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Updated: 2/6/2021
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  • Climate the weather conditions prevailing in an area in general or over a long period.
  • Example of different global climates throughout Earth’s history:
  • To find out about past climates, Geologist look for Earth's natural environmental records.
  • the clues are buried in sediments at the bottom of the oceans, locked away coral leaves, frozen glaciers and ice caps, preserved in the ring of tree.
  • Milankovitch cycles
  • the shape of earth's orbit around the sun goes from a circular to a oval form every 100.000 years. This causes ice ages, over millions of years we've had many.
  • Milankovitch cycles are slight shifts in earth's orbit. The gravitational pull of the sun, the moon, and other planets makes Earth’s axis wobble every 20,000 years. the tilt of the earth also shifts every 40,000 years.
  • Volcano activity
  • A volcano erupting can affect the climate many way such as: Temperature dropping due to lack of sunlight caused by volcanic ashes covering the atmosphere. They can poison creatures and food supplies due to acid rain and toxic elements from the volcanoes. Lastly, they can cause air pollution from volcanic ashes.
  • Ocean Currents
  • Ocean currents are the continuous, predictable, directional movement of seawater driven by gravity, the Coriolis Effect, and water density. The weather is affected by this because ocean current act as conveyer belts of warm and cold water, sending heat toward the polar regions and helping tropical areas cool off, thus influencing both weather and climate