What are the ocurrences of the ice age? Its for a project.

Expert Answers

An illustration of the letter 'A' in a speech bubbles

Well, there are several ice ages along the geologic time scale of the Earth.  The most recent one occured about 11,000 years ago.  The term "Ice Age" refers to a period of time when temperatures on the Earth were markedly lower than they are presently, resulting in more pack ice across the oceans and at the northerly and southerly extremes of the Earth.  This lowering of temperatures could be caused by a lowering of the greenhouse gases in the atmosphere.  It could also be caused by a blockage of the sun's radiation, as is put forth by several theories.  In any event, evidence exists of major glacial movement and deposits that are not in existance today.


Approved by eNotes Editorial Team

We’ll help your grades soar

Start your 48-hour free trial and unlock all the summaries, Q&A, and analyses you need to get better grades now.

  • 30,000+ book summaries
  • 20% study tools discount
  • Ad-free content
  • PDF downloads
  • 300,000+ answers
  • 5-star customer support
Start your 48-Hour Free Trial