Human Impact

Human impact is the impact humans make in an environment.


  • Deforestation is the clearing of Earth's forests on a massive scale. Which often results in damage of the land's quality.
  •  30 percent of the Earth is still covered in land, but broad strips the size of Panama  are lost each and every year. 
  •  Forests are cut down for many reasons. Most of them relating to money, or people needing to provide  for their families. The biggest reason is agriculture. Farmers cut forests to provide more room for planting crops or for grazing livestock.
  •  Deforestation has many negative effects. The loss of habitat for millions of species is the most dramatic impact.  
  • Deforestation also effects climate change.Trees help the water cycle by returning water vapor back into the atmosphere. Without trees to fill these roles, many former forest lands can quickly become barren deserts.

Chernobyl Disaster

  • The Chernobyl incident started in April 1986 near the town Pripyat in Ukraine
  • The Chernobyl disaster was the aftermath of a flawed Soviet reactor design with serious mistakes made by the plant operators
  •  The accident destroyed the 4th reactor which killed about 30 operators and firemen within 3 months, and caused many deaths later on
  • The accident released fire and radioactive smoke into the air
  • About 1,000 people were greatly exposed to the radioactive air on the day of the accident
  • And over 200,000 workers were exposed the year after the accident
  • Many people have relocated, but currently 5 million people live in the contaminated areas

The Shrinking of the Aral Sea

  • Many decades ago the Aral Sea was the world's 4th largest body of inland sea
  • But, irrigation has been quickly shrinking the sea
  • In 1996, the Aral Sea had split into a small northern section and a larger southern section
  • Many other divisions has been happening since then
  • Over the years the Southern Aral Sea's eastern part was becoming shallower until that section was completely gone
  •  As the Aral Sea began to dry up the communities that had depended on the Aral Sea began to collapse
  • The salty water that had been left behind began to pollute the soil
  • The salty dust blew off the lake bed and flew on to the soil degrading it
  • In effort to save some of the lake, Kazakhstan built a dam between the northern and southern parts of the Aral Sea. 

Environmental Impact

How the environment has an impact on people


  • Monsoons are seasonal downpours of rain that are located in India , China, Japan, and Southeast Asia
  • They are often associated with rainy seasons in the tropics and the subtropics
  • A weak monsoon season may cause droughts, crop failures, and many struggles for people and wildlife
  • However, if there is a heavy monsoon season, it might cause massive floods that might kill thousands of people
  • Monsoons occur in the response of the Sun's heating in the atmosphere

The Ring of Fire

  •  The Ring of Fire is a string of active volcanoes which have seismic activity (earthquakes) around the edges of the Pacific Ocean
  • The Ring of Fire is actually shaped like a horseshoe instead of a circle
  • It's a string of 452 volcanoes that stretch from the south tip of South America, along the coast of North America, across the Bering Strait down through Japan, and into New Zealand
  • The Ring of Fire is the result of tectonic plates
  • Tectonic plates are huge pieces of the Earth's crust
  • Most tectonic activity that occurs in Ring of Fire, occurs in these geologically active zones
  • The Ring of Fire is also has hot spots,which are  areas that are deep in the Earth’s crust from where the heat rises

  • Magma, often pushes through cracks in the crust to form volcanoes

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by snehajoseph


Public - 10/7/16, 5:07 PM