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Understanding Landforms: Weathering and Erosion Dynamics

This educational piece explores various landform processes, focusing on destructive and constructive actions shaping our landscape. It examines specific scenarios such as the heating and cracking of rocks, erosion caused by running water and wind, and the formation of deltas and sediment deposits. From the Colorado River carving the Grand Canyon to the effects of glaciers, each example illustrates the powerful interplay of natural forces. This resource aims to enhance understanding of how weathering, erosion, and deposition contribute to the evolution of our environment.

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Understanding Landforms: Weathering and Erosion Dynamics

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  1. Landform Activity for review

  2. #1 A rock heats in the sun and cracks DESTRUCTIVE WEATHERING

  3. #2 A slowing stream drops its load of sediments CONSTRUCTIVE DEPOSITION RUNNING WATER

  4. #3 Blown sand piles up along a line of trees CONSTRUCTIVE DEPOSITION WIND

  5. #4 Limestone at the Inner Space Caverns in central Texas is dissolved by water DESTRUCTIVE WEATHERING DISSOLVING

  6. #5 A Galveston beach shrinks DESTRUCTIVE EROSION WAVES

  7. #6 A deep hole forms at the base of a waterfall DESTRUCTIVE EROSION RUNNING WATER

  8. #7 Water seeps into a cracked brick, freezes, and breaks apart of the brick away DESTRUCTIVE WEATHERING

  9. #8 Blowing sand cuts a hole in a sandstone cliff DESTRUCTIVE EROSION WIND

  10. #9 The Colorado River flows through the Grand Canyon DESTRUCTIVE EROSION RUNNING WATER

  11. #10 A strong wind shifts the position of a sand dune DESTRUCTIVE EROSION WIND CONSTRUCTIVE DEPOSITION WIND

  12. #11 A town is covered in mud after a flooded river returns to its banks CONSTRUCTIVE DEPOSITION • RUNNING WATER

  13. #12 A moving glacier plows the ground as it slides down the valley DESTRUCTIVE EROSION GLACIER GRAVITY

  14. #13 A rock freezes and cracks DESTRUCTIVE WEATHERING

  15. #14 Roots grow into a cracked rock and make crack larger DESTRUCTIVE WEATHERING

  16. #15 Soil is blown from a west Texas field and lands in east Texas DESTRUCTIVE EROSION WIND CONSTRUCTIVE DEPOSITION

  17. #16 Water dissolves buried limestone DESTRUCTIVE WEATHERING DISSOLVING

  18. #17 A glacier leaves a trail of rock and soil along side as it slides down a valley CONSTRUCTIVE DEPOSITION GLACIER GRAVITY

  19. #18 Wind-blown sand smooths a boulder DESTRUCTIVE WEATHERING • WIND

  20. #19 The yard of a house on the beach becomes smaller and smaller DESTRUCTIVE EROSION WAVES

  21. #20 A delta forms at the mouth of the Mississippi CONSTRUCTIVE DEPOSITION RUNNING WATER

  22. #21 Water from a rainstorm washes loose soil from a flower bed onto the lawn DESTRUCTIVE EROSION RUNNING WATER CONSTRUCTIVE DEPOSITION

  23. #22 A river removes soil from the outside of a curve and leaves it on the inside of a curve as it rounds the corner DESTRUCTIVE EROSION RUNNING WATER CONSTRUCTIVE DEPOSITION

  24. #23 Rock tumbling downstream are broken into smaller pieces DESTRUCTIVE WEATHERING EROSION RUNNING WATER

  25. #24 Rock tumbling downstream are broken into smaller pieces DESTRUCTIVE WEATHERING EROSION RUNNING WATER

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