Powerpoint pres part 1
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Transcript of Powerpoint pres part 1
Earth Science
Second Grade
Ariel Kaiserman
Landforms
MountainsPlainsPlateausValleysHills
Mountains
Tall, rough, pointyRocky mountains and
Appalachian mountainsAnimals: vultures, llamas,
mountain goats
Plains
Plains: vast, flat, no great changes
Uses: growing crops, raising animals
Animals: buffalo, prairie dogs, coyotes
PlateausElevated level land
surrounded by steep slopesAbout 45% of Earth’s
surfaceLow: 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
HillsRounded slopes, “baby
mountains”Spread out in all other
landformsCaused by surface movement,
deep erosion
Slow Surface Changes
Natural, slowly and gradually (over time)
ErosionSurface materials changed
by Wind/Water/AnimalsNo large difference in
appearance
Rapid Surface Changes
All at once, not gradualLandslides, Volcanic
Eruptions, and EarthquakesMajor difference in
appearanceForms new land, mountains,
valleys
Landslides
Mountains / HillsStarts at top and growsSoil moisture, angle of
slope, constructionLandslide Example
Volcanic EruptionsMany kinds of volcanoes
(composite, shield, caldera)Opening in Earth’s crust,
magma comes through“Paint drawing”Hawaiian IslandsVolcanic 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)
SpringsGroundwater
flows out of cracks in Earth’s surface
Amount: size of area and human interaction
Usually clear, sometimes colored by iron deposits
LakesFreshwater
surrounded by land
Deeper than a pond, not part of the Ocean
Great Lakes of Michigan
RiversNarrow, freshwater, always
flowingFlows toward lakes,
oceans, or seasLongest river: The Nile
(4,135 Mi)
OceansAll salt water70% of Earth’s surfaceFour 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 Kashif Mardani, “Marvi Well” Taken on March 8, 2009 Via Flickr, Creative Commons
Attribution Zecharia Judy, “Warm River Spring in Targhee Feathered” 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