sun is, like most things in nature, cyclic, and it’s supposed to be in the middle of a period of relative stability. However, recent solar storms have been bombarding the Earth with so much radiation energy, it’s been knocking out power grids and destroying satellites. This activity is predicted to get worse, and calculations suggest it’ll reach its deadly peak sometime in 2012
- 31. Asteroid collision : The Earth experienced a near-miss on 2013-jan-02 when asteroid 2012DD45 passed about 48,800 miles from Earth above the Indonesia .
- 33. EXPLOSION OF SUN : Our sun will not last forever. In about 5 billion years, it will expand into a red giant, and immerse the Earth. With a life expectancy less than two decades.
- 34. GAMMA RAY BURST : A type of colossal cosmic explosion could wipe out most forms of life on Earth. At least some of them are believed to occur when massive stars collapse and form black holes. They produce two cone-shaped beams of radiation from each pole that could fry life on nearby locations
- 35. Natural ways that the world may end: Increasing levels of pollution on Earth ending human life. Bacteria that is immune to all treatments. The nuclear powers in the world (Britain, China, France, India, Israel, North Korea, Pakistan, USA, etc.) have a sufficient number of warheads to raise the radiation level to an untenable degree.
- 39. THANK YOU CREATED BY M.GEETHABHARGAVA FUTURE ENGINEER 12002123,SECTION-19