Weathering and Erosion

Weathering and Erosion

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 1 Breaks down rock and changes the rock composition 2 The movement of rock

materials Erosion Rain or snow containing high concentration of acids The material that causes the Most amount or weathering Acid precipitation 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

8 Iron becoming rust Chemical weathering 9 Breaking down rock into smaller pieces Weathering The force(s) that causes erosion Wind, Water, Ice, Gravity

3 4 10 Chemical weathering Water Weatherin g Mechanical weathering Chemical weathering Physical weathering

Erosio n 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 Vocabulary Word The process of breaking rocks into smaller pieces. Weathering 1 Definition Vocabulary Word

Breaking down rock without changing the rock composition Mechanical weathering 2 3 Definition Rain or snow that contains high concentration of acids

Vocabulary Word Acid Precipitatio n Definition Vocabulary Word The movement of rock particles from one place to another Erosion 4

Definition Vocabulary Word Water freezing and expanding to break rock Ice wedging or Freeze-thaw 5 Definition

Vocabulary Word Breaking down rock by chemically changing the rock composition Chemical weathering 6 Definition Vocabulary Word

Iron becoming rust is an example of this type of weathering Chemical weathering 7 Definition Vocabulary Word The thing that causes the greatest amount of weathering and erosion

Water 8 Definition Vocabulary Word Acids produced by lichens to break down rock is an example of this type of weathering Chemical weathering

9 10 Definition The forces that can cause weathering and/or erosion Vocabulary Word Wind, Water, Ice, Gravity 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 M Chemical

Mechanic al Chemical Weathering or Mechanical Weathering Ice Wedging Chemical Weathering or

Mechanical Weathering Stalactites Stalagmites The rocks have changed to Stalagmites and Stalactites Chemical Weathering or Mechanical Weathering

Ice Wedging 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)

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