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Earth Science BL. 1 Rate of Weathering

Earth Science BL. 1 Rate of Weathering. Isabella, Rebecca, and Danny. I. What is “rate of weathering”?. Rate of weathering is how fast or how slow a rock is weathered, chemically or physically. II. Factors that affect the rate of weathering. 1.Rock Composition-

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Earth Science BL. 1 Rate of Weathering

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  1. Earth Science BL. 1Rate of Weathering Isabella, Rebecca, and Danny

  2. I. What is “rate of weathering”? • Rate of weathering is how fast or how slow a rock is weathered, chemically or physically.

  3. II. Factors that affect the rate of weathering • 1.Rock Composition- The materials in a rock can have an affect on the rate of weathering. • Top: Granite • Bottom: Limestone

  4. II. Factors cont. • 2. Surface Area- The more surface area that is exposed, the faster the rate of weathering. • Above: crushed rock • Below: whole

  5. II. Factors cont. • 3. Climate- Temperature and moisture, or humidity, are huge factors in the rate of weathering.

  6. II. Factors cont. (Will this end?) • 4. Topography- Steep slopes= massive movements of rocks (thanks to gravity, of course) • Top: topographic map • Bottom: land slide

  7. II. Factors cont. (last one!) • 5. any others? Differential weathering- different types of weathering occurring in different parts of a rock Top: Chemical Bottom: Mechanical

  8. III. Examples • Hot and dry climate= very slow weathering • Hot and humid climate= very fast weathering

  9. III. Examples • Mid temp and moderate precipitation= fair amount of weathering

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