Changes to the surface of the Earth… by dffhrtcv3

VIEWS: 1 PAGES: 29

									Changes to the
surface of the
   Earth….
                   Slow Vs. Fast
Fast Changes              Slow Changes
• Volcanic eruptions      • Erosion
• Earthquakes             • Weathering
• Mudslides               • Deposition
• Landslides
         Changes…..
Slow….        Fast….
Weathering…
---breaking
down of rock
into silt, sand
or clay…..
Erosion
----transporting
of the broken
down rock
caused by
weathering
Wind Erosion….
Wearing away by
the wind, can
form such
formations as
dunes….
ICE EROSION
Two types of
glaciers
       A. Valley- U-
shaped valleys, and
they are high in the
mountains.
       B.
Continental
glaciers cover large
areas of Earth
Water
Water and
Wind are both
agents of
erosion and
weathering.
      Which of the following is the
     breaking down of rock into silt,
             sand and clay?
                                25%          25%         25%          25%


1.   Erosion
2.   Weathering
3.   Deposition
4.   Landslide

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       Which of the following is the
     transporting of silt, sand or clay
          into a new location?
                                 25%          25%         25%    25%


1.   Erosion
2.   Weathering
3.   Deposition
4.   Delta




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Fast Changes!!!!
Hurricanes
Earthquakes….
            Review (Slow v. Fast)
Some changes are slow!   Some changes are fast!
  Which of the following would be
  considered a fast change to the
         Earth’s surface?
1. A tsunami taking                     25% 25% 25% 25%
   out a coastline
2. A river eroding soil
   along the shoreline
   and forming a delta
3. Wind carrying a
   sand in the dessert
   and making a dune.




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                 Landforms
• Glaciers or large sheets of ice form GLACIAL
  MORAINES – Cape Cod and Long Island are
  both GLACIAL MORAINES.
• Glacial moraines are formed as large pieces of
  ice push along the earth’s surface leaving
  behind large pieces of sediment. The large
  pieces of sediment form a landform known as
  the glacial moraine.
       Landforms continued…
• Dunes are formed from wind erosion. They
  are formed slowly over time.
            Landforms cont…
• Deltas are formed when water (rivers, streams
  or lakes) pick up sediment and deposit them
  into a new location. Over time, it creates a
  land mass known as a delta.
Mountain                  • Let’s look at a video…
Formation                 http://www.brainpop.com/sc
The earth is made up        ience/earthsystem/mounta
of plates. The The          ins/zoom.weml
plates are in constant
movement.
Sometimes plates
collide, energy is
released and new
landforms are
produced. Sometimes
plates pull apart and
allow magma to come
to the earth’s surface.
      Which of the following is made
     from river deposited sediments?
1.   Dune                 25%      25% 25%                 25%
2.   Delta
3.   Glacial Moraine
4.   Igloo



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    Fastest Responders (in seconds)
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    Which of the following is a
 landform that is made from wind
            erosion?
1.   Delta                25%     25% 25%                25%
2.   Dune
3.   Glacial Moraine
4.   Igloo




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    Fastest Responders (in seconds)
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Pangea
Theory that our world
consisted of one giant “SUPER
CONTINENT.”

Fossils provide evidence of
what organisms lived before
us…

What type of rock would I find
a fossil in and why?
            Igneous,
metamorphic, or
sedimentary?
        What have we learned?
• What are some slow changes?
• What are some fast changes?
• What is landform is made from water erosion?
• What is a sand dune? What type of erosion
  forms a dune?
• What is weathering?
ADVANCED…..
How would freezing and thawing affect the surface
  of the earth?
            Participant Scores
0   Participant 1
0   Participant 2
0   Participant 3
0   Participant 4
0   Participant 5

								
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