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.