Ice Ages Overview
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Questions and Answers

What is one of the factors that can influence an ice age?

  • Elevated Sun energy output
  • Higher levels of greenhouse gases
  • Increased volcanic activity (correct)
  • Stable ocean currents
  • During which ice age was the Earth possibly covered in ice all the way to the equator?

  • Karoo
  • Quaternary
  • Andean-Saharan
  • Cryogenian (correct)
  • What is the current period the Earth is in, within the Quaternary ice age?

  • Paleozoic period
  • Mesozoic period
  • Holocene period (correct)
  • Pleistocene period
  • Which extinct mammal was from the last ice age?

    <p>Saber-toothed tiger</p> Signup and view all the answers

    What can cause the Earth to cool leading to an ice age?

    <p>Low levels of carbon dioxide in the atmosphere</p> Signup and view all the answers

    Which factor plays a significant role in introducing huge amounts of carbon dioxide into the atmosphere?

    <p>Volcanic activity</p> Signup and view all the answers

    What defines a glacial period within an ice age?

    <p>A cold period with expanding glaciers</p> Signup and view all the answers

    How do scientists determine when ice ages have occurred?

    <p>By examining the geology of the land and fossil evidence</p> Signup and view all the answers

    What is the current stage of the Quaternary ice age?

    <p>Interglacial period</p> Signup and view all the answers

    During an ice age, which areas were covered by giant ice fields and glaciers?

    <p>North America and Northern Europe</p> Signup and view all the answers

    Which geological feature can only be explained by the movements of giant glaciers?

    <p>Presence of valleys and fjords</p> Signup and view all the answers

    What was one of the longest ice ages in Earth's history?

    <p>Huronian ice age</p> Signup and view all the answers

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