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Published byGerard Barker Modified over 9 years ago
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9.17 WARM UP What is the difference between weathering and erosion? Announcements: -Test Grades are in – you may check at home to see what your grade is – not right now -Quiz Fri: Identifying rocks/minerals; weathering types, erosion types & relative dating -Science Fair: Due Friday
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Test Results Written Test: – Range: 50%-100% – Avg: high 80’s – How many missed is on back page (ex: -4) – 35 questions total Skills Test: – Range 60-97 % – Avg: low 80’s – Added 1 pt due to confusing question – Score is on last page circled Both tests are each worth 100 pts (2 separate test scores)
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Learning Goal: Structure of the Earth 4 – I can give examples of places that have the FRAPA LOWCA 3 – I can explain what FRAPA LOWCA is 2 – I know some examples weathering and erosion 1 - I need to review W & E
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Changes to the Earth’s surface Weathering Breaks down rocks into smaller pieces 2 types – FRAPA – LOWCA Erosion Removes the rock particles WWGM
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Weathering Mechanical Weathering (FRAPA) – Freezing & Thawing – Release of pressure – Animal Actions – Plant Growth – Abrasion Chemical Weathering (LOWCA) – Living Organisms – Oxygen – Water – Carbon Dioxide – Acid Rain – Examples Examples Erosion F R A P A L O W C A
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Erosion moves rock particles Sediment = rock particles Deposition = when sediment is laid down/deposited from erosion Deposition LandformWeatheringSedimentErosionDeposition
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Erosion moves rock particles Sediment = rock particles Deposition = when sediment is laid down/deposited from erosion Examples: WWGM – “What would G-ma make?” – Wind – Water (runoff, rivers, waves) – Glaciers – Mass Movement (landslides, mudflows, slumps and creeps)
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Wind Erosion – wind carrying sediment
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wave erosion Water Erosion – waves, rivers, streams, waterfalls
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Glaciers glaciers
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Mass Movement Examples - gravity Mudslide Landslide Creeps & Slumps Avalanches US
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Landform Weathering SedimentErosionDeposition
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