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1. What type of weathering caused the rock to break? Mechanical weathering Ice-wedging, freeze thaw 3. What type of weathering caused the rocks to break? Mechanical weathering Tree root getting bigger 2. What type of weathering caused the formation of the stalactites and the stalagmites? Chemical weathering Rock chemically changing 4. What is happening in the picture? 5. How can you prevent this? Mechanical weathering, Wind erosion Planting trees Definition Vocabulary Word Breaks down rock and changes the rock composition Chemical weathering 2 The movement of rock materials Erosion 3 Rain or snow containing high concentration of acids Acid precipitation 4 The material that causes the Most amount or weathering Water 5 Breaking down rock without changing the composition Mechanical/Physical weathering 6 Acids produced by lichens breaking down rock Chemical weathering 7 Water freezing and thawing to break rocks Ice wedging 1 Mechanical weathering Chemical weathering 8 Iron becoming rust 9 Breaking down rock into smaller pieces Weathering The force(s) that causes erosion Wind, Water, Ice, Gravity 10 Weathering Chemical weathering Physical weathering Erosion Acid precipitation Gravity Wind Water Ice Ice wedging Vocabulary Writing on mini white board I give the definition, you write the vocabulary word on the mini-board. Example Definition The process of breaking rocks into smaller pieces. Vocabulary Word Definition Breaking down rock without changing the rock composition Vocabulary Word Definition Rain or snow that contains high concentration of acids Vocabulary Word Definition The movement of rock particles from one place to another Vocabulary Word Definition Water freezing and expanding to break rock Vocabulary Word Definition Breaking down rock by chemically changing the rock composition Vocabulary Word Definition Iron becoming rust is an example of this type of weathering Vocabulary Word Definition The thing that causes the greatest amount of weathering and erosion Vocabulary Word Definition Acids produced by lichens to break down rock is an example of this type of weathering Vocabulary Word Definition The forces that can cause weathering and/or erosion Vocabulary Word Chemical Weathering or Mechanical Weathering Look at each picture and decide if it is an example or chemical weathering or mechanical weathering Use white board: And write Ch Chemical M Mechanical Chemical Weathering or Ice Wedging Mechanical Weathering Chemical Weathering or Mechanical Weathering Stalactites Stalagmites The rocks have changed to Stalagmites and Stalactites Chemical Weathering or Ice Wedging Mechanical Weathering Chemical Weathering or Mechanical Weathering The iron in the soil is rusting (changing) Chemical Weathering or Mechanical Weathering Tree roots expanding Chemical Weathering or Mechanical Weathering The iron nails are rusting (changing) Chemical Weathering or Mechanical Weathering “Dust Bowl” Wind weathering and erosion Chemical Weathering or Mechanical Weathering Brown area “Lichens” growing on the rock and changing the surface Chemical Weathering or Mechanical Weathering Both chemical and mechanical: Tree roots, water, acid, everything Chemical Weathering or Mechanical Weathering The metal is rusting (changing)
