Archiv für August 2010

Aug

31

2010

Polar Ice Caps Melting: A Global Warming Effect

Abgelegt in global warming

Global warming has been in the news a lot lately. While some people argue whether or not the phenomenon is man-made, the evidence of global warming effects is undeniable.

Polar ice caps melting
According to NASA & The Natural Resources Defense Council, more than 20% of the polar ice cap has melted away since 1979. The melting appears to be accelerating. 19 of the 20 hottest years on record have occurred since the 1980s. The North and South poles feel these global warming effects most acutely – this is reflected in the melting of the polar ice caps and the rapid crumbling of the glaciers. (more…)

Aug

12

2010

The Greenhouse Effect

The greenhouse effect is fairly basic science, simple enough in principle to explain in elementary science curriculum. Sunlight passes through the transparent glass of a greenhouse roof. When it reaches an opaque surface, some of the energy is converted to heat which cannot escape as readily. As a result, temperatures increase inside the greenhouse. In the model, atmospheric gasses act like a glass roof and elevate the Earth’s temperature. (more…)