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    Powerpoint pres part 1 Powerpoint pres part 1 Presentation Transcript

    • Earth ScienceSecond Grade
      Ariel Kaiserman
    • Landforms
      Mountains
      Plains
      Plateaus
      Valleys
      Hills
    • Mountains
      • Tall, rough, pointy
      • Rocky mountains and Appalachian mountains
      • Animals: vultures, llamas, mountain goats
    • Plains
      Plains: vast, flat, no great changes
      Uses: growing crops, raising animals
      Animals: buffalo, prairie dogs, coyotes
    • Plateaus
      Elevated level land surrounded by steep slopes
      About 45% of Earth’s surface
      Low: farming, high: livestock grazing
    • Valleys
      Surface depressions bounded by mountains or hills
      Naturally slopes downward to lakes, streams, ocean
      V-shaped: river erosion
      U-shaped: Ice berg
    • Hills
      Rounded slopes, “baby mountains”
      Spread out in all other landforms
      Caused by surface movement, deep erosion
    • Slow Surface Changes
      Natural, slowly and gradually (over time)
      Erosion
      Surface materials changed by Wind/Water/Animals
      No large difference in appearance
    • Rapid Surface Changes
      All at once, not gradual
      Landslides, Volcanic Eruptions, and Earthquakes
      Major difference in appearance
      Forms new land, mountains, valleys
    • Landslides
      Mountains / Hills
      Starts at top and grows
      Soil moisture, angle of slope, construction
      Landslide Example
    • Volcanic Eruptions
      Many kinds of volcanoes (composite, shield, caldera)
      Opening in Earth’s crust, magma comes through
      “Paint drawing”
      Hawaiian Islands
      Volcanic Eruption in Hawaii
    • Earthquakes
      Caused by sudden movement of Earth’s crust
      Measured with a Seismometer (3-small, 7-serious damage)
      Earthquake description
    • Water Sources: Wells
      Structure drilled/dug under ground
      Comes from an aquifer (layer of water)
    • Springs
      Groundwater flows out of cracks in Earth’s surface
      Amount: size of area and human interaction
      Usually clear, sometimes colored by iron deposits
    • Lakes
      Freshwater surrounded by land
      Deeper than a pond, not part of the Ocean
      Great Lakes of Michigan
    • Rivers
      Narrow, freshwater, always flowing
      Flows toward lakes, oceans, or seas
      Longest river: The Nile (4,135 Mi)
    • Oceans
      All salt water
      70% of Earth’s surface
      Four main: Pacific, Atlantic, Indian, Arctic
    • Credits
      Woodley Wonderworks, “Blue Marble (Planet Earth)” Taken on January 26, 2008 Via Flickr, Creative Commons Attribution
      Daveynin, “Prairie dog eating grass” Taken on June 22, 2010 Via Flickr, Creative Commons Attribution
      Lee Coursey, “Mountain Goat on the Highline Trail” Taken on August 23, 2009 Via Flickr, Creative Commons Attribution
      Kiwins, “Humboldt Mountains, South Island, New Zealand” Taken on March 10, 2007 Via Flickr, Creative Commons Attribution
      Rob Young, “Rape Seed Growing on Salisbury Plain” Taken on April 28, 2008 Via Flickr, Creative Commons Attribution
      Andrew Crump, “Narrowneck Plateau” Taken on January 29, 2008 Via Flickr, Creative Commons Attribution
      Wolfgang Staudt, “BIG RED” Taken on July 20, 2006 Via Flickr, Creative Commons Attribution
      Alex Polezhaev, “Ak-Tru” Taken on May 10, 2009 Via Flickr, Creative Commons Attribution
      Kota Kinabalu, “The “Back” of Kokol Hill, Sabah” Taken on June 1, 2010 Via Flickr, Creative Commons Attribution
      KashifMardani, “Marvi Well” Taken on March 8, 2009 Via Flickr, Creative Commons Attribution
      Zecharia Judy, “Warm River Spring in TargheeFeathered” Taken on June 4, 2009 Via Flickr, Creative Commons Attribution
      NASA, “Great Lakes, No Clouds” Taken on August 28, 2010 Via Flickr, Creative Commons Attribution
      Nicholas, “River View” Taken on June 15, 2008 Via Flickr, Creative Commons Attribution
      Hamed Saber, “Welcoming Persian Gulf” Taken on November 7, 2007 Via Flickr, Creative Commons Attribution