When was the first ice age?

Answer

According to the Utah Geological Survey, the first ice age occurred over 2 billion years ago. Ice ages are long periods of time when global temperatures are cold and many areas of the Earth are covered by continental ice sheets and alpine glaciers.

Ice ages can last tens of millions of years. There have been at least five major ice ages in the history of the Earth. Many factors can cause an ice age, including changes in atmospheric and ocean circulation, varying concentrations of atmospheric carbon dioxide or even volcanic eruptions. The 21st century Earth is currently in an ice age that began approximately 3 million years ago and peaked about 20,000 years ago.

Reference:
Q&A Related to "When was the first ice age?"
Scientists have some good evidence that the first Ice Age happened 2.3billion years ago. They believe that at six continents continents were frozen over with ice at that time. They
http://www.ask.com/web-answers/Science/Nature/when...
1. Label a world map with the seven continents. Show on a globe how the continents encircle the Earth. Pinpoint the country of Russia in eastern Asia and the state of Alaska on the
http://www.ehow.com/how_7454521_teach-ice-age-land...
I think 2002.
http://wiki.answers.com/Q/When_did_the_first_ice_a...
The ice on Antarctica and Greenland is enough to say we are in an ice age. This is what is meant in. John Voelker's answer. The last glacial era was about 12,000 years ago, but sometimes
http://www.quora.com/When-will-the-next-ice-age-ha...
Explore this Topic
Scientists belive there were tree distinct ice ages. One ice age occurred approximately 600 million years ago, the second 275 million years ago and the most recent ...
The last Ice Age, known as the Pleistocene Epoch, began almost 1.8 million years ago and lasted until approximately 11,700 years ago. During this time, massive ...
The date of the first built library is unknown due to it being built during the Biblical ages. It is said that the location of the first library was at Nineveh ...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com