Measuring Up Lesson 32

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					           Measuring Up Lesson 32
                 pps. 175-178
      Forces that change Earth’s Surface
                  Objective 4
  At the end of this lesson you will should understand
Earth’s surface features and resources by learning about
  the forces that shaped and continue to shape them.

5.6A: Identify events and describe changes that occur on a
regular basis.
5.11A: Identify and observe actions that require time for
changes to be measurable.
5.12A: Interpret how landforms are the result of a
combination of constructive and destructive forces such as
deposition of sediment and weathering.
           Vocabulary p. 175
• Landforms:
  – One of many different-shaped features found on the
    continents, such as a mountain, valley, or plateau
• Erosion:
  – The wearing away of rock or soil by wind, water, or
• Weathering:
  – A process that breaks down rocks
• Minerals:
  – Nonliving natural materials with a regular structure,
    including metals, metal ores, and some kinds of rock
Guided Questions pps. 175-176
• What are continents?
  – Landmasses
• What are three kinds of landforms?
  – Mountains, plateaus, and plains
• What occurs during weathering?
  – Wearing away of mountains
• What landforms are formed by erosion?
  – valleys and canyons
• Name a few minerals.
  – Metal and metal ores
        Short Answer p. 176
1. How do continental plates move?
  1. They float on a layer of “liquid: or molten
2. How can moving continental plates
   change Earth’s surface?
  2. They move apart to form valleys or move
     together to form mountains.
        Short Answer p. 176
3. How can erosion wear away and build up
   Earth’s surface?
  3. Wear away: Wind and rain can move rocks
     and soil.
     Build up: Rocks and soil can be deposited in
     other areas to form plains.
4. How is the building up of Earth and the
   wearing down of Earth related to different
   kinds of rock?
  4. When erosion moves bits of rock and
     deposit them somewhere else, they can turn
     into sedimentary rock.
      Apply the TEKS p. 177
1. What type of rock is granite? Explain.
  1. Granite is an igneous rock; it forms from
     slowly cooled magma.
2. Describe how shale is formed.
  2. Shale is formed from layers of clay and silt
     deposited over time.
3. How is obsidian formed, and what type of
   rock is it?
  3. Obsidian is formed as lava cools quickly
     after a volcanic eruption. Obsidian is an
     igneous rock.
       Apply the TEKS p. 177
4. Limestone and marble are both used in
   sculpturing. Limestone becomes marble under
   heat and pressure. Classify each rock, and tell
   which would be harder to sculpt.
  4. Limestone is a sedimentary rock, and marble is
     metamorphic. Ex: marble is harder to sculpt
     because it is metamorphic rock, which is harder due
     to the intense heat and pressure it underwent.
5. Explain how the minerals in a piece of granite
   become part of a sedimentary rock.
  2. Ex: The granite could be weathered and broken into
     small pieces. Some of the pieces. Some of these
     pieces could be eroded an then compacted to form
     sedimentary rock.
       TAKS Practice p. 178
• Link to TAKS Practice

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