My Day At the Museum

Today at the Museum was very fun!!!!!! My group included Richelle Hudson and Justin Henderson(just two of my close friends at La Guardia so FAR........) At the museum we found a lot of facts that support Al Gore's theory!!!!!!!! While visiting the Gottesman Hall of Planet Earth we saw all of the evidence, they were supported by Movies,Touch screen computers, and exhibits that allowed us to actually TOUCH them!!!!!!

Some of the facts included:

• Greehouse gases-solar radiation warms the earth's surface. Some of the heat is radiated back to the atmosphere, where it is trapped by greenhouse gases. The most important greenhouse gas is water vapor. Without it, the earth's average temp. would be below freezing. With it, the planet is warm enough to support life over most the surface.



• The atmospheric layers are: Thermosphere, Mesosphere, Stratosphere, Trophosphere.





• Climate recorded in Ice- Glacial ice records the climate of past ages. The Composition of ice itself and of the air bubbles and dust trapped in it record changes in temperature, humidity, atmospheric circulation,volcanic activity,extent of sea ice and even atmospheric pollution by human activity.





• Evidence from trees- Tree rings are sensitive indicators of annual climate. Thick rings indicate rapid growth during warm,wet years. Thin rinngs represent slow growth, indication of cold dry years. By matching the overlapping sequences from progressivley older trees, a complete tree-ring chronology can be extend back thousands of years.





• Flood Basalts- Among the major out pourings of lava are huge plains as flood basalt provinces. The enoroumus amounts of volcanic gases injected into the atmosphere may have led to climate changes that cause global mass extinction events.




• Earthquakes are where plates collide. Suduction zones are places where two of the earth's plates collide, with one descending beneath the other. many earthquakes occur along these zones, usually near the top of the decsending plate, where it meets the overlying mantle.