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here is our power point on geography hope you like it

here is our power point on geography hope you like it

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geography geography Presentation Transcript

  • Forces of Change Madison Salem, David Smith, Joe Toennis
  • Volcanoes
    • A vent in the earth's crust through which lava, steam, ashes, etc., are expelled, either continuously or at irregular intervals.
    • Volcanoes can cause massive damage to an environment. It can cause many fires and deforestation. However it can also cause new islands to form for life.
    Hawaii Volcanoes National Park By: David Smith
  • Earthquakes
    • Sudden , violent movements of plates along a fault line are known as earthquakes
    • Environmental changes include movement destruction.
    Joe Toennis San Francisco
  • Water Erosion
    • The process by which the surface of the earth is worn away by the action of water, glaciers, wind, waves, etc.
    • Causes changes in earth’s surface such as deep hole’s etc.
    Madison Salem Western Australia
  • Wind Erosion
    • The movement of dust, sand, and soil from one place to another
    • Environmental changes include receding deserts.
    • Joe Toennis
    Grand canyon
  • Weathering
    • The process that breaks down rocks on earth’s surface into smaller pieces.
    • Physical Weathering occurs when large masses of rock are physically broken down into smaller pieces.
    • Environmental changes happen with physical weathering such as the wearing away of mountains, and formation of caves.
    Talus Slope Colorado Madison Salem
  • Weathering Cont…
    • Chemical Weathering changes the chemical makeup of rocks, transforming their minerals or combining them with new elements.
    Prince Edward’s Island, Canada Madison Salem
  • Glacial Erosion
    • The wearing down of the Earth's surface by glaciers. Rock debris at the bottom of a glacier scrapes and erodes the surface over which the glacier flows like a giant hugely heavy piece of sand paper.
    Glacial Erosion can cause damage to an environment by wearing down mountain tops. The icy path shown here is a moraine formed by a glacier in Switzerland. By: David Smith