Texas Ecoregions: Week of 5/1


Review Weathering, Erosion and Deposition pg. 153:

  • Weathering breaks down rocks
    • Mechanical weathering: animals burrowing, plant roots, ice wedging, abrasion
    • Chemical weathering:  plant acids, carbonic acids, oxidation
  • Erosion moves the rock
  • Deposition drops or lays down the pieces in a new location, building up over time

TEK 7.8 B – Analyze the effects of weathering, erosion and deposition on the environment in ecoregions of Texas

  • Describe characteristics in ecoregions that effect WED:
    • More vegetation decrease erosion because plant roots anchor the soil down.
    • Altitude – erosion by wind, water (runoff) or gravity
    • Coastal – wave erosion
    • Desert – wind erosion and deposition
    • Rivers – weathering, erosion and deposition (deltas)
    • Climate affects WED – moist and hot promotes chemical weathering and dry/cold promotes mechanical weathering.

Go to the website below and read the information about each ecoregion. There is a video for each ecoregion. After watching the videos, the students will create a foldable


Directions for foldable:  10 Ecoregions of Texas

STEP ONE: Label foldable with each region.

STEP TWO: under the flap for each region list information: A major city, precipitation, topography (natural and physical features of the region), elevation, dangers in the region such has human impact, and 2 additional facts that you want to include. 

STEP THREE: Draw a picture of the region! Watch the video of each region to find a visual.